A History of Crustacea: Recent MalacostracaD. Appleton, 1893 - 466 pagini |
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Pagina 38
... base into two branches . In the Squillidæ , also , there are three flagella . 3. The third segment carries the outer , under , or second antennæ , sometimes called simply the antennæ in distinc- tion from antennules . ' They are rarely ...
... base into two branches . In the Squillidæ , also , there are three flagella . 3. The third segment carries the outer , under , or second antennæ , sometimes called simply the antennæ in distinc- tion from antennules . ' They are rarely ...
Pagina 39
... base of the antennæ now under discussion , and in some of the Brachyura he and his colleague Audouin had investigated an inner apparatus capable of increasing the tension of the disk at the will of the animal , an arrangement which he ...
... base of the antennæ now under discussion , and in some of the Brachyura he and his colleague Audouin had investigated an inner apparatus capable of increasing the tension of the disk at the will of the animal , an arrangement which he ...
Pagina 61
... base by a broad sinus , formed by long spiniform diverging processes , at the base of which the sinus is armed with six to eight spines on each side . Shortly before the change into the second or Megalopa form , they were not quite so ...
... base by a broad sinus , formed by long spiniform diverging processes , at the base of which the sinus is armed with six to eight spines on each side . Shortly before the change into the second or Megalopa form , they were not quite so ...
Pagina 88
... base does not occupy the whole width of the sternum between the walking legs . But the most striking feature is the disproportionate size which in the male is attained by either the right or the left cheliped . According to de Haan his ...
... base does not occupy the whole width of the sternum between the walking legs . But the most striking feature is the disproportionate size which in the male is attained by either the right or the left cheliped . According to de Haan his ...
Pagina 93
... base usually covers the whole width of the sternum between the last pair of legs . The species are almost always littoral or shallow - water forms , with a rare exception in deep water . In this family there are about twenty - four ...
... base usually covers the whole width of the sternum between the last pair of legs . The species are almost always littoral or shallow - water forms , with a rare exception in deep water . In this family there are about twenty - four ...
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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.