430 PROCEEDINGS OF THE ACADEMY OF [MaV, 



eastern portions, as at Hodge's Bay on the north shore and at St. 

 George's Church along the eastern shore, the probability is that the 

 species is extinct in this portion of the island, as all the woods have 

 been cut, thus destroying the natural cover. The northwestern por- 

 tion of the island is wooded in the vicinity of Wetherill's Bay, but 

 the woods are probably only of recent growth and no recent specimens 

 of this species were found there. In the southwestern portion, in 

 St. Mary's Parish, living specimens are. found mainly on the 

 "loblolly" trees {Pisonia suhcaudata) ; although the woods are suf- 

 ciently dense to afford moist conditions in many places. In the less 

 wooded (and hence arid) parts of St. Mary's the specimens are also 

 found living in the trees. In the region of Willoughby Bay, Parish 

 of St. Philip, the conditions are still more arid, and living specimens 

 were seen only on the trees. The "wild pines" {Bromeliacece) 

 seem to be the places where the living mollusks are most certainly 

 to be met with. These epiphytes, containing as they do in the 

 axils of their leaves the only water commonly to be found on these 

 dry hills, are evidently resorted to by the mollusks for their supply 

 of moisture; and it is the presence of these "wild pines" with their 

 constant supply of moisture that has tempted the P. formosa to 

 acquire an arboreal habit and pass from ground forms to a more 

 or less arboreal life. 



Thysanophora subaquila (Shuttl.). 



Wetherill's Bay. 



BULIMULID^. 



Bulimulus guadalupensis (Brug.). 



Wetherill's Bay; Marble Hill, 2 miles north of St. John's; Mont- 

 pelier, St. Philip. 



Drymaeus elongatus (Bolt.). 



St. George's Church. (Also Anguilla and Barbuda.) 



AOHATINID^. 

 Subulina octona (Brug.). 



Public Cemetery, St. John's; Wetherill's and Willoughby Bays; 

 Marble Hill. 

 Opeas micra (Orb.). 



Wetherill's Hill; Marble Hill. 

 Opeas gracile (Hiitt.). 



Marble Hill. 



Opeas beckianum (Pfr.). 



Antigua, special locality not noted. 



