A manual of zoologyWilliam Blackwood & Sons, 1878 - Zoology |
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Page 103
... chitinous outer covering or envelope with which many of the Hydrozoa are furnished . These terms have also not uncommonly been applied to the very similar structures produced by the much more highly organised Sea - mats and their allies ...
... chitinous outer covering or envelope with which many of the Hydrozoa are furnished . These terms have also not uncommonly been applied to the very similar structures produced by the much more highly organised Sea - mats and their allies ...
Page 107
... chitinous envelope or " polypary ; " but in the other genera belonging to the order the polypary is either a Fig . 33. - Morphology of Corynida . a Fragment of Cordylophora lacustris , slightly enlarged ; 6 Fragment of the same ...
... chitinous envelope or " polypary ; " but in the other genera belonging to the order the polypary is either a Fig . 33. - Morphology of Corynida . a Fragment of Cordylophora lacustris , slightly enlarged ; 6 Fragment of the same ...
Page 111
... Chitinous investment ( periderm ) of the colony ; b Ectoderm ; e Endoderm ; pite ; Gonoblastidion , or columniform zoöid , carrying sporosacs ( s s ) with ova in their interior . ( Altered from Allman . ) duced upon certain special ...
... Chitinous investment ( periderm ) of the colony ; b Ectoderm ; e Endoderm ; pite ; Gonoblastidion , or columniform zoöid , carrying sporosacs ( s s ) with ova in their interior . ( Altered from Allman . ) duced upon certain special ...
Page 114
... chitinous receptacles - the so - called " gonotheca " or " gonangia . " The cœnosarc generally consists of a main stem --or " hydrocaulus " -with many branches ; and it is so plant- like in appearance that the common Sertularians are ...
... chitinous receptacles - the so - called " gonotheca " or " gonangia . " The cœnosarc generally consists of a main stem --or " hydrocaulus " -with many branches ; and it is so plant- like in appearance that the common Sertularians are ...
Page 115
... or ovarian vesicles ) are usually supported upon gonoblastidia , and do not become detached in the true Sertularids . They are developed in chitinous receptacles known as " gonothecæ (. CELENTERATA : SERTULARIDA . 115.
... or ovarian vesicles ) are usually supported upon gonoblastidia , and do not become detached in the true Sertularids . They are developed in chitinous receptacles known as " gonothecæ (. CELENTERATA : SERTULARIDA . 115.
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Other editions - View all
Manual of Zoology ...: With a General Introduction on the Principles of Zoology Henry Alleyne Nicholson No preview available - 2015 |
Common terms and phrases
abdomen adult alimentary canal ambulacral amongst animal Annelides antennæ anus aperture appendages Arachnida articulated attached birds bivalve body bones Brachiopoda branchiæ branchial calcareous carapace cavity cephalothorax chitinous ciliated composed comprising consists contractile Crustacea Ctenophora developed disc distinct division dorsal embryo Eocene external extinct extremity feet females fins fishes Foraminifera fossil furnished gemmation genera genus gills head horny Huxley Hydrozoa incisors Insects integument intestine known labium larva larvæ legs limbs living locomotive males Mammals mandibles margin maxillæ membrane molars Mollusca mouth nervous system operculum organs ovum Owen pairs Paleozoic parasitic placed plates polypide polypites Polyzoa portion possess posterior present regarded reproductive Reptiles resembling respiratory Rotifera rudimentary Scolecida segments shell side Silurian single skeleton sometimes somites species spines stomach structure sub-order surface tail teeth tentacles termed thorax toes transverse tube upper usually valves ventral Vertebrates vesicle whilst wings Zoantharia zooids