79 Ilotes on Certain Terrestrial Mollusls, 



of which it is the only known species. He remarks on its 

 rarity and the absence of mention of it in my Catalogue of 

 shells collected in New Grenada (Cont. to Conch., 1852). 



On a recent examination of shells, which my late valued 

 friend Mr. Kobert Swift had from me in 1852, still preserved 

 in his Cabinet, I identified a young specimen of Guesteria 

 Powisiana^ which I found in 1851 near Marmato, at an ele- 

 vation of about 5,000 feet, on the Western Cordillera of the 

 Andes. The shell had not been previously determined. 



Simp ulop sis dominicensis, Pfr. 



In the Swift Cabinet are two specimens, marked " Vitriiia,** 

 found by Hjalmarson near Puerto Plata (Haiti), but which 

 are I believe young shells of Simpulopsis dominicensis. 

 In Mai. Blatt. 1858, p. 146, Pfeiffer mentions a Vitrina from 

 Haiti, on the authority of Hjalmarson, which was subse- 

 quently found probably, to be what I have suggested. 



Helix bracteola, For. {Microphysa). 



M. Maz6 enumerates this in his Catalogue of Martinique 

 species (Jour. Conch. April, 1874) and I am indebted to M. 

 Crosse for a specimen of it. Looking at the description and 

 figure by Deshayes (in Per. Hist. I, p. 84, t. 86, f. 2), I do 

 not doubt the determination, but believe that the species is 

 the same as //. vortex, Pfr. 



Helix Sargenti, nov. sp. 



T. sub-perforata, globoso-cleprcssa, oblique striata, tenuis, pallida cor- 

 nea?; splra brevis, apice obtusa; anfr. 5, convexiusculi, ultimus antice 

 descendens, ad peripheriam obsolete angulatus, basi subplanulatus; aper- 

 tura obliqua, lunato-rotundata; perist. inarginibus approximatis, dcxtro 

 expansiusculo, columellari superne perdilatato, reflexo, perforationem 

 fere tegente, basali iiitrorsum lamellato-calloso. 



Shell subperforate, globose-depressed; obliquely striated, thin, pale 

 horn- colored ? ; spire short, apex obtus^ ; whorls 5, rather convex, the last 

 descending at the aperture, obsoletely angular at the periphery, base sub- 

 planulate ; aperture oblique, lunate-rounded; peristome with the margins 



