102 PULMONATA. 



with distant margins ; columellar margin declivous, callous, sinu- 

 ated above, shortly dilated and reflexed near the jierforation. 

 Height 17, greatest breadth 32, least breadth 2fii mill. {Pfr.) 



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

 Suppl. 628. 



Hab. Philij)pine Islands. 



81. Nanina Armida. 



Shell subperforate, rather turbinate, thin, faintly and minutely 

 striated, diaphanous, slightly shining, fulvous horn-coloiu-ed; spire 

 convexly conoidal, with a subtle and rather blunt apex ; sutm-e 

 impressed, bordered with white ; whorls six, moderately convex, 

 enlarging gradually, the last not descending, furnished with a 

 short, sharj), white keel, more convex beneath ; aperture nearly 

 perpen(hcular, lunate, slightly angled ; peristome simple, straight, 

 with distant margins ; columellar margin declivous, slightly 

 thickened above. Height 8, greatest breadth 16, least breadth 

 14 mill. (Pfr.) 



Helix Armida, Pfr. in Z.f. M. 1853, p. 53; Mon. Suppl. 628. 



Hab. Mount Isarog, Isle of Luzon (H. Cuming). 



82. Nanina ceratodes. 



Shell subperforated, globosely-depressed, thin, minutely stria- 

 tulate, nitidulous, pellucid, homy ; spu-e scarcely elevated ; 

 whorls five, subplanulate, increasing rapidly, the last subde- 

 pressed ; a^jerture ample, obliquely lunar ; peristome simple, 

 acute; columellar margin very slightly reflected, nearly hitting 

 the perforation. Lat. maj. 16-i-, min. 14, alt. 9 mill. 



Helix ceratodes, Pfr. in Proc. Zool. Soc. 1845, p. 128. 



Chenin. ed. 2, Helix, n. 690. t. 110. f. 16, 17. 



Pfr. Mon. Helic. i. 57- 



Reeve, n. 150. t. 34. f. 147-150. 

 Viti'ina centralis, Beck, MSS. 

 Hab. Luzon and Mindoro, Philippines. 



83. Nanina succinea. 



Shell depressed, obsoletely perforated, thin, pellucid, bright, 

 amber-like ; sutm-e moderate, slightly margined ; whorls five, 

 increasing rapidly, very slightly convex ; ajjcrtin-e lunar ; peri- 

 stome simple, acute ; columellar margin slightly reflected, cover- 

 ing the obsolete perforation. Lat. maj. 10, min. 8i, alt. 6 mill. 



