1914.] NATURAL SCIENCES OF PHILADELPHIA. 431 



SUCOINEID^. 

 Succinea barbadensis Guild. 



Cemetery, St. John's; INIarble Hill; also a Pleistocene fossil. 



Pupoides marginatus (Say). 

 Bifidaria servilis (Gld.). 



PUPILLID^. 



AURICULID^. 



PLANORBIDuE. 



Melampus coffea (L.). 

 Tralia pusilla (Gmel.). 



Planorbis guadalupensis Sowb. 



St. Philip. 



Planorbis lucidus Pfr. 



Antigua. 

 Planorbis cultratus Orb. 



Antigua. 

 Segmentina obstructa geoscopus n. subsp. PI. XIV, figs. 4, 5. 



The shell is olive-buff, very glossy, having fine growth-lines and 

 very faint spirals. Last whorl very deeply descending at the end, 

 bringing the aperture nearly to the horizontal plane. Teeth visible 

 in the mouth, one-fourth to one-third of a whorl from the aperture. 

 ]\Iajor parietal lamella sigmoid. Alt. 2.1, diam. 6.7 mm. 



Type and cotypes 109,160 A. N. S. P. 



PHYSID^. 



Pbysa rivalis (M. and R.). 



St. Philips. 



