81 



l|5. Helix (Acavus) skinneri, Reeve. 



1 Upper Onavah, Ceylon ; coll. F. L. Layard, Esq. 



146. Helix (A.cavus) waltoni, Reeve. 



9 Ceylon ; coll. Hugh Nevill, Esq. 



var. albolabris. 



1 Ceylon ; coll. Hugh Nevill, Esq. 



147. Helix (Acavus?) trailli, Pfeiffer. 



1 Borneo ; ex c. Damon. 



' Sub-Genus 8TTLODON (type H. unidentata). 



148. Helix (Stylodon) unidentata, Chemn. 



24 Mahe, Praslin, Curieuse, Felicite and Silhouette, Seychelle I.; coll.' 

 G. Nevill, Esq. 



149. Helix (Stylodon) studeriana, Ferussac. 



14 Praslin, on the stems' of the " Coco de M6r j" coll. G. Nevill, Esq. 



Sub-Genus EUCOCHLIAS, Theobald (type H. octhoplax). 



[= ? Hadra, Albers. pars ? = Phania.~] 



H. sulcocincta, Martens, and H. pyrostoma, Ferassac, appear 

 both to belong to this sub- genus. I think the Group will pro- 

 bably prove separable from that of the West Indian H. lamp as, 

 the type of the Sub-genus, Phania. 



The Group is probably close allied to Stylodon, possibly not 

 separable. 



150. Helix (Eucochlias) ochthoplax, Benson. 



4 Khasi Hills ; coll. Major H. H. Godwin- Austen, 

 1 Pegu j ex c. As. Soc., Bengal. 



I am indebted to Mr. Blanford's constant liberality for the 

 following note on Eucochlias octhoplax : "A true Helix, nearly 

 black, with pale, tawny markings, surface granulate; jaw 

 grooved. W. T. B." 



151. Helix (Eucochlias) ? bougainvillei, Pfeiffer. 



1 Solomon I.; ex c. Dr. J. C. Cox. 



152. Helix (Eucochlias) ? illustris, Pfeiffer. 



II Cambodia ; ex c. Damon. 



