HELICID^. 41 



Epiph ragmophora^ Strobel. Shell umbilicate, fasco-calcareous, 

 peristome expanded , nearly circular ; a solid calcareous epiphragm. 

 Jaw four-ribbed, crenate. 2 sp. Argentine Republic. H. Guyana^ 

 Strobel. 



U urj/cavipta, Alhers, 1860. Shell perforate, orbicularly convex; 

 obliquely rugose-striate ; brownish red, often banded ; whorls 4^-5, 

 the last descending; aperture ovate; peristome white, expanded- 

 reflected, margins approaching. H. Bonplandi, Lam. Y sp. 

 Cuba, Argentine Republic. 



Lepfarionta, Crosse and Fischer. Intermediate between Arionta 

 and Frnticicola ; shell colored as in the former, but thin and trans- 

 lucent as in the latter. H. hicincta. Pfr. Mexico. 



Micrarionta^ Ancey. Shell smaller, subangulate at the per- 

 iphery ; lip thicker, its extremities approaching, and callously 

 connected, impinging on the umbilicus. H. facta^ Newcomb. 

 ■ Sta. Barbara Isl., Cal. 



Arionta, Leach, 1820. Shell perforated, turbinatel}^ globose, 

 thin; whorls six, convex; peristome lipped ; columellar lip dilated 

 near the umbilicus. H. arbustorum, Linn, (xcv, 56). Europe. 

 H. Calif or nienisis^ Lea (xcv, 57). California. Different as are 

 the habitats of these two groups of species, the shells are suffi- 

 ciently related to justify placing them together in a subgenus. 

 Curiously, they are geographically separated by the whole 

 United States east of the Rocky Mountains, which does not 

 contain a single species referable here. 



Gampylsea, Beck, 1837. (Helicigona, Risso, 1826. Corneola, 

 Moquin-Taudon, 1855. Cingulifera, Held, 1837.) Shell umbili- 

 cated, planospiral, orbicularly depressed, more or less solid, 

 glabrous or hirsute ; 4^-6 whorls, the last deflected near the 

 aperture; aperture oval or subcircular; peristome lipped, more 

 or less thickened, its extremities approaching and joined by a 

 callus ; columellar lip dilated, reflected at the base, very rarely 

 touching the umbilicus. 100 sp. Mostly Mediterranean region. 

 Xerocampylaea, Kobelt, 1871. H. Garascalensis, Fer. 

 Fruticocampylsea, Kobelt, 1871. H. Bavergiensif?, Fer. 

 Eucampylsea, Pfeiff'er, 1878. (Cingulifera, Held, 1837. Cor- 

 neola, Held, 1837. Chilostoma,Moquin-Tandon, 1855.) T3'pical 

 group. H. Pouzolzi, Pa}^'. (xcv, 54). 



Tacheocampylsea, Pfeiffer, 1877. H. JRaspailii, Payr. 

 Elona^ Adams, 1855. (^Sterna, Albers, 1850.) Shell plan-" 

 orboid, flattened above, spire involute, apex immersed ; peristome 

 labiate within. H. Quimperiana, Fer. 



C/u7o^rfc;?7ia, Leach, 1820. (Latomus, Fitz.,1833. Lenticula, 

 Held, 1837. Vortex, Moquin-Tandon, 1855.) Shell umbilicated. 

 lenticular, strongly carinated ; five whorls, the last deflected near 

 the aperture ; aperture basal, horizontal, oval ; the reflected lip 

 continuous, angular. C. lapicida, Linn, (xcv, 55). Europe. 



