Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Томи 41 – 42The Society, 1902 |
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Сторінка 55
... plate ( Scheitelplatte ) ( Figs . 26 , 28 , 29 , 31 , 32 , 34 , 35 , 36 , 56 , 57 , 58 , CG ) , and in life bears a tuft of long cilia ( see Morse , '73 ) , though no trace of these is left in the material which I have examined . At the ...
... plate ( Scheitelplatte ) ( Figs . 26 , 28 , 29 , 31 , 32 , 34 , 35 , 36 , 56 , 57 , 58 , CG ) , and in life bears a tuft of long cilia ( see Morse , '73 ) , though no trace of these is left in the material which I have examined . At the ...
Сторінка 56
... plate and cerebral ganglion rather than the œsophagus . My obser- vation as to the location of the stomodæal invagination thus con- firms Heider's ( '93 ) theoretical suggestion and brings the brachiopod larva into close relationship ...
... plate and cerebral ganglion rather than the œsophagus . My obser- vation as to the location of the stomodæal invagination thus con- firms Heider's ( '93 ) theoretical suggestion and brings the brachiopod larva into close relationship ...
Сторінка 61
... plate as anterior and the suboesophageal sense plate as ventral in position , it follows that the peduncle is posterior and the mantle folds dorsal and ventral ; consequently even after the meta- morphosis the peduncle is posterior ...
... plate as anterior and the suboesophageal sense plate as ventral in position , it follows that the peduncle is posterior and the mantle folds dorsal and ventral ; consequently even after the meta- morphosis the peduncle is posterior ...
Сторінка 62
... plate ( Scher- telplatte ) , ganglion and sense organs , ( 13 ) œsophageal nerves and buccal ( ventral ) ganglion , ( 14 ) ventral ( and sometimes dorsal ) longitudinal nerves . IV . ( 15 ) Alimentary canal ( œsophagus , stomach and ...
... plate ( Scher- telplatte ) , ganglion and sense organs , ( 13 ) œsophageal nerves and buccal ( ventral ) ganglion , ( 14 ) ventral ( and sometimes dorsal ) longitudinal nerves . IV . ( 15 ) Alimentary canal ( œsophagus , stomach and ...
Сторінка 63
... plate and ganglion ( 12 ) and the ventral plate and ganglion ( 13 ) in Terebratulina ; only the beginnings of the œsophageal invagination are shown in the oldest larva which I have studied , but it is evident from its position that ...
... plate and ganglion ( 12 ) and the ventral plate and ganglion ( 13 ) in Terebratulina ; only the beginnings of the œsophageal invagination are shown in the oldest larva which I have studied , but it is evident from its position that ...
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Africa AMER AMERICAN PHILOSOPHICAL SOCIETY animals appear April Asia Australia auta autic beds belong blastopore body brachiopods Cambaroides Cambarus canals cells Central chromosomes cœlom connection contains crude oil Crustacea crystals curves Decapods deposits distillates distribution division domeykite drones eggs enteron Eocene equation evidence existence fact fauna Feb'y fertilization follicle formation forms fossils freshwater genera genus geographer geological Greater Antilles hydrocarbons islands Jan'y Jurassic land larva larvæ later Lower Cretaceous male mantle mass Mesozoic method Mexico Miocene nature Noctua North northern nuclei observed Ocean Oligocene origin parthenogenesis Pennsylvania petroleum Philadelphia PHILOS plate Pliocene polar body posterior Potamobius present probably PROC produced Prof queen region relation represented river sandstones separated shown solution South America southern species spermatocyte spermatogonia spermatozoa stage Terebratulina Tertiary theory tion Upper Cretaceous Zool