IIELIX §. 14. 29 



flexo. — Diam. maj. 14, min. 13, alt. Gy.j mill. Apert. 5 longa, 

 7 lata. (Mus. Benson.) 



HelLx pansa Bens. in Aiin. and Mag. N. H. 2 d. sor. XVIII. p. 252. 

 _ — Pfr. Novit. conch. I. n. 226. t. 36. f. H — 13. 

 Ilabitat Akj^ouktong prope ripas Irawadi fluminis Birmanorum 

 (W. Thcob^ld)! 



177. H. cumulus Pfr. 



T. perforata, turbinato-semiglobosa, tenuis, levissime stria- 

 lula, nitida, fulvo-cornca; spira convexo-conoidea, vertice sub- 

 tili vix prominulo; sutura levis, submarginata; anfr. Sy^ vix 

 convexiusculi, lentc accrescentes, ultimus non descendens, peri- 

 pheria subangulatus, basi parum convexus; apertura diagonalis, 

 lunaris; perist. simplex, rectum, marginibus distantibus, colu- 

 mellari leviter arcuato, superne subdilatato-reflexo. — Diam. 

 maj. 10, min. 9, alt. 5 mill. (Mus. Cuming.) 



Helix ciimiilus Pfr. in Proc. Zool. Soc. 1854. p. 145. 



— — Reeve Conch. ic. n. 136 8. t. 195. 



— — (Trochoraorpha) Pfr. Vers. p. 132. 

 p. Major; diam. maj. 17, min. 15, alt. 8^3 mill. 



Habitat «Manning-River» Australiae orientalis; var. ^ in insulis 

 Admiralitatis. 



178. H. Yorkensis Pfr. 



T. subobtecte perforata, turbinato-depressa, tenuis, capil- 

 laceo-striata , sericea , rubello-cornea ; spira convexiusculo- 

 conoidea, vertice subtili; sutura levis, simplex; anfr. 5 con- 

 vexiusculi, sensim accrescentes, ultimus non descendens, peri- 

 pheria subangulatus, basi nitidior, medio impressus; apertura 

 diagonalis, rotundato-lunaris , intus rubello-margaritacea; perist. 

 simplex, rectum, marginibus subconniventibus, columellari supra 

 perforationem calloso, dilatato. — Diam. maj. 10, min. Sy^, alt 

 5 mill. (Mus. Cuming.) 



Helix Yoi^kensis Pfr. in Proc. Zool. Soc. 1854. p. 143. 



— — Reeve Gonch. ic. n. 1372. t. 195. 



— — (Trochomorpha) Pfr. Vers. p. 132. 



Habitat «Cape York» Australiae septentrionalis. 



179. H. Ophelia Pfr. 



T. perforata, turbinato-depressa , tenuis, sub lente irre- 

 gulariter capillaceo-striata, haud nitida, diaphana, cornea, stri- 

 gis angustis rufulis notata; spira convexiusculo-conoidea, ver- 

 tice subtili, acutiusculo; anfr. o planiusculi, subexserti, sensiin 

 accrescentes, ultimus non descendens, subangulatus , basi pla- 



