I9f5-] H. H, Godwin-Austen : Mollusca, III. 497 



Size: major diam. 26"5 ; alt. axis 7 mm. (lyargest 30*0 Pong- 

 ing). 



This is very close to the next species Sp. planum found by 

 Mr. Kemp, but which in a few minor characters differs too much 

 to be considered the same; unfortunately there are only two very 

 old bleached specimens of it, 



Type No. 3105 (figs. 4, 4a) Brit. Mus. ; No. 3047 B.M. from 

 Ponging (figs. 5, 5rt). 



Two specimens to Indian Museum. 



Spiracu^um planum, n. sp. 

 (PI. xxxix , figs. 6, 6a, 6b). 



Locality: Upper Rotuag, Abor Hills; No. 5992, Upper Ro- 

 tung; No. 5q92a, Yembung [Kemp). 



Shell similar to 5. kempi. Sculpture, rather coarser spiral 

 ribbings. Colour bleached. Spire very low, the apex scarcely 

 showing above the last whorl. Suture deeper. Sutural tube only 

 6*5 from the peristome, it is 4 mm. long and sharply recurved 

 backward. Whorls 5. Aperture circular. Peristome double, 

 thickened, outer lip expanding into a somewhat lengthened open 

 wing, ascending on the whorl next it, not descending as in previous 

 species. 



Size : major diam. 30"0; alt. axis 6'0 mm. 



A single small variety, bleached, only 28 mm. in major diame- 

 ter, was sent to me from the Miri Hills. No. 3596 B.M. 



Type No 5992 Ind. Mus. 



Spiraculum nevilli, G.-A. var. 



Locality: Luyor, Abor Hills, 2i-vii-i3 {Oakes). 



The wing or spout is not so long in typical nevilli from the 

 Dafla Hills, and the last whorl near the aperture descends much 

 more than in this Abor shell, otherwise they are very close in 

 form. The Abor shells are not so very much mottled, but have a 

 distinct band, and they are much smaller. 



Size: major diam. 23'25; alt. axis 4*8 mm. 



Type No. 3531 Brit. Mus. 



Spiraculum nevilli, G.-A. var. (large). 



Locality : Abor Hills, 3 young specimens and one fully grown 

 put up alive, 4-i-i3. 



Shell very openly umbilicated, discoid. Sculpture, close spi- 

 ral liration, accentuated at the middle half of the whorl looking 

 at it from above. Colour dark madder brown, mottled or rather 

 streaked closely with ochre bands which, as they approach the 

 apex, are closely zig-zagged, beneath plain. A distinct black band 

 on the periphery. Spire very flat. Suture impressed. Whorls 

 5, regularly increasing. Aperture circular, oblique. Peristome 

 double, thickened, much reflected, expanding forward near suture 

 into a spout-like shape, which continues as a raised, pronounced 



