THE NAUTILUS. 51 



Pachychilus corvinus (Morelet). A few specimens. 



Pachychilus hinkleyi Marshall. Many dead ones, but few 

 living. The water was too high to get the living in the swift 

 current. 



Pachychilus cinereus (Morelet). Only found in a creek. 

 Probably a peck of these shells were in an old pot saved to burn 

 for lime by Indians. These shells were all more or less muti- 

 lated in preparing them to cook. 



Physa sp. Two fine specimens taken in a drainage ditch in 

 the Cacao orchard. They have a colored band at different 

 stages of growth as in P. gyrina, the transverse striae are irreg- 

 ular, the fine revolving striae are not as distinct as in P. gyrina. 



Psoronaias kuxensis Frierson. A small stream at Chama, in 

 sheltered places among the rocks on the bed of the stream, 

 many eroded. 



Euglandina decussata (Desh.). 



Euglandina monilifera (Pfr. ). Bluff on the mountain north 

 of Chama. 



Streptostyla delibuta (Morelet). Bluff. 



Streptostyla lattrei (Pfr. ). Bluff. 



Streptostyla sargi Crosse & Fischer. Bluff. 



Streptostyla sololensis C. & F. Bluff. 



Streptostyla turgidula producta PiJsbry. Bluff. 



Salasiella sp. Somewhat like S. hinkleyi, but the second 

 whorl is much longer; one dead specimen from the bluff. 



Salasiella sp. ' ' Cannot refer to any known species ' ' from 

 the bluff. 



Ammoniceras stolli (Martens). Three immature specimens in 

 a clearing back of the plantation buildings. 



Zonitoides minusculus (Binney). River drift. 



Zonitoides elegantula (Pfr.). River drift. 



Pseudohyalina puncticipitis Pilsbry. River drift. 



Guppya elegantula Pilsbry. River drift. 



Guppya gundlachti (Pfr.). River drift. 



Lysinoe ghiesbreghti (Pfr.). From the bluff, one very young 

 example. 



Drymaeus sulphureus (Pfr.). Bones. 



Coelocentrum fistidare (Pfr.). Variety from the bluff north of 

 Chama. 



