142 THE NAUTILUS. 



Subgenus Planogyra Morse, 1864. 



345. PYRAMIDULA ASTERISCUS (Morse). Quebec, Ont. and Maine 

 (to Vancouver Island?). 



Genus HELICODISCUS Morse, 1864. 



346. HELICODISCUS LINEATUS (Say). Ontario and Quebec to 

 Florida, west to Rio Chama and White Oaks, New Mexico. 



347. HELICODISCUS FIMBRIATUS Wetherby. Tellico Plains, Tenn. 

 A variety is reported from Indian Territory. 



Subfamily Punctinse ( Vd Polyplacognaiha). 



Genus PUNCTUM Morse. 



348. PUNCTUM PYGM^UM (Drap.). Quebec, Manitoba and 

 northern States ; Texas; California, Vancouver Id. 



349. PUNCTUM RANDOLPHII (Dal!). Seattle, Washington. 



350. PUNCTUM CONSPECTUM (Bid.). Middle California to Van- 

 couver Id. and Sitka. 



350a. PUNCTUM CONSPECTUM PASADENA Pils. Pasadena, Cali- 

 fornia. 



351. PUNCTUM CLAPPI Pilsbry. Seattle and Tacoma, Washington ; 

 Salem, Oregon. 



352. PUNCTUM CALIFORNICUM Pilsbry. Fish Camp, Fresno Co. 

 Cal. 



Genus SPHYKADIUM ('harp. 



353. SPHYRADIUM EDENTULUM (Drap.). Ontario to Vancouver 

 Id. Vertigo simplex Old. A longer cylindrical form, alticola Inger- 

 soll, occurs in the Rocky Mts., Colorado, etc., and Mississippi valley 



Loess. 



(Superfami ly EL A SMO GNA THA .) 

 Family SUCCINEIDJE. 



Genus SUCCINEA Drap. 



(Amphibince.) 



(The species of this section are variable and extremely difficult to 

 define from the shells alone, and the soft anatomy is as yet practic- 

 ally unknown). 



354. SUCCINEA SALLEANA Pfr. New Orleans and Alexandria, 

 La. ; Gloucester, N. J. 



355. SUCCINEA EFFUSA "Shutt." Pfr. Florida. 



