An Introduction to the Study of Zoology, Illustrated by the CrayfishAppleton, 1906 - 371 pagini |
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Pagina xii
... ROSTRUM • 153 156 • • 157 A SEGMENT OF THE ENDOPHRAGMAL • SYSTEM LONGITUDINAL SECTION OF CEPHALO- 159 43 . " 99 " 9 THORAX . • • 162 44 . 99 99 " THE THIRD MAXILLIPEDE . · 164 FIG . 45. Astacus fluviatilis . THE FIRST AND SECOND xii ...
... ROSTRUM • 153 156 • • 157 A SEGMENT OF THE ENDOPHRAGMAL • SYSTEM LONGITUDINAL SECTION OF CEPHALO- 159 43 . " 99 " 9 THORAX . • • 162 44 . 99 99 " THE THIRD MAXILLIPEDE . · 164 FIG . 45. Astacus fluviatilis . THE FIRST AND SECOND xii ...
Pagina 6
... rostrum ; t , telson.- 1 , eye - stalk ; 2 , antennule ; 3 , antenna ; 9 , external maxillipede ; 10 , forceps ; 14 , last ambulatory leg ; 17 , third abdominal ap- pendage ; 20 , lateral lobe of the tail - fin , or sixth abdominal ...
... rostrum ; t , telson.- 1 , eye - stalk ; 2 , antennule ; 3 , antenna ; 9 , external maxillipede ; 10 , forceps ; 14 , last ambulatory leg ; 17 , third abdominal ap- pendage ; 20 , lateral lobe of the tail - fin , or sixth abdominal ...
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 26
... second maxillipede ; pbd . 13 , that of the third ambulatory leg : plb . 12 , plb . 13 , the two rudimentary pleurobranchiæ ; plb . 14 , the functional pleurobranchia ; r , rostrum . waistcoat , if we suppose the lining of the flaps.
... second maxillipede ; pbd . 13 , that of the third ambulatory leg : plb . 12 , plb . 13 , the two rudimentary pleurobranchiæ ; plb . 14 , the functional pleurobranchia ; r , rostrum . waistcoat , if we suppose the lining of the flaps.
Pagina 156
... rostrum ; t , tubercle . represented , in the thorax , by the thin inner walls of the branchial chamber ; the pleura , by the branchiostegites ; and the terga , by so much of the median region of the carapace as lies behind the cervical ...
... rostrum ; t , tubercle . represented , in the thorax , by the thin inner walls of the branchial chamber ; the pleura , by the branchiostegites ; and the terga , by so much of the median region of the carapace as lies behind the cervical ...
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