XXXIX. MOLLUSC A, III: 



CYCLOPHORIDAE {In part). 



By Lt.-Colonel H. H. Godwin- i\.usTEN, F R.S. 



(Plates xxxviii-xl). 



I now continue the descriptions of species recently collected 

 in the Abor Hills by Mr. Kemp, commenced in this Journal in 

 March, 1914. 



The list of interesting new species has been much increased, 

 for during the cold weather of 1913-14 Lt. G. F. T. Oakes, R.E. 

 has again been conducting survey operations in the Tsanspu 

 Valley, and has added largely to the collection of land-shells. 

 He reached a point on the Great River about Lat. 29° 15' and 

 Long. 95°i5' ; and I have here to thank him for finding time to 

 add to our knowledge of the moUuscan fauna of this portion of 

 the Eastern Himalayan Range. 



In the Helicidae I submit the descriptions of the seven species 

 of Plectopylis that have come to hand, a most interesting set in 

 many respects and all new. Two species were found by Mr. 

 Stanley Kemp, the rest by Lt. G. F. T. Oakes, R.E. These I 

 have entrusted to our best authority on the group, Mr. G. K. 

 Gude, well known b}'- his past work on the genus in " Science 

 Gossip", 1898-99. The remainder of this second contribution I 

 devote to the Prosobranchia or operculated land-shells ; the 

 collection contains a most interesting series. It is quite apparent 

 we have as yet only a foretaste of what lies hidden in the depths 

 of the valleys and on the forest-clad ridges and peaks many 

 thousand feet above them , and what a harvest awaits the man 

 knowing how to look for and how to deal with the material that 

 would come to hand, I envy that man who may have the good 

 fortune to go there. 



List of Genera in the Collection. 

 PROSOBRANCHIA. 

 Fam. CYCLOPHORID.E. 

 Sub-fam. CYCLOPHORINAE. 



Cyclophorus. 



Myxostoina. 



