A History of Crustacea: Recent MalacostracaD. Appleton, 1893 - 466 pagini |
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Pagina xii
... pleon , and on the right by dorsal views of the female head and pleon . De Haan Lithodes histrix , de Haan . PLATE VI . To face p . 153 . A male specimen , with separate figures of the right chela and of the pleon , the latter shown in ...
... pleon , and on the right by dorsal views of the female head and pleon . De Haan Lithodes histrix , de Haan . PLATE VI . To face p . 153 . A male specimen , with separate figures of the right chela and of the pleon , the latter shown in ...
Pagina 45
... pleon or swimming - part , a convenient and often a very appropriate name , although on the other hand there are plenty of crustaceans which do not and cannot use the pleon to swim with . The first five of these segments frequently have ...
... pleon or swimming - part , a convenient and often a very appropriate name , although on the other hand there are plenty of crustaceans which do not and cannot use the pleon to swim with . The first five of these segments frequently have ...
Pagina 50
... pleon is composed of six seg- ments and a telson . The trunk is clearly distinguished from the pleon , but some part of it is always more or less closely united with the head . To every segment normally belongs a pair of jointed ...
... pleon is composed of six seg- ments and a telson . The trunk is clearly distinguished from the pleon , but some part of it is always more or less closely united with the head . To every segment normally belongs a pair of jointed ...
Pagina 52
... pleon is of sub- ordinate size , usually reflexed against the concavity of the plastron , in the male generally narrow and pointed , with only one or two pairs of pleopods , in the female broad , with four pairs of pleopods . The basal ...
... pleon is of sub- ordinate size , usually reflexed against the concavity of the plastron , in the male generally narrow and pointed , with only one or two pairs of pleopods , in the female broad , with four pairs of pleopods . The basal ...
Pagina 61
... pleon . After many months they attain the final Zoëa stage , in which the terminal segment of the pleon is very broad , and divided nearly to the base by a broad sinus , formed by long spiniform diverging processes , at the base of ...
... pleon . After many months they attain the final Zoëa stage , in which the terminal segment of the pleon is very broad , and divided nearly to the base by a broad sinus , formed by long spiniform diverging processes , at the base of ...
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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.