XL VIII. MOLIvUSCA, VIII. 



MacrochIvAmyinae [In part). 



By IvT.-CoLONEi. H. H. God win- Austen, F.R.S. 



(Plates LI— LIV.) 



This contribution to the Abor land-mollusca collected by 

 Mr. S. W. Kemp and Capt. G. F. T. Oakes, R E., treats of species 

 belonging to the subfamily Macrochlamyinae, of which only one 

 species, Sarama kempi, was described in my first short paper.' 

 The very large number of species collected on the expedition, 

 and the majority of them proving new. has been the chief reason 

 that publication of the results has been so slow ; I have also been 

 occupied in other work. I have considered it as well to deal with 

 the larger shells first leaving the very minute species (appertaining 

 to Macrochlamys) from the Abor Hills. Brahmakund and the neigh- 

 bourhood of Sadiya for future examination. The latter are very 

 difficult to determine ; they often prove to be young shells and 

 their generic position is alwa^^s very doubtful. 



Where we are to look for a molluscan fauna allied to that of 

 the Abor Hills and the eastern end of the Assam Valley has con- 

 siderable interest. The Mali Hka and N'mai Hka head tribu- 

 taries of the Irrawady as well as to the Sal ween looks to be the 

 most likely direction. At present we know nothing of the land 

 shells in that northern area, only a Spiraculum from Putao has 

 been received — 5. putaoensis, which is very close to one from the 

 Abor Hills—S. minimum. For further knowledge of the ana- 

 tomy and range of the new genera described in this contribution 

 specimens in spirit are much wanted, and I trust before long they 

 may be collected. 



In the sub-family Macrochlamyinae, it is curious to say that 

 from Pegu and the Shan States, although a good number of 

 species are known by shell character, we are in complete igno- 

 rance of the animal, until we reach Tenasserim where Stoliczka 

 and Theobald collected years ago and the former began his ana- 

 tomical researches. 



From Pegu many species occur to me of which the generic 

 position assigned is not at all certain. 



In the Fauna of British India, iqo8, p. 115, there is M. ? 

 consepta, Bs. This should be transferred to p. 279, to the genus 



1 Rec. Lid. Mils., VIII, pp. 362-363. ?•• ^^'^'^''> ^g^- 6-8; pi- xxiv, fig. 6-7 

 (1914). 



