PULMONATA. 103 



Helix succinea, Pfr. in Proc. Zool. Soc. 1845, p. 39. 



Cliemn. ed. 2, Helix, n. 541. t. 87. f. fi-8. 



Pfr. Mon. Helic. i. 58, 



Reeve, n. 161. t. 36. 

 Nanina (^Microcystis) succinea. Alb. 60. 



Hab. Luzon and Mindoro, Philippines. 



84. Nanina subfusca. 



Shell subperforate, depressed, thin, minutely striated, pellucid, 

 brownish horn-coloured ; spire scarcely raised ; suture slight, 

 somewhat bordered ; whorls four and a half, scarcely convex, 

 enlarging rapidly, the last rounded at its periphery, not descend- 

 ing anteriorly ; aperture a little oblique, broadly lunate ; peri- 

 stome simple, thin, straight, w'ith convergent margins ; right 

 margin rather sinuate, columellar margin nearly perpeudicidar, 

 scarcely reflected above. Height 6j, greatest breadth IH, least 

 breadth 10 mill. {Pfr.) 



Vitrina subfusca, Beck in Mus. Cuming. 



Hehx subfusca, Pfr. in Proc. Zool. Soc. 1848, p. 109; Z.f. M. 



1848, p. 91 ; Ic. n. 761. t. 122. f. 16-18; Mon. Suppl. 62. 

 Hab. Isle of Luzon {H. Cuming). 



85. Nanina lucidella. 



Shell minute, perforated, depressed, striatulate, very bright, 

 brimneous ; spu'C subplanulate ; suture white-margined ; whorls 

 four, level, the last scarcely more convex beneath, impressed in 

 the middle, very naiTowly ])erforated ; apertme obliquely lunar ; 

 peristome simple, obtuse ; columellar margin steep, scarcely 

 thickened. Lat. maj. 3f, min. 3, alt. 2 mill. 



Helix lucidella, Pfr. Proc. Zool. Soc. 1846, p. 41; 3Ion. Helic. 

 i. 60. 



Reeve, Conch. Icon. n. 164. t. 37. 

 Hab. Luzon, Philippines. 



86. Nanina sagittifera. B.M. 



Shell subperforated, depressed, thin, pellucid, obliquely striated 

 and obsoletely uTinkled, fulvous, ornamented with arrow-shaped 

 spots, and a single obsolete red band at the keel ; suture im- 

 pressed, slightly channeled at the last whorl ; whorls four and 

 a half, nearly level, the last inflated ; aperture very oblique, 

 lunate-oval, milky inside ; peristome simple, slightly thickened 

 at the columella, scarcely reflected, upper margin deflected. 

 Lat. maj. 47, min. 38, alt. 26 mill. 



