78 HELIX-PATULA. 



spot, or (3) streaked, and having a dark band just below the periph- 

 ery. Surface nearly smooth. 



Spire low-conoidal, apex obtuse ; whorls 5, very slightly convex, 

 the last not descending in front, narrowly excavated at the axis. 

 Aperture oblique, lunate, white and dark within ; peristome thin 

 and simple, very shorily reflexed at the columellar insertion. 



Alt. 7, diam. 10 mill. 



Norfolk Island. 



H.flosculus Cox, P. Z. S. 1865, p. 695 ; Journ. de Conchyl. 1866, 

 p. 48. PFR., Monogr. v, p. 128. 



This species has much resemblance in form and color to H. kivi 

 Gray, of New Zealand ; and it probably belongs to the same genus, 

 although it may prove to be a Nanina. 



Genus PATULA (vol. Ill, p. 19). 



P. VIRIDESCENS Melvill & Ponsonby. PI. 30, fig. 32. 



Shell profoundly, broadly umbilicated, thin, flat-depressed, whit- 

 ish, covered with a corneous cuticle. Whorls 3, rapidly increasing, 

 smooth, shining; the last whorl large, subeifuse. Aperture lunar- 

 ovate, oblique ; peristome simple, thin. Alt. 2, diam. 5 mill. 

 (M. & P.) 



Pretoria, Transvaal. 



H. (Patula') viridescens M. & P., Ann. and Mag. N. H. (6), viii, 

 p. 238; 1. c., vol. ix, t. 4, f. 1. 



A small shell with olivaceous epidermis and of simple character. 



P. SPURCA Sowerby. PI. 36, figs. 1, 2. 



Shell narrowly umbilicated, suborbicular, thin, whitish variega- 

 ted with rufous, hardly shining; spire little elevated, obtuse at 

 apex; whorls 5, a little convex, regularly and slowly increasing, 

 striated with oblique, flexuous, close growth lines; last whorl 

 rounded at the periphery, hardly descending in front; aperture 

 wide-lunate, simple, scarcely toothed or li rate; peristome thin, the 

 columellar margin slightly expanded and reflexed. 



Alt. 31, greater diam. 5, lesser 4? mill.; aperture 2i long, If 

 wide. (Smith.) 



Sugarloaf Hill and Quarry, St. Helena (extinct). 



Helix spurca SOWB., in appendix to Darwin's Geol. Obs. on 

 the Volcanic Islands, etc., p. 157. FORBES, Journ. Geol. Soc. 



