196 HELIX-SOLAROPSIS. 



Solaropsis rugifera DOHRN, Jahrb. d. deutsch. Mai. Gesell 1882, 

 p. 100. 



I possess, unfortunately, only a single specimen of this species, not 

 fully adult, which I received years ago with other species from 

 Eastern Peru. On account of the sculpture, which differs remarkably 

 from that of all allied forms, I have decided to give an (admittedly) 

 incomplete description, in the hope that some one may be able to 

 complete it. H. selenostoma Pfr., which is the nearest species in 

 contour, is more narrowly convoluted, proportionally higher, and 

 more narrowly umbilicated. (Dohrn.*) 



H. ELAPS Dohrn. Unfigured. 



Narrowly umbilicated, depressed-globose, thin, striatulate and all 

 over minutely granulate, fulvous-corneous, ornamented with several 

 narrow interrupted bands ; spire very obtuse, depressed-globose ; sut- 

 ure profound ; whorls 5, convex, rapidly increasing, the last rounded, 

 compressed around the perforation, descending in front ; aperture a 

 little oblique, rounded-lunar ; peristome thin, expanded a little, 

 margins distant, the columella dilated. (Dohrn.') 



Alt. 10 J, diam. maj. 15 , min. 14 mill. 



On .the Tapajos River, Province of Para. 



Solaropsis elaps DOHRN, Jahrb. d. deutsch. Mai. Gesell. 1882, p. 

 102. 



Separated from all other species by its globular form. 



