HELIX. 165 



the margins joined by a parietal callus; armature similar to H. 



Karenorum. 



Near Moulmein, Tenasserim. 



H. catinus, Benson (not of Pfeiffer) is a synonym. 



H. ACHATINA, Gray. PL 35, figs. 3-5, 7, 8. 



Sinistral, very widely umbilicated, smooth, reddish brown above, 

 maculated and flamed with whitish, base pale; whorls 6?, the last 

 subcompressed on the sides, suddenly deflected in front; peristome 

 brownish, the margins joined by a prominent parietal callus, teeth 

 of the aperture similar in arrangement to If. Karenorum, but with 

 an. additional horizontal parietal lamina. 



Burmah. 



H. repercussa of Gould, is a synonym. 



H. ANGUINA, Gould. PI. 35, fig. 6. 



Smooth, sinistral, chestnut color, radiated below; whorls 5, the 

 last subangulated at the periphery, dentition of aperture similar to 

 last species. Diam. 1 inch. 



Tavoy, Burmah. 

 H. INVIA, Heude. PI. 36, figs. 17-20. 



Dextral, whorls 5 1, with impressed suture, vitreous shining, the 

 last not angulated but laterally compressed, a little descending; 

 aperture with four palatal plicae, and one smaller close to the 

 umbilicus, vertical parietal lamina strong. Diam. 16 mill. 



Tchenkeou, China. 



The armature is not fully described or figured by the author of 

 this species. 



H. SCHISTOPTYCHIA, Mollend. PL 36, figs. 21, 22. 



Dextral, decussately costulately striate above, smooth below, 

 brownish corneous; whorls 6i, the last laterally compressed, with 

 obtusely angulated periphery, deflected anteriorly; parietal wall with 

 a vertical lamina, crossed by a horizontal short one at its extremities, 

 palate with two series of five plicse. Diam. 6'5 mill. 



Prov. Hunan, China. 



H. LAMINIFERA, Mollend. PL 36, figs. 23, 24. 



Dextral, costulate-striate and spirally lineated above, smooth 

 below; whorls 7, the last with acutely angulated, laciniated 

 periphery ; parietal vertical lamina, with a short transverse lamella, 

 palatal plicae 6, short, in a single series. Diam. 14 mill. 



Prov. Hubai, China. 



