HELICIDiE. 81 



« 145. Helix (Acavus) skinneri, Reeve. 



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



c 146. Helix (Acavus) waltoni, Reeve. 

 9 Ceylon ; coll. Hugh NeviU, Esq. 



. var. albolabris. 



1 Ceylon ; coll. Hugh Nevill, Esq. 



147. Helix (Acavus?) trailli, Pfeiffer. 



1 Borneo ; ex c. Damon. 



Sub-Genus 8TYL0B0N (tj-ge H. unidentata). 



• 148. Helix (Stylodon) unidentata, Ohemn. 



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

 G. Nevill, Esq. 



' 149. Helix (Stylodon) studeriana, Penissae. 



14 Praslin, on the stems of the " Coco de M^r j'' coll. G. NeviU, Esq. 



Sub-Genus EUOOCELIAS, Theobald (type S. octhoplax). 



[= ? Sadra, Albers. pars ? = PJiania.] 



H. sulaoomcta. Martens, and H. pyrostoma, Ferussac, appear 

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

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

 the type of the Sub-genus, Phania. 



The Group is probably close allied to Stylodon, possibly not 

 separable. 



• 150. Helix (EuCOChlias) OChtllOplaX, Benson. 



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

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



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

 following note on Eucoehlias oathoplax : "A true Helix, nearly 

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

 grooved.— W. T. B." 



- >, 161. Helix (Eucoehlias) ? bougainvillei, Pfeiffer. 



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



162. Helix (Eucoehlias) ? illustris, Pfeiffer. 



II Cambodia ; ex c. Damon. 



