SOME EEMARKS ON THE GENERA BAMAYANTIA, ISSEL, 

 COLLING E A, SIMR., AND ISSELENTIA, CLLGE. 



By Walter E. Collinge, M.Sc. 



Mead IZth November, 1903. 



In^ a recent issue of the "Proceedings" of this Society,' Lieut. -Col. 

 Godwin-Austen criticises some work of mine upon the iJornean Sing 

 fauna. I should not have troubled to notice this article under 

 ordinary circumstances, for the facts are so clear and the material 

 before me so convincing, but I had previously promised the writer to 

 do so, and further if I were to treat it with sileuce, malacologists and 

 others unacquainteil with these little known genera of land molluscs 

 might possibly think there was some foundation for Lieut -Col. 

 Godwin- Austen's statements. 



Very briefly I must tirst sketch the history of the material under 

 discussion. 



In October, 1893, Mr. Edgar A. Smith sent me for identification 

 a small collection of slug-like molluscs, received by the British 

 Museum from the late Mr. A. H, Everett, and collected by him in 

 Sarawak, N.W. Borneo. These were described by Lieut-Col. Godwin- 

 Austen and myself in 1895 (^), and named Bamayantia Stnithi, 

 Microparmarion Pollonerai, and M. Simrothi. In this paper the 

 drawings and descriptions of the generative organs were made by the 

 present writer from his own dissections, together with the " Summary 

 and Conclusion," but the bulk of the drawings were made bv the 

 co-author, as also the remarks on "Affinities." 



In 1898 Professor Simroth published a valuable paper on some 

 species of Parmarion, etc., from China, Java, etc. (4), in which he 

 constituted a new genus ( Collimjed) for a Javan slug previously 

 known as Microparmarion StruheUi, and he pointed out that what 

 Lieut. -Col. Godwin-iiusten and I had termed Microparmarion Pollonerai 

 and M. Simrothi must also be referred to the genus Collingea, for in all 

 three members of the genus there is a very striking anatomical 

 character, viz., a protrusion of the distal portion of the penis-tube, 

 handle-like, out of its sheath, a feature which, doubtless owing to our 

 then insufficient acquaintance with and knowledge of these Parmarion- 

 like slugs, we failed to realise the importance of. 



In 1900 I received from the Sarawak Museum a collection of slugs 

 from N.W. Borneo, and in working at these I had occasion to 

 re-examine the previous Bornean material in the British Museum. 

 I should perhaps mention that between 1893 and 1900 I had 



1 Vol. V, p. 311. 



