roo Records of the Indian Museum. [A^ol. VIII, 



directed upwards ; columellar margin rounded ; operculum not 

 seen. 



Size : maj. diam. 2"i ; alt. axis i'4 mm. 



Type No. 713 B.M. 



I have had this species for many years ; it was given me by 

 Mr. Ogle, collected when he was surveying in Eastern Assam. 

 The opportunity now occurs of bringing it to notice, with the 

 fine series from the contiguous Ahor Country. It is interesting 

 to compare its form with Pterocyclos miriensis, and to note the 

 differences, particularly in the sculpture of the latter. 



Pterocyclos magnus, G.-A. var. 



A single specimen, with peristome not quite perfect and surface 

 in poor condition, was sent me by officers of the Survey with the 

 Miri Mission. It comes nearest to the above Dafla Hill shell in 

 general form, the markings differ considerably. Major diameter 

 2475. It should be looked for again. No. 3599 B.M. 



? Spiraculum luyorcnsis, n. sp. 



(PI. xl, figs. 5, 5a, 5&). 



Locality: Luyor, Abor Hills (Oakes). 



Shell openly umbilicated, orbiculate, very depressed. Sculp- 

 ture, a smooth epidermis, lines of growth very fine and close. 

 Colour a very rich dark madder brown, broad dark bands close 

 set, cross the third whorl transversely. There is a narrow peri- 

 pheral band. vSpire very low, apex just showing above the plane 

 of the last whorl. Suture impressed, the sutural tube close be- 

 hind the aperture, 3 mm. distant, 3 mm. in length and curving 

 backwards. Whorls 4, the last expanding rapidly. Aperture 

 circular, sub- vertical. Peristome double, not very thickened, 

 slightly reflected, at the suture, the outer lip is extended forward 

 into a long spout resting on the periphery. 



Size: major diam. 18-75; alt. axis 4*8 mm. 



Type No. 3530 Brit. Mus. 



This is close to Pterocyclos spir amentum, but is distinct in its 

 much flatter apex, and far wider umbilicus. The peristome 

 presents a stage further towards, and has reached the develop- 

 ment of Spiraculum, rendering it a more than usually interesting 

 species. 



Spiraculum putaoensis, n. sp. 



(PI. xl, figs. 3, 3a, 36). 



Locality: Putao, Upper Burma, May 1914, 3 specimens 

 {Capt. C. E. Morris). 



Shell widely umbilicated, orbicularly depressed. Sculpture, 

 fine regular transverse striae of growth. Colour, bleached, and 

 epidermis gone ; zig-zag streakings at regular intervals cross the 



