38 HELTCIDiB. 



carinate. 28 sp. Mediterranean region. H. JiHmargo, Ziegler 

 (xciv, 47). 



Xeroleuca^ Kolbelt, 18Y7. Shell peculiarly sculptured; without 

 markings. 4 sp. Northern Africa. H. Mograbina, Mor. 



ffelicopsis, Fitz., 1833. (Candidula, Kobelt, 1871.) 40 sp. 

 Mostly Europe and Syria. H. striata, Drap. 



Turricula, Beck, 1837. (^Obelus, Hartmann, 1840. Crenea 

 [pt.], Albers, 1850.) Shell conical, perforate or umbilicate, 

 usually costulate, last whorl more or less angulated at the 

 periphery. H. pyramidata^DrRp. {xc\'i,i^). 38 sp. S.Europe, 

 N. Africa, Syria, etc. 



Cochlicella, Risso, 1826. (Elisma, Leach, 1840. Longseva, 

 Muhlf.) Shell narrowly perforate, turreted -conical, white, 

 fasciate ; whorls 6-9, the last usually subangulate ; aperture 

 rounded-oval ; peristome simple, acute, the margins approaching. 

 H. acuta. Miill. 9 sp. Southern Europe, etc. 



OCHTHEPHILA, Bcck, 1837. Shell umbilicated or perforated, 

 trochiform or subdiscoidal, striate, ribbed or granulate ; whorls 

 4-8, the last carinated or angulated, deflected near the aper- 

 ture ; aperture circular or subcircular ; peristome continuous, 

 the extremities joined by a ridged callus, more or less thickened, 

 a little reflected. 2S sp. Canary Islands, Madeira. 



Hystricella, Lowe, 1854. Shell conuloid or trochiform. H. 

 hicarinata, Lowe (xcv, 50). Madeira. 



Geomitra, Swains., 1840. (Coronaria, Lowe, 1854.) Shell 

 mammillate. H. coronata, Desh. 



Heterostoma, Hartmann, 1844. (Spirorbula, Lowe, 1854.) 

 Shell planorbiform, H. paupercula, Lowe. 



Irus, Lowe, 1854. (Placentula, Pfr., 1855.) Shell turbinately 

 depressed. H. depauperata, Lowe. 



Placentula, Lowe, 1854. Shell discoidally depressed. H. 

 Maderensis, Wood. 



Actinella, Lowe, 1854. (Rimula, Lowe, 1854. Caseolus, 

 Lowe, 1854.) Shell narrowly umbilicated or subperfo rated, 

 globosely depressed ; the last whorl more or less carinated or 

 angulated, slightly deflected in front ; aperture oblique ; peris- 

 tome simple, plaited within; lip reflected at the base, its extrem- 

 ities more or less approaching and connected by a callus. 18 sp. 

 Madeira, H. compacta, Lowe. 



Tectula, Lowe, 1854. Shell umbilicate or narrowly perforate, 

 depressed pyramidal, scabrously granulate; last whorl carinate; 

 peristome simple, callously labiate within, the appi'oximating 

 margins joined by a thin callus. H. Bulweri, Wood. 3 sp. 

 Madeira. 



Craspedaria, Lowe, 1854. Shell with revolving ribs. H. del- 

 vhinula, Lowe. 2 sp. Madeira, 



