An Introduction to the Study of Zoology, Illustrated by the CrayfishAppleton, 1906 - 371 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 44
Pagina 6
... lateral lobe of the tail - fin , or sixth abdominal appendage ; XV , the first ; and xx , the last abdominal somite . In this and in succeeding figures the numbers of the somites are given in Roman , those of the appendages in ordinary ...
... lateral lobe of the tail - fin , or sixth abdominal appendage ; XV , the first ; and xx , the last abdominal somite . In this and in succeeding figures the numbers of the somites are given in Roman , those of the appendages in ordinary ...
Pagina 18
... rostrum ; t , t ' , the two divisions of the telson ; 1 , eye - stalks ; 2 , antennules ; 3 , antennæ ; 20 , lateral lobes of tail - fin ; XV - XX , somites of the abdomen . is a firm and solid front part , covered by.
... rostrum ; t , t ' , the two divisions of the telson ; 1 , eye - stalks ; 2 , antennules ; 3 , antennæ ; 20 , lateral lobes of tail - fin ; XV - XX , somites of the abdomen . is a firm and solid front part , covered by.
Pagina 29
... lateral tooth of stomach ; m , mouth ; mg , mid - gut ; mt , median tooth ; ∞ , œsophagus ; pc , pro- cephalic process ; pg , posterior gastric muscle ; ps , pyloric portion of stomach ; r , annular ridge , marking the commencement of ...
... lateral tooth of stomach ; m , mouth ; mg , mid - gut ; mt , median tooth ; ∞ , œsophagus ; pc , pro- cephalic process ; pg , posterior gastric muscle ; ps , pyloric portion of stomach ; r , annular ridge , marking the commencement of ...
Pagina 51
... lateral boundaries , the strong mandibles project , one on each side ( fig 3 , B ; 4 ) ; their broad crushing surfaces , which are turned towards one another , are therefore completely external to the oral cavity . In front , the mouth ...
... lateral boundaries , the strong mandibles project , one on each side ( fig 3 , B ; 4 ) ; their broad crushing surfaces , which are turned towards one another , are therefore completely external to the oral cavity . In front , the mouth ...
Pagina 53
... lateral pouch ; It , lateral tooth , seen through the wall of the stomach in A ; mg , mid - gut ; mt , median tooth , seen through the wall of the stomach in A ; as , oesophagus ; p , pyloric ossicle ; pc , pterocardiac ossicle ; pp ...
... lateral pouch ; It , lateral tooth , seen through the wall of the stomach in A ; mg , mid - gut ; mt , median tooth , seen through the wall of the stomach in A ; as , oesophagus ; p , pyloric ossicle ; pc , pterocardiac ossicle ; pp ...
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