HYGROMIA. 271 



in essential points with recent European authorities, and seem to be 

 well-founded. 



Section Hygromia Risso, s. sir. 



Shell subconic, narrowly perforated, with convex-conic spire,- 

 keeled periphery and convex base ; horn-colored or brown, somewhat 

 translucent, with an opaque white peripheral girdle. Surface 

 smoothish, not hairy. Aperture oblique, lip expanded below, re- 

 flexed at columellar insertion, thickened within. Type H. einetella, 

 pi. 55, figs. 20, 21. 



Jaw arcuate, with many wide, flat riblets (pi. 70, fig. 39, H. cine- 

 tella). Genitalia (pi. 70, fig. 32 H. limbata), having the epiphallus 

 long, flagellum very small. Four mucus tubes on each side, and be- 

 low them one small dart sack containing a dart. Duct of sperma- 

 theca long. 



Species few, confined to southern-central Europe. 



H. einetella Dr., iii, 18j H. limbata Dr., iii, 189. 



? ranzani Orsini. /. sublimbata Bgt. 



/. fasciata Paul. /. odeca Bgt. 



/. chelydea West. /. hylonomia Bgt. 



H. tassyi Bgt. v. delomphala Anc. 



Section Monacha Fitzinger, 1833. 



Monacha FITZ., I. c., for incarnata only. Not Monachus Kaup, 

 1829 (Aves). Latonia WESTERLUND (in part), Fauna Palaarct. 

 Binnenconch., Helix, pp. 30, 68. Not Latonia Mey., 1843 (Repti- 

 lia), nor Latona Schum. 1817 (Moll.) nor of Strauss, 1817 (Crust.). 



Shell covered-perforate or narrowly umbilicated, depressed sub- 

 globose with 6-7 whorls, the last rounded or subangular ; surface 

 minutely scaly or hairy. Aperture oblique, widely sublunate, lip 

 expanded, well thickened within. Type H. incarnata Mull., pi. 55, 

 figs. 29, 30. 



Genitalia (pi. 70, fig. 34 H. incarnata) as in Hygromia s. str ; 

 penis as usual in the genus ; 4 or 5 mucus tubes on each side ; dart 

 sack single. 



This group is purely conventional, and is retained to contain a 

 series of species distributed by some authors in Eulota, Carthusiana 

 and Latonia. Part of the Fruticicolas have the same anatomical 

 features. See v. Ihering, Morphol. u. Syst. Helix, p. 449, and the 

 authorities there cited, for characters the soft parts. 



