1910.] NATURAL SCIENCES OF PHILADELPHIA. 503 



Opeas pumilum (Pi'r.). O. goodalli Mill, not Fe"r. Las Cascades. 



Opeas panamense Pils., collected at Panama by Prof. C. B. Adams,. 

 was probably taken near the city of that name, where Adams col- 

 lected marine mollusks extensively. 



BULIMULID^]. 

 Bulimulus unicolor (Sowb.). Las Cascades. 

 Drymaeus semimaculatus Pils. Tabernillo. 

 DrymaRUS near josephus Ang. Tabernillo. 



Some other species of Drymceus are known from the islands in the- 

 bay of Panama. 



Oxystyla princeps (Brod.). Taberoillo. 



Auris distorta panamensis Pils. Between Tabernillo and San Pablo. 



OLEACINID^. 

 Euglandina cumingi (Beck). Tabernillo. 

 Euglandina probably striata (Mull.) Tabernillo. Fragments. 

 Salasiella browni Pils. Tabernillo ; Las Cascades. 



SUCCINEIDffi. 

 Succinea recisa Morel. (?). Las Cascades. 

 Also reported by other authors. 



ZONITTD^3. 

 Guppya gundlachi (Pfr.). Tabernillo. 

 Guppya browni Pils. Between Tabernillo and San Pablo. 

 Ammoniceras n. sp. near guildingi Bid. Tabernillo. 



Imperfect shells only. 



PUPILLID^J. 

 Bifidaria servilis (Old.). 



Some specimens of this species from the Morelet collection are in 

 the museum of the Academy from Panama, collected by Paz, under 

 the name "P. pazensis Perez." It is probably Pupa pazi Hidalgo 

 Journ. de Conchyl., 1875, p. 129. Von Martens reports P. pettucida 

 in which he includes servilis, from Panama, 



HELICINID^J. 



Helicina funcki Pfr. Tabernillo. 

 Helicina lirata Pfr. Tabernillo, abundant. 



