An Introduction to the Study of Zoology, Illustrated by the CrayfishAppleton, 1906 - 371 pagini |
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Pagina 34
... extremity of one of the great claws is broken off , it will be found empty , the contained soft parts being retracted as far as the second joint . The soft membranous part of the exo- skeleton , which connects the hinder end of the ...
... extremity of one of the great claws is broken off , it will be found empty , the contained soft parts being retracted as far as the second joint . The soft membranous part of the exo- skeleton , which connects the hinder end of the ...
Pagina 39
... tory legs but two , that is , in the hinder of the two pair which are provided with chelate extremities ( fig . 3 , B ; od ) . After the female has received the deposit of the spermatic THE REPRODUCTION OF THE SPECIES . 39.
... tory legs but two , that is , in the hinder of the two pair which are provided with chelate extremities ( fig . 3 , B ; od ) . After the female has received the deposit of the spermatic THE REPRODUCTION OF THE SPECIES . 39.
Pagina 44
... extremities , but they play a less important part in fixing the young to the parent , and seem to be always capable of loosing their hold . I find the young of a Mexican crayfish ( Cambarus ) to be attached in the same manner as those ...
... extremities , but they play a less important part in fixing the young to the parent , and seem to be always capable of loosing their hold . I find the young of a Mexican crayfish ( Cambarus ) to be attached in the same manner as those ...
Pagina 55
... extremity is articulated with another larger bar ( c ) which runs upwards and backwards to the hinder or pyloric crosspiece , with which it articulates . Internally , this piece projects into the cardiac cavity of the stomach as a stout ...
... extremity is articulated with another larger bar ( c ) which runs upwards and backwards to the hinder or pyloric crosspiece , with which it articulates . Internally , this piece projects into the cardiac cavity of the stomach as a stout ...
Pagina 61
... extremity ( hg ) . Each of these ridges is beset with small papillæ , and the chitinous lining is continued over the whole to the vent , where it passes into the general cuticle of the integu- ment , just as the lining of the stomach is ...
... extremity ( hg ) . Each of these ridges is beset with small papillæ , and the chitinous lining is continued over the whole to the vent , where it passes into the general cuticle of the integu- ment , just as the lining of the stomach is ...
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