104 PULMONATA. 



Helix sagittifeia, Pfr. in Proc.Zool.Soc. 1842, p. 86 ; Mon. Helic. 

 i. 62; Ic. i. 197. 



Phil. Icon. i. 4. p. 77- t. 4. f. 1. 



(Nanina?) P/r. SymJ. ii. 20. 



Chemn. ed. 2, Helix, n. 163. t. 32. f. 10, 11. 



Desk. I. c. 159. n. 211. t. 99. f. 15-19. 



Reeve, n. 3. t. 1, and var. 

 Helix hepatica, Reeve, n. 9. t. 3. 

 Naniiia (Rvssota) sagittifera, Alb. 61. 

 Hab. Philippines. 



87. Nanina Borneensis. 



Shell obliquely perforate, depressed, rather thin, decussated by 

 distinct stria; of growth and numerous oblique impressed hnes, 

 dark fulvous ; spire scarcely raised, blunt ; suture bordered with 

 an impressed line ; whorls four, little convex, increasing rapidly, 

 the last one marked at the periphery with a blackish band, which 

 is dilute towards the centre ; more convex beneath and irregu- 

 larly radiated with chestnut streaks ; apertm-e oblique, large, 

 transversely lunate-oval, pearly within, with the band translu- 

 cent; peristome simple, sharp, with the columellar margin re- 

 flected into a short triangular lamina, which covers half the um- 

 bilicus. Height 25, greatest breadth 52, least breadth 42 mill, 

 (Pfr.) 

 Helix Borneensis, Pfr. in Proc. Zool. Soc. 1849, p. 12/ ; Mon. 



Suppl. 70. 

 Hab. Borneo. 



This species in shape, size and habitus gi-eatly resembles iV. 

 sagittifera ; but its sculpture is different, its spire less raised, 

 its whorls increasing rather slowly, and its aperture is larger 

 and more oval. 



88. Nanina ovum. B.M. 



Shell slightly perforated, globosely-depressed, obliquely striated 

 and irregularly wrinkled, slightly decussated with im])resscd hnes, 

 very close at the ajiex, remote and irregular on the last whorls, 

 obtusely keeled, entirely deep fulvous, or ornamented with a pale 

 band above the keel, and a purplish-black l)and beneath the 

 keel ; suture channeled ; whorls five, tumid above, tlie last ex- 

 cavated at the columella ; aperture lunate-elli])tical, inside bright, 

 milky ; peristome simple, thick, dextral margin archedly dilated. 

 Lat. maj. 115, min. 80, alt. 70 mill. 



