An Introduction to the study of zoology, illustrated by the crayfishD. Appleton, 1901 - 371 pagini |
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Pagina xiii
... SOMITE , AND TELSON • COMPARATIVE VIEWS OF THE FIRST AND SECOND ABDOMINAL APPEN- • 233 nigrescens . DAGES OF THE MALE 245 " " 63. Cambarus Clarkii • 248 64. Parastacus brasiliensis . 250 99 65. Astacoides madagascarensis 251 66. DIAGRAM ...
... SOMITE , AND TELSON • COMPARATIVE VIEWS OF THE FIRST AND SECOND ABDOMINAL APPEN- • 233 nigrescens . DAGES OF THE MALE 245 " " 63. Cambarus Clarkii • 248 64. Parastacus brasiliensis . 250 99 65. Astacoides madagascarensis 251 66. DIAGRAM ...
Pagina 5
... , in almost all points ; but the gills and the abdominal appendages present differences ; and the last thoracic somite is united with the rest in the lobster . ( See Chap . V. ) general hue may be red or blue . These are.
... , in almost all points ; but the gills and the abdominal appendages present differences ; and the last thoracic somite is united with the rest in the lobster . ( See Chap . V. ) general hue may be red or blue . These are.
Pagina 6
... somite . In this and in succeeding figures the numbers of the somites are given in Roman , those of the appendages in ordinary numerals . The animals may be seen walking along the bottom of the shallow waters which they prefer , by ...
... somite . In this and in succeeding figures the numbers of the somites are given in Roman , those of the appendages in ordinary numerals . The animals may be seen walking along the bottom of the shallow waters which they prefer , by ...
Pagina 7
... somite . In this and in succeeding figures the numbers of the somites are given in Roman , those of the appendages in ordinary numerals . The animals may be seen walking along the bottom of the shallow waters which they prefer , by ...
... somite . In this and in succeeding figures the numbers of the somites are given in Roman , those of the appendages in ordinary numerals . The animals may be seen walking along the bottom of the shallow waters which they prefer , by ...
Pagina 7
... somite . In this and in succeeding figures the numbers of the somites are given in Roman , those of the appendages in ordinary numerals . The animals may be seen walking along the bottom of the shallow waters which they prefer , by ...
... somite . In this and in succeeding figures the numbers of the somites are given in Roman , those of the appendages in ordinary numerals . The animals may be seen walking along the bottom of the shallow waters which they prefer , by ...
Termeni și expresii frecvente
abdomen abdominal appendages abdominal somite acid alimentary ambulatory limbs animals antenna antennule aperture appears artery arthrobranchiæ Astacine attached basal joint base become blastomeres blood body branchiæ branchial cavity branchial chamber branchial filaments branchiostegite canal carapace cephalic cephalothorax cervical groove chitinous convex corpuscles coxopodite crayfish Crustacea cuticle cuticular division ecdysis ectoderm ectostracum edge endopodite endosternites epiblast epimeral epipodite exopodite exoskeleton external fact fibres food-yelk forceps front ganglion gastrolith gills gives rise green gland hind-gut hypoblast inner lamina lateral less lobes lobster longitudinal male mandibles maxillipede membrane metameres morphological muscles muscular Nauplius nerve nobilis nucleated cells nuclei organs outer ovum pairs plate pleura podobranchiæ portion posterior present procephalic protopodite region ridge rostrum scaphognathite segments seta setæ side somite species spines stem sternal sternum stomach structure substance surface telson tergal tergum terminal thoracic thoracic limbs thoracic somite tissue transverse wall yelk