A History of Crustacea: Recent MalacostracaD. Appleton, 1893 - 466 pagini |
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Pagina 7
... eyes are mounted upon stalks or peduncles , which are almost invariably movable ; in the latter they are in continuity with the general surface of the head , or , if raised above it , the ocular prominences are unjointed and immovable ...
... eyes are mounted upon stalks or peduncles , which are almost invariably movable ; in the latter they are in continuity with the general surface of the head , or , if raised above it , the ocular prominences are unjointed and immovable ...
Pagina 34
... eyes pretty well cover the whole dorsal surface of the head . In the Brachyura and Macrura its original independence ... eye . No two parts of an animal could well be more unlike in appearance and func- OPTICAL INSTRUMENTS 35 tion . It ...
... eyes pretty well cover the whole dorsal surface of the head . In the Brachyura and Macrura its original independence ... eye . No two parts of an animal could well be more unlike in appearance and func- OPTICAL INSTRUMENTS 35 tion . It ...
Pagina 35
... eyes of the Podophthalma have really been developed upon appendages by nature equivalent to the rest of the series . Any one acquainted only with the extremely short - stalked eyes of some of the crabs might be excused for thinking this ...
... eyes of the Podophthalma have really been developed upon appendages by nature equivalent to the rest of the series . Any one acquainted only with the extremely short - stalked eyes of some of the crabs might be excused for thinking this ...
Pagina 36
... eyes ought to be regarded as limb - like sense organs . That besides being organs of touch , they are frequently organs of other senses , seems to be beyond doubt . In the Macrura at large the first joint contains an auditory apparatus ...
... eyes ought to be regarded as limb - like sense organs . That besides being organs of touch , they are frequently organs of other senses , seems to be beyond doubt . In the Macrura at large the first joint contains an auditory apparatus ...
Pagina 48
... eyes , nose , and mouth , to represent the lady in the chair . ' [ Herbst ] a crustacean , as exemplified in the crayfish , has been already discussed in detail by Professor Huxley in a pre- vious volume of this series . It may here ...
... eyes , nose , and mouth , to represent the lady in the chair . ' [ Herbst ] a crustacean , as exemplified in the crayfish , has been already discussed in detail by Professor Huxley in a pre- vious volume of this series . It may here ...
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Termeni și expresii frecvente
adult Amphipoda animal Anomura apex appendages basal joint Beddard belong Brachyura branchiæ branchial branchial cavity Budde-Lund burrow carapace character chelate chelipeds claws crab Crustacea Cumacea Dana depth described developed distinct distinguished dorsal epipod exopod eye-stalks eyes Fabricius fathoms female fifth joint fifth pair flagella flagellum fourth joint Fritz Müller front genera genus Giard and Bonnier gnathopods Haan Herbst inch inner branch Isopoda Kröyer larvæ larval last pair Latreille Leach limbs Linn Macrura Malacostraca male mandibles margin maxillæ Mediterranean Miers Milne-Edwards Mysis narrow outer branch pair of legs pair of trunk-legs pairs of pleopods palp parasitic peduncle peræon peræopods plates pleon pleopods regions Risso rostrum rudimentary S. I. Smith Sars second antennæ second joint second maxillipeds setæ short side sixth segment slender specimens Spence Bate spines Stimpson sub-order telson terminal joint third maxillipeds three pairs three-jointed tribe trunk two-jointed type species uropods ventral
Pasaje populare
Pagina 157 - I think this is as curious a case of instinct as ever I heard of, and likewise of adaptation in structure between two objects apparently so remote from each other in the scheme of nature, as a crab and a cocoa-nut tree.
Pagina i - Jelly-Fish, Star-Fish, and Sea-Urchins. Being a Research on Primitive Nervous Systems. By GJ Romanes.
Pagina i - WARNER, MD, Assistant Physician, and Lecturer on Botany to the London Hospital, etc. With 51 Illustrations. $1.75. 52. ANTHROPOID APES. By ROBERT HARTMANN, Professor in the University of Berlin. With 63 Illustrations. $1.75. New York : D. APPLETON & CO., 1, 3, & 5 Bon/l Street.