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PLATYPHORA, n. gen.

Lata, planx, tota absque setis. Frons latissima. Thorax transversus. Abdomen parvus. Alarum vena cubitalis simplex, subacostali parallela; venula undulatæ ; costa ad basin subciliata.

Distinguished from all the existing genera of Phoridæ by its flat and broad shape, which resembles that of the small species of Sphærocera. The absence of strong bristles on the frons, thorax, and legs also distinguishes it from all the genera except Gymnophora, which, however, is of the usual arched Phora-shape, and has the cubital vein forked, costa bare, &c.

PLATYPHORA LUBBOCKII.—Nigra, nitida ; abdomino triangulari, segmento tertio parvo; femoribus posticis basi flavidis ; alis apice latis, flavido-hyalinis, costa ad basin subciliata, vena cubitali ad medium costæ extensa subcostali parallela, venulis undulatis. Long. lin.

Broad, flat, shining ; frons very broad, the eyes scarcely occupying each one-sixth the width of the head; it is moderately shining, gently arched, and pretty densely clothed with minute bristles; the three ocelli visible slightly luteous; antenne with the third joint rather large, somewhat rounded; thorax broad, flat, rather broader than the head, angles tolerably rounded, disk shining (in appearance suggesting a small Spherocera), beset with very minute bristles, which become rather scarcer towards the hinder part; scutellum rather dull, margined, nearly four times as broad as long: abdomen black, narrower and shorter than the thorax (again suggestive of Sphærocera); each segment after the second successively narrower, the last one being almost triangular; the third segment is very short, contracted under the second; the hind margins form a curved convex towards the thorax, the first segment being slightly emarginate in the middle; the sixth (last) is much the longest. Legs stoutish, blackish, basal twotbirds of hind femora yellowish; middle tibiæ with two small spines at the tip. Wings considerably overlapping the abdomen, yellowish hyaline, darker about the basal half of the costa, blunt at the tip, cubital vein extending about half the length of the wing, and the costa slightly ciliate up to its end, subcostal vein running parallel to it and ending just before it; both veins a little thickened at their ends; first veinlet curved S-like, considerably at its base, slightly at its end, vanishing distinctly before the tip of the wing; second veinlet also S-like, diverging at its end from the first, and ending distinctly below the tip of the wing; third veinlet slightly undulated, ending very wide from the second fourth faint, not reaching the end of the wing.

This description having been made from a specimen gummed down on card, though in very good condition, I am unable to decide on the sex, or to examine the face, palpi, base of antennæ, or coxæ.

INDEX.

APH

of, 10; different classes of indi.
viduals among, 18; communities
of, 24; games of, 28; their rela-
tion to plants, 50; often insecti-
vorous, 59; their relations to
other animals generally hostile,
63; their enemies, 26,67; their
domestic animals, 67-78; pro-
gress among, 90; their beha.
viour towards each other, 94,
&c.; mental powers of, 181 ;
their sense of vision, 11, 182–
220, 258; of smell, 127, 238,
258; of hearing, 221, 226; stri-
dulating apparatus among, 230;
their intelligence, 236
• Ant eggs,' 7
• Ant-rice,' 61
Antenna of ant described, 10;

ABD
A
BDOMEN of ant described, 10,

13; of the Mexican honey
ant, 19, 47
Acacia with hollow thorns in.

habited by ants, 57
Affection less powerful than

hatred among ants, 106; absence

of, among bees, 286
Agricultural ants, 61, 92
Aldrovandus quoted as to ants, 61
Amazon ants, see Polyergus ru-

fescens
Amber, an intermediate form of

ant preserved in, 68
Analogies between ant societies

and human, 91
André quoted as to Platyarthrus,

75; as to the slaves of F. san-

guinea, 80
Anergates, 85; no workers among

them, 86 ; degraded condition

of, 89
Animal food, queens hatched in

an artificial nest supplied with,
40
Ingræcum sesquipedale, length of

flowers of, 52
Inomma arcens, the Driver ant,
described, 20, 63; their blind.

ness, 65
Ants, three families of, 1; four

periods of life in, 6; duration of
life among, 8, 38, 40 ; structure

sense organ in terminal portion

of, illustrated, 227
Antennæ as means of communica-

tion among ants, 153; as organs
of hearing, 221, 226; of smell,

94, 234
Antirrhinum fertilised by humble

bees, 54
Aphides made use of by ants, 25,
67 ; different species of, utilised
by different ants, 68; their
honey, 69; their eggs tended by
ants, 70; not domesticated by
F. fusca, 91

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ARI
Aristida oligantha, 'ant-rice,' 61
Artificial nests for ants, 3, 164
Ateuchus pilularius, anecdote of,

154
Atrophy of the imaginal discs of

the ant-workers, 12; of the
sting in Formica, 15; of the
eyes of Platyarthrus and Beckia,

an

75

Atta barbara, the eye in, 11;

variety of workers among, 19
- structor, its treatment of col.

lected grain, 61
testaceo-pilosa, experiment with,

as to power of communication,

177
Attachment among ants, 94
Auditory organs, structures in ant-

antennæ probably serve as, 226
Australian honey ant, 49; de-

scribed, 428

CAR
Beetles kept in ants' nests, 74, 76,

90
Belt, Mr. Thomas, quoted as to

floral defences against ants, 51;
as to defence against leaf-cut-
ting ants, 57; on the raids of
Eciton, 66; on ant-like

spider, 66
Bert, Prof. Paul, as to the limits

of vision, 219
Bichromate of potash, experiments

with, 211
Bisulphide of carbon, experiments

with, 208;
Blanchard, M., quoted as to the

origin of nests, 30
Blindness of Anomma and Eciton,

65 ; of Platyarthrus and Beckia,

75
Blue, the favourite colour of bees,

294, 304, 310; flowers, their late

origin, 308
Bonnet, M., on aphis eggs, 70
Bonnier, M., on indifference to

colour among bees, 302
Bothriomyrmex meridionalis, the

eye in, 11
Brazil, blind hunting ants of, 65 ;

use made by the Indians in, of

the tenacity of an ant-bite, 96
Buchla dactyloides, seed of, col-

lected by ants, 61
Büchner, Dr., as to Texan harvest.

ing ants, 62
Burmeister, on the power of recog.

nition among insects, 126
Butterfly, ants seen licking the

larva of, 68

BATES

CAMPONOTUS inflatus, de-

ATES, Mr., quoted as to the
Saüba, 22; as to ant-play, 29;
as to the use made by ants of
leaves, 57; as to the armies of
Eciton, 65; as to leaf-cutting

by Saüba, 237
Batrisus, rarely more than one

specimen of, found in an ants'

nest, 78
Beckia, one of the ant-guests, 74
Bees, occasional fertility of

workers among, 36 ; means of
recognition among, 126; their
sense of hearing, 221, 290; ob-
servations with, 274 ; difficulty
in finding their way, 278; their
behaviour in a strange hive, 281;
their recklessness, 285; their
want of mutual affection, 286 ;
their influence on the develop-
ment of flowers, 51, 291 ; their
colour sense, 291 ; their prefer-
ence for blue, 294-310; experi-
ments on communication among
them, 276, 401

scribed, 428
ligniperdus, the eye in, 11 ;
communication among: 158
Captivity, mode of keeping ants

in, 2, 3; a wasp in, 315
Caterpillars killed by ants, 59, 65
Caryophyllaceæ, correlation of

form and colour in, 309

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