An Introduction to the study of zoology, illustrated by the crayfishD. Appleton, 1901 - 371 pagini |
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Pagina xii
... THORACIC STERNUM IN THE MALE AND FEMALE • 136 142 · · 144 TRANSVERSE SECTION OF ABDOMEN 99 " " " " 38 . CONNECTION BETWEEN THORAX AND " " ABDOMEN 151 · 86 39 . " 9 99 CEPHALOTHORACIC STERNA AND EN- DOPHRAGMAL SYSTEM • · 153 9 59 40 ...
... THORACIC STERNUM IN THE MALE AND FEMALE • 136 142 · · 144 TRANSVERSE SECTION OF ABDOMEN 99 " " " " 38 . CONNECTION BETWEEN THORAX AND " " ABDOMEN 151 · 86 39 . " 9 99 CEPHALOTHORACIC STERNA AND EN- DOPHRAGMAL SYSTEM • · 153 9 59 40 ...
Pagina 5
... former , 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.
... former , 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 21
... thoracic somite ; XVI . , sternum of the second abdominal somite . In the male , the 9th to the 14th and the 16th to the 19th appendages are removed on the animal's left side : in the female , the antenna ( with the exception of its ...
... thoracic somite ; XVI . , sternum of the second abdominal somite . In the male , the 9th to the 14th and the 16th to the 19th appendages are removed on the animal's left side : in the female , the antenna ( with the exception of its ...
Pagina 22
... thoracic limbs ; lays hold of anything to fix itself , or to assist in climbing , by the two chelate anterior pairs of these limbs , which are also employed in tearing the food seized by the forceps and conveying it to the mouth ; while ...
... thoracic limbs ; lays hold of anything to fix itself , or to assist in climbing , by the two chelate anterior pairs of these limbs , which are also employed in tearing the food seized by the forceps and conveying it to the mouth ; while ...
Pagina 23
... thoracic legs ; and hence , for distinction's sake , they are called outer foot- jaws , or external maxillipedes . If the head of a stout pin is pushed between these external maxillipedes , it will be found that it passes without any ...
... thoracic legs ; and hence , for distinction's sake , they are called outer foot- jaws , or external maxillipedes . If the head of a stout pin is pushed between these external maxillipedes , it will be found that it passes without any ...
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