SECTION B.] NORTH AMERICAN CONCHOLOGY. 



499 



[Contributions to Conchology.] 



Page. 



90 Description of supposed new species of Land Shells which inhabit 

 Jamaica : by Prof. C. B. Adams. 



90 Cyclostoma virgineum ..4c?. 



90 anomalum Ad. 



91 nodulosum Ad. 



91 retrorsum Ad. 



92 Shepardianum Ad. 



92 papyraceum Ad. 



93 Griffithianum Ad. 

 93 granosum Ad. 



93 Helicina dubiosa Ad. 



94 var. intermedia Ad. 

 94 Geomelania fortis Ad. 



94 magna Ad. 



95 procera Ad. 

 95 gracilis Ad. 



95 typica Ad. 



96 var. pygmaea Ad. 

 9o affinis Ad. 



No. 7. 

 April, 1SJ0. 



100 Descriptions of supposed new species 

 Jamaica : by Prof. C. B. Adams. 



Page. 

 96 Geomelania media Ad. 

 96 vicina Ad. 

 96 striosa Ad. 



96 costulosa Ad. 



97 conica Ad. 

 97 pauperata Ad. 



97 exilis Ad. 



98 Cylindrella costulosa Ad. 

 98 Helix sulphurea Ad. 

 98 Dolium perdix Ad. 

 98 Helix picturata Ad. 



II. sinuata Born. 

 si7iuosa Gmel. 

 100 picturata Ad. 

 100 sinuata Deless. 



II. picturata Ad. 



of Land Shells which inhabit 



101 Helicina ampliata Ad. 

 101 pusilla Ad. 



101 Cylindrella humilis Ad. 



102 pusilla Ad. 



102 pupaeformis Ad. 

 102 procera Ad. 



102 Achatina costulosa Ad. 



103 nitida Ad. 

 103 Gayana Ad. 



103 similis Ad. 



104 tenera Ad. 

 104 longispira Ad. 

 104 gracilior Ad. 



104 Achatina oscuians Ad. 



105 Helix connectens Ad. 

 105 alligans Ad. 



105 amabilis Ad. 



106 fuscolabris Ad. 



106 nobilis Ad. 



107 Redfieldiana 4d. 

 107 Blandiana Ad. 



107 oscuians Ad. 



108 Proserpina pisum Ad. * 

 108 Helix ingens Ad. 



108 Cyclostoma Sauliae Soivb. 

 108 suturale Sowb. 



109 Descriptions of supposed new species of Marine Shells which 

 habit Jamaica: by Prof. C. B. Adams. 



109 Narica (?) anomala Ad. 



109 Odostomia gemmulosa Ad. 



109 canaliculata Ad. 



109 ovuloides Ad. 



110 Odostomia solidula Ad. 



110 Eulima gracilis Ad. 



110 arcuata Ad. 



110 conica Ad. 



