An Introduction to the Study of Zoology, Illustrated by the CrayfishAppleton, 1906 - 371 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 54
Pagina 16
... region in which it lives ; and these double names are rendered by Astacus fluviatilis , Astacus leptodactylus , and Astacus dauricus ; and thus we have a nomenclature which is exceedingly simple in principle , and free from confusion in ...
... region in which it lives ; and these double names are rendered by Astacus fluviatilis , Astacus leptodactylus , and Astacus dauricus ; and thus we have a nomenclature which is exceedingly simple in principle , and free from confusion in ...
Pagina 17
... lime that it becomes dense and hard . It will be observed that the body of the crayfish is naturally marked out into several distinct regions . There bcg cg 20 XV XV XVI XVI XVII XVII XVIII THE SKELETON EXTERNAL AND CALCIFIED . 17.
... lime that it becomes dense and hard . It will be observed that the body of the crayfish is naturally marked out into several distinct regions . There bcg cg 20 XV XV XVI XVI XVII XVII XVIII THE SKELETON EXTERNAL AND CALCIFIED . 17.
Pagina 19
... regions into which the body is divided in the higher animals , the fore part is termed the cepha- lo - thorax , or head ( cephalon ) and chest ( thorax ) com- bined , while the ... region of the head , in front , from THE EXOSKELETON . 19.
... regions into which the body is divided in the higher animals , the fore part is termed the cepha- lo - thorax , or head ( cephalon ) and chest ( thorax ) com- bined , while the ... region of the head , in front , from THE EXOSKELETON . 19.
Pagina 20
Thomas Henry Huxley. the region of the head , in front , from that of the thorax behind . The thorax seems at first not to be jointed at all ; but if its under , or what is better called its sternal , surface is examined carefully , it ...
Thomas Henry Huxley. the region of the head , in front , from that of the thorax behind . The thorax seems at first not to be jointed at all ; but if its under , or what is better called its sternal , surface is examined carefully , it ...
Pagina 24
... region coming away with the carapace . The reason of this is not far to seek . The lower edges of that part of the carapace which belongs to the thorax approach the bases of the legs pretty closely , but a cleft - like space is left ...
... region coming away with the carapace . The reason of this is not far to seek . The lower edges of that part of the carapace which belongs to the thorax approach the bases of the legs pretty closely , but a cleft - like space is left ...
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