An Introduction to the Study of Zoology, Illustrated by the CrayfishAppleton, 1906 - 371 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 46
Pagina 23
... 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 difficulty into the interior of the body , through the mouth . In fact ...
... 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 difficulty into the interior of the body , through the mouth . In fact ...
Pagina 25
... outer foot - jaws , a large flap will be removed . This flap of the carapace is called the branchiostegite ( fig . 1 , bg ) , because it covers the gills or branchia ( fig . 4 ) , which are now exposed . They have the appear- ance of a ...
... outer foot - jaws , a large flap will be removed . This flap of the carapace is called the branchiostegite ( fig . 1 , bg ) , because it covers the gills or branchia ( fig . 4 ) , which are now exposed . They have the appear- ance of a ...
Pagina 33
... outer surface of the true integument . The cuticular skeleton of the crayfish , in fact , is not even so much a part of the skin as the cast of a snake , or as our own nails . For these are composed of coherent , formed parts of the ...
... outer surface of the true integument . The cuticular skeleton of the crayfish , in fact , is not even so much a part of the skin as the cast of a snake , or as our own nails . For these are composed of coherent , formed parts of the ...
Pagina 50
... outer wall of the body itself , to which the general name of integument may be given ; and the outermost layer of this , again , is the cuticle , which gives rise to the whole of the exoskeleton . This cuticle , as we have seen , is ...
... outer wall of the body itself , to which the general name of integument may be given ; and the outermost layer of this , again , is the cuticle , which gives rise to the whole of the exoskeleton . This cuticle , as we have seen , is ...
Pagina 53
... outer coat removed , seen from the left side ; B , the same viewed from the front , after removal of the anterior wall ; C , the ossicles of the gastric mill separated from one another ; D , the prepy- loric ossicle and median tooth ...
... outer coat removed , seen from the left side ; B , the same viewed from the front , after removal of the anterior wall ; C , the ossicles of the gastric mill separated from one another ; D , the prepy- loric ossicle and median tooth ...
Alte ediții - Afișează-le pe toate
An Introduction to the Study of Zoology, Illustrated by the Crayfish Thomas Henry Huxley Vizualizare completă - 1895 |
An Introduction to the Study of Zoology, Illustrated by the Crayfish Thomas Henry Huxley Vizualizare completă - 1902 |
Termeni și expresii frecvente
abdomen abdominal appendages abdominal somites ambulatory limbs Amurland animals antenna antennule aperture appears artery arthrobranchiæ Astacine Astacus fluviatilis Astacus torrentium attached basal joint blastomeres blood body branchiæ branchial cavity carapace cardiac cavity cephalothorax cervical groove chelate chitinous corpuscles coxopodite cray Crustacea cuticle cuticular division ecdysis Écrevisses edge endopodite English crayfish epiblast epipodite exopodite exoskeleton eye-stalk fact female filaments fluviatilis.-A forceps front ganglia ganglion gastrolith gills give rise green gland hind-gut hinder hypoblast Illustrations inner integument lateral leptodactylus less lobster longitudinal male mid-gut middle modified morphological muscle muscular nerve fibres nobilis noble crayfish nucleated cells nuclei organs ossicle outer pairs plate pleura podobranchiæ portion posterior prawns present region ridge rostrum segments septal lines setæ side somite species spermatozoa spines sternal sternum stomach structure substance surface swimmerets telson tergal tergum terminal thoracic thoracic limbs thoracic somite tissue transverse wall yelk zone