A History of Crustacea: Recent MalacostracaD. Appleton, 1893 - 466 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 79
Pagina 38
... second antennæ , sometimes called simply the antennæ in distinc- tion from antennules . ' They are rarely absent , as in the females of some Amphipoda . More often they are strongly developed , in some instances exceeding in length all ...
... second antennæ , sometimes called simply the antennæ in distinc- tion from antennules . ' They are rarely absent , as in the females of some Amphipoda . More often they are strongly developed , in some instances exceeding in length all ...
Pagina 39
... second antennæ , and it is obviously unlikely that a sound - pro- ducing organ should have been developed in an animal's ear . 4. The fourth or mandibular segment is of great im- portance , since from this , or from it in conjunction ...
... second antennæ , and it is obviously unlikely that a sound - pro- ducing organ should have been developed in an animal's ear . 4. The fourth or mandibular segment is of great im- portance , since from this , or from it in conjunction ...
Pagina 50
... antennæ , a pair of mandibles , and two pairs of maxillæ . Of the next eight pairs of appendages , from one to three ... second antennæ and second maxillæ they may either have or be without an exopod on the second joint , and they may ...
... antennæ , a pair of mandibles , and two pairs of maxillæ . Of the next eight pairs of appendages , from one to three ... second antennæ and second maxillæ they may either have or be without an exopod on the second joint , and they may ...
Pagina 52
... second antennæ are placed outside of and a little behind the first . The hind margin ' of the carapace separates the trunk from the pleon , and lies between the first joints of the last pair of trunk - feet . Between it and the orbits ...
... second antennæ are placed outside of and a little behind the first . The hind margin ' of the carapace separates the trunk from the pleon , and lies between the first joints of the last pair of trunk - feet . Between it and the orbits ...
Pagina 55
... second antennæ are not greatly elongated . The seventh joint in the walking - legs is generally unarmed . It is either stiliform or in the last pair expanded into an ovate swimming organ . The species are marine or littoral The great ...
... second antennæ are not greatly elongated . The seventh joint in the walking - legs is generally unarmed . It is either stiliform or in the last pair expanded into an ovate swimming organ . The species are marine or littoral The great ...
Alte ediții - Afișează-le pe toate
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.