VO i889. n ] PROCEEDINGS OF THE NATIONAL MUSEUM. 299 



Order PULMONATA. 

 Suborder BASOMMATOPHORA. 



Superfamily PETROPHILA. 



Family SIPHONAR1 ID M. 



Geuns SIPHONARIA Sowerby. 



Siphonaria ferruginea Reeve. 



This species, which reaches as far north as Vera Cruz, Mexico, was 

 obtained at the Abrolhos Islands, off Porto Allegre, Brazil. 



Suborder STYLOMMATOPHORA 

 Superfamily GEOPHILA. 



Family HELICID.E. 

 Genus HELIX Linne\ 

 Helix lactea Miiller. 



This well known South European species, being an article of diet with 

 the Italians, has been introduced into those parts of South America 

 where Italian emigration has been directed. At Montevideo it was col- 

 lected in great abundance, not differing from Mediterranean specimens, 

 except that the shells averaged somewhat darker in color, on the upper 

 portion, than the European specimens with which I was able to com- 

 pare them, 



Superorder STREPTONEURA. 



Order CTENOBRANCHIATA. 



Suborder ORTHODONTA. 



Superfamily TOXOGLOSSA. 



Family TEREBRID.F. 



Genus TEREBRA Lamarck. 



Section ACTS H. & A. Adams. 



Terebra (Acus) benthalis Dall, var. nodata Dall. 



Plate v, Fig. 9. 



Shell small, slender, polished, yellowish white, with a blunt, some- 

 what inflated nucleus, and thirteen (or more) somewhat flattened whorls ; 

 suture distinct, appressed, the presutural baud narrow, bounded in front 

 by a rather wide, shallow sulcus and ornamented by obscure rounded 

 pustules, from ten to fifteen on each whorl; immediately in front of the 



