HELICID A. 41 
Epiphragmophora, Strobel. Shell umbilicate, fusco-calcareous, 
peristome expanded nearly circular; asolid caleareous epiphragm. 
Jaw four-ribbed, crenate. 2sp. Argentine Republic. H. Cuyana, 
Strobel. 
ELurycampta, Albers, 1860. Shell perforate, orbicularly convex ; 
obliquely rugose-striate ; brownish red, often handed : whorls 44 as 
the last descending; aperture ovate ; peristome white -expanded- 
reflected, margins approaching. H. Bonplandi, Lam. 1 Sp: 
Cuba, Argentine Republic. 
Leptarionta, Crosseand Fischer. Intermediate between Arionta 
and Fruticicola ; shell colored as in the former, but thin and trans- 
lucent as in the latter. H. bicincta. Pfr. Mexico. 
Micrarionta, Ancey. Shell smaller, subangulate at the per- 
iphery ; lip thicker, its extremities approaching, and callously 
connected, impinging on the SSR so st H. facta, Newcomb. 
Sta. Barbara Isl., Cal. 
Arionta, Leach, 1820. Shell Her foritell, turbinately globose, 
thin ; whorls six, convex; peristome lipped ; columellar lip dilated 
near the umbilicus. H. arbustorum, Linn. (xev, 56). Europe. 
H. Californiensis, Lea (xev, 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. 
Campylexa, Beck, 1837. (Ilelicigona, Risso, 1826. Corneola, 
Moquin-Tandon, 1855. Cingulifera, Held, 1837.) Shell umbili- 
cated, planospiral, orbicularly depressed, more or less solid, 
glabrous or hirsute; 45-6 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. 100sp. Mostly Mediterranean region. 
Xerocampylexa, Kobelt, 1871. H. Carascalensis, Fer. 
Fruticocampylexa, Kobelt, 1871. H. Ravergiensis, Fer. 
Eucampylea, Pfeiffer, 1878. (Cingulifera, Held, 1837. Cor- 
neola, Held, 1837. Chilostoma, Moquin-Tandon, 1855.) Typical 
group. H. Pouzolzi, Payr. (xev, 54). 
Tacheocampylza, Pfeiffer, 1877. H. Raspailii, Payr. 
Elona, Adams, 1855. (Sterna, Albers, 1850.) Shell plan- 
orboid, flattened above, spire involute, apex immersed ; peristome 
labiate within. H. Quimperiana, Fer. 
Chilotrema, 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, ‘ov al; the reflected lip 
continuous, angular. C. lapicida, Linn. (xev, 5D). Europe. 
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