1895.] ON NEW MOLLUSCS FROM BORNEO. 241 



3. On the Structure and Affinities of some new Species of 

 Molluscs from Borneo. By Walter E. Collinge, 

 F.Z.S., Assistant Lecturer and Demonstrator in Zoology 

 and Comparative Anatomy, Mason College, Birmingham, 

 and Lieut.-Col. H. H. Godwin-Austen, F.R.S., F.Z.S., 

 &c. 



[ReceiTed February 28, 1895.] 

 (Plates XI.-XIV.) 



Contents. Page 



I. Introduction 241 



II. Damayantia smithi, n. sp 242 



Description of Shell 242 



Description of Animal 242 



1. Anatomy 243 



Visceral Mass, &c 243 



Generative Organs 243 



2. Affinities 243 



III. MiCEOPARMARION POLLOMEUAI, n. Sp 244 



Description of Shell 244 



Description of Animal 245 



1. Anatomy 245 



Visceral Mass, &c 245 



Generative Organs 245 



IV. MiCROPARMARiON simrotiii, n. sp 246 



Description of Shell 246 



Description of Animal 246 



1. Anatomy 246 



Visceral Mass, &c 246 



Generative Organs 247 



2. Affinities 247 



V. Summary AND Conclusion 248 



VI. Bibliography 249 



VII. Description op thk Figures (Plates Xr.-XI V.) 249 



I. Introduction. 



The molluscs which form the subject of this paper were some 

 collected by Mr. A. H. Everett in Borneo and forwarded to 

 Mr. Edgar A. Smith of the British Museum, who very kindly 

 placed them in the hands of one of us (W. B. 0.) for investi- 

 gation. 



While fully describing the species, we have thought it necessary 

 and important to treat at some length of the affinities structurally 

 and externally, and to compare them with other genera and 

 species of the Indian and Malayan fauna, upon which one of us 

 (H. H. G-.-A.) has worked for some considerable time. 



The perfect specimens and the dissected parts have all been 

 placed in the collection of the British Museum, South Kensington. 



It is sincerely to be hoped that further Bornean material will 

 be obtained, as there are probably not a few very interesting 

 forms in that region which bridge over the gaps that at present 



Proc. Zool. Soc— 1895, No. XVI. 16 



