An Introduction to the study of zoology, illustrated by the crayfishD. Appleton, 1901 - 371 pagini |
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Pagina vi
... face to face with all the great zoological questions which excite so lively an interest at the present day ; he will understand the method by which alone we can hope to attain to satisfactory answers of these questions ; and , finally ...
... face to face with all the great zoological questions which excite so lively an interest at the present day ; he will understand the method by which alone we can hope to attain to satisfactory answers of these questions ; and , finally ...
Pagina vi
... face to face with all the great zoological questions which excite so lively an interest at the present day ; he will understand the method by which alone we can hope to attain to satisfactory answers of these questions ; and , finally ...
... face to face with all the great zoological questions which excite so lively an interest at the present day ; he will understand the method by which alone we can hope to attain to satisfactory answers of these questions ; and , finally ...
Pagina 8
... face of the first two rings of the tail , which are turned forwards between the hinder legs , on the under side of the body ( fig . 3 , A ; 15 , 16 ) . In the female , there are mere soft filaments in the place of the first pair of ...
... face of the first two rings of the tail , which are turned forwards between the hinder legs , on the under side of the body ( fig . 3 , A ; 15 , 16 ) . In the female , there are mere soft filaments in the place of the first pair of ...
Pagina 51
... a spacious bag , the stomach , which occupies almost the whole cavity of the head . It is divided by a constriction into a large anterior chamber ( cs ) , into the under face of which the 1's opene . zuć a sa posterior chamber be from.
... a spacious bag , the stomach , which occupies almost the whole cavity of the head . It is divided by a constriction into a large anterior chamber ( cs ) , into the under face of which the 1's opene . zuć a sa posterior chamber be from.
Pagina 51
... a spacious bag , the stomach , which occupies almost the whole cavity of the head . It is divided by a constriction into a large anterior chamber ( cs ) , into the under face of which the zulas opera , zuć a su poster chamber 1 ,
... a spacious bag , the stomach , which occupies almost the whole cavity of the head . It is divided by a constriction into a large anterior chamber ( cs ) , into the under face of which the zulas opera , zuć a su poster chamber 1 ,
Termeni și expresii frecvente
abdominal appendages abdominal somite ambulatory limbs animals antenna antennule aperture appears artery arthrobranchiæ Astacina Astacine Astacus fluviatilis Astacus torrentium attached basal joint base blood body branchiæ branchial cavity branchial chamber branchial filaments branchiostegite canal carapace cavity cephalothorax cervical groove chelate chitinous convex corpuscles coxopodite Crustacea cuticle cuticular developed distinct division ecdysis edge endopodite endosternites English crayfish epiblast epimera epipodite exopodite exoskeleton external eye-stalks fact fibres forceps front gastrolith gastrula genus gills gives rise green gland hind-gut inner lamina latter leptodactylus less lobster male mandible maxillipede metameres modified morphological muscles Nauplius nerve nobilis noble crayfish nucleated cells organs outer ovum pairs Penæus plate pleura pleurobranchiæ podo podobranchiæ portion posterior Potamobiida prawns present procephalic protopodite region ridge rostrum scaphognathite seta setæ side somite species spines sternal sternum stomach structure substance surface telson tergal tergum terminal thoracic thoracic limbs thoracic somite tissue transverse wall