An Introduction to the study of zoology, illustrated by the crayfishD. Appleton, 1901 - 371 pagini |
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Pagina 38
... cuticle . Beneath this , after a time , a sort of bud grows out from the centre of the surface of the stump , and gradually takes on the form of as much of the limb as has been removed . At the next ecdysis , the covering cuticle is ...
... cuticle . Beneath this , after a time , a sort of bud grows out from the centre of the surface of the stump , and gradually takes on the form of as much of the limb as has been removed . At the next ecdysis , the covering cuticle is ...
Pagina 50
... cuticle , which gives rise to the whole of the exoskeleton . This cuticle , as we have seen , is extensively impregnated with lime salts ; and , moreover , in consequence of its containing chitin , it is often spoken of as the chitinous ...
... cuticle , which gives rise to the whole of the exoskeleton . This cuticle , as we have seen , is extensively impregnated with lime salts ; and , moreover , in consequence of its containing chitin , it is often spoken of as the chitinous ...
Pagina 52
... cuticle which forms the outermost layer of the integument is thus , as it were , turned in , to constitute the ... cuticle of the integument is calcified to form the hard parts of the exoskeleton , so is the cuticle of the stomach ...
... cuticle which forms the outermost layer of the integument is thus , as it were , turned in , to constitute the ... cuticle of the integument is calcified to form the hard parts of the exoskeleton , so is the cuticle of the stomach ...
Pagina 55
... cuticle , which gives rise to the whole of the exoskeleton . This cuticle , as we have seen , is extensively impregnated with lime salts ; and , moreover , in consequence of its containing chitin , it is often spoken of as the chitinous ...
... cuticle , which gives rise to the whole of the exoskeleton . This cuticle , as we have seen , is extensively impregnated with lime salts ; and , moreover , in consequence of its containing chitin , it is often spoken of as the chitinous ...
Pagina 55
... cuticle which forms the outermost layer of the integument is thus , as it were , turned in , to constitute the ... cuticle of the integument is calcified to form the hard parts of the exoskeleton , so is the cuticle of the stomach ...
... cuticle which forms the outermost layer of the integument is thus , as it were , turned in , to constitute the ... cuticle of the integument is calcified to form the hard parts of the exoskeleton , so is the cuticle of the stomach ...
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