PULMONATA. 101 



margin short, ai-ched, a little reflected above. Height 5, greatest 

 breadth 9, least breadth 7 mill. {Pfr.) 



IleUx gemma, Pfr. in Proc. Zool. Soc. 1848, p. 109; Z.f. M. 

 1848, p. 90 ; Ic. n. 762. t. 122. f. 19, 20 ; Mon. Suppl. 49. 

 Reeve, n. 1()8. t. 3]. 

 Vitrina suturahs a, Beck, MSS. 



^. Smaller, whitish-glassy, with the spire less elevated. — Pfr. 

 /c. t. 122. f. 21. 



Vitrina sutm-ahs /3, Beck, MSS. 

 Microevstis margarita. Beck, MSS. 



Mbrch, Cat. Yold. 2. n. 30. 

 Hab. Albulug, island of Zugon ; var. /3. from Camiguing (H, 



Cuming). 



This shell differs from H. glauca by its spire less elevated, and 

 by the more slowly increasing whorls, the last one being nar- 

 rower. 



79, Nanina maxima. 



Shell perforated, depressed, slightly turbinated, solid, heavy, 

 obliquely and irregularly striated, fulvous above, marked with 

 broader and narrower yellow bauds ; spire suljturbiuate, with the 

 apex rather blunt ; suture deep ; whorls six and a half, enlarging 

 slowly, the upper ones flat, the following regularly vaulted, the 

 last keeled at its periphen', moderately convex, shining, chestnut- 

 coloured beneath ; apertiu*e little oblique, lunate, milky-white 

 within ; peristome simple, straight, blunt, T\'ith distant margins ; 

 basal margin somewhat thickened within, shortly dilated above 

 and almost covering the perftn-ation. Height 42, greatest breadth 

 90, least breadth 71 mill. {Pfr.) 



Helix maxima, Pfr. in Proc. Zool. Soc. 1853, p. ; Mon. Suppl. 



627. 

 Hab. Philippine Islands. 



80. Nanina Oweniana. 



Shell perforated, turbinately depressed, thin, radiatingly striated 

 above and decussated with extremely crowded spiral striaj, not 

 shining, fulvous ; spire shortly conoiilal, blunt ; suture bordered ; 

 whorls four and a half, enlarging gradually, convex, the last not 

 descending, with a pale keel at its periphery and a rufous band 

 below the keel, horny-greenish and shining beneath, with irregu- 

 larly impressed spiral hues; aperture nearly diagonal, Innate, 

 rather rhomboidal, pearly within ; peristome simjjle, straight, 



