138 PULMONATA. 



short, acute, white tooth ; aperture depressed, hatchet-shaped ; 

 peristome simple, acute. Lat. maj. 8, min. Ji, alt. 4 mill. 



Hehx insculpta, Pfr. Proc. Zool Soc. 1845, p. 129 ; Mon. Helic. 

 i. 36 ; Ic. i. 243. 



Chemn. ed. 2, Helix, n. 219. t. 30. f. 15-18. 

 Helix (Trochomorpha) insculpta, Alb. 116. 

 Hub. ? 



177. Nanina cryptoportica. 



Shell small, orbicular-depressed ; apex pointed, thin, pellucid, 

 bright, yellowish-green, faintly striated, rounded beneath, im- 

 perforate, with a small central pit ; whorls five and a half, sUghtly 

 convex, the last keeled ; suture impressed, mai-gined ; apertm-e 

 lunate ; lip simple ; columella strongly twisted above, forming a 

 narrow, central sinus. 



Helix crvptoportica, Gould, Proc. Bast. Soc. 1846, p. 171 ; Ex- 

 ped. Shells, 1851, p. 44. f. 72. 

 Pfr. Mon. Helic. i. 39. 

 Hab. ? 



178. Nanina Ammonia. 



Shell reversed, nearly globular, longitudinally folded, thin, 

 fragile, pellucid, green ; spire short, acuminate ; whorls four, nar- 

 row, convex, the last one the largest, dilated, convex and per- 

 forate beneath ; apertiu-e large, oval-rounded, oblique ; peristome 

 thin, sharp, dilated at the base. Height 18, breadth 20 mill. 

 {Desk.) 



Helix Ammonia, Valenc. in Mus. Paris. 



Desk, in Fer. Hist. i. 197. n. 265. t. 37 A. f. 1. 

 Pfr. Mon. Suppl. 41. 



Locahty unknown. 



179. Nanina rubicunda. 



Shell perforated, depressedly tiu-binated, nigosely striated, ob- 

 soletely and very minutely granulated, reddish under the deci- 

 duous homy epidermis ; whorls five and a half, subplanulate, 

 the last obsoletely angulatcd in the middle, more convex beneath ; 

 aperture obliquely lunar ; peristome simple, straight, dextral 

 margin dilated in front, coluniellar dilated, reflected, half-hiding 

 the perforation. Lat. maj. 27, min. 21, alt. 15 mill. 



Hehx rubicunda, Pfr. in Proc. Zool. Soc. 1845, p. 72; Mon. 



Helic. i. 47. 

 Hub. ? 



