46 THE NAUTILUS. 



5. TRUNCATELLA BILABIATA Pt'r. Key West, Key Largo, Bis- 

 cayne Bay, Micco, Indian River, Furguson's Pass, Marco, Cedar 

 Keys, Fla. Also Bermuda, Cuba, etc. 



6. TRUNCATELLA STIMPSONI Stearns. False Bay, near San 

 Diego, California. 



7. TRUNCATELLA CALIFORNICA Pfr. San Diego, California. 



[Note. T. subcylindrica " Gray " has been reported from Flor- 

 ida. The identity of the species is doubtful, and the occurrence in 

 Florida of the form so-called by Pfeiifer, equally so]. 



Suborder Rhipidoglossa. 

 Family HELICINIDJE. 



Genus HELICINA Lamarck, 1801. 



8. HELICINA CHRYSOCHEILA Binney. Texas, near mouth of the 

 Rio Grande. Also State of Tamaulipas, Mexico. 



9. HELICINA ORBICULATA Say. St. Simon's I., Ga., Chattanooga, 

 Tenii., Eureka Springs, Ark., Stone Co., Mo., southward to southern 

 Florida, and southwest to the Rio Grande ; type locality near mouth 

 of the St. John's River, Florida. [H. Hanleyana Pfr. is a syno- 

 nym]. 



9a. HELICINA ORBICULATA TROPICA ' Jan ' Pfr. Texas, mainly 

 south and southwest. An ill defined race. 



10. HELICINA OCCULTA Say. Western Pa. to Minn., south to Teiin. 

 Distribution markedly discontinuous and local. Allegheny Co., 

 Pa. ; Athens, 111. ; near Iowa City and Eldora, Iowa ; "NVinona, 

 Minn. ; Sheboygan, TVhitefish Bay near Milwaukee, and near Du 

 Pere, Wis. ; Lexington and at Natural Bridge. Va. ; Harriman and 

 South Pittsburg, Tenn. An abundant fossil of the Post-Pliocene 

 Loess formation in eastern and central Iowa, the adjacent parts of 

 111., western la. and E. Neb. ; also fossil at New Harmony, Ind., 

 the type locality. 



[Note. H. subglobulosa Poey, a Cuban species introduced into 

 United States works on the evidence of specimens found at Key 

 Biscayne and Fort Dallas, Fla., many years ago, has not yet been 

 shown to be actually living in Florida]. 



Subclass EUTHYNEURA. 



Order PULMONATA. 

 Suborder Siylommatophora. 



