1917J H.H.Godwin-Austen: MoUusca, VII. S77 



finer and closer on the two last, the first 2 whorls smooth ; colour 

 white; spire pyramidal, becoming rapidly attenuate, apex fine, 

 blunt; suture well impressed; whorls 7, penultimate the largest, 

 sides well rounded, tumid; aperture oval, sub vertical ; peristome 

 well thickened, distinctly double. 



Size: major diam. 2'5, alt. axis. 475 mm. 



Seven specimens of this species were sent home. As only 

 two species of this genus are known from this great valley of the 

 N.E. Himalaya, it is evident that many more remain to be dis- 

 covered. 



Diplommatina acutulus, n. sp. 

 (Text-fig. 4 C.) 



Locality . — Miri Hills (Officers of Miri Mission, 1911-12), 



Shell dextral, very elongate and slender ; sculpture fine regu- 

 lar rather close costulation; colour white, with a very pale ochra- 

 ceous tint; spire turreted; suture impressed; whorls 9, regularly 

 increasing from the apex to the 7th, which is the largest, sides con- 

 vex; aperture ovate, vertical; peristome circular, double; colu- 

 mella margin subvertical; tooth small, blunt. 



Size: major diam. I'O, total length 2*4 mm. 



This species recalls D. exilis, W. Blf,, from Ava, but it is far 

 more attenuate and smaller It is a beautiful shell, and fortu- 

 nately 2 examples were found in the earth which had fallen out 

 of empty shells of Cyclophorus, showing what a rich and interesting 

 moUuscan fauna awaits a collector in these mountains. 



Diplommatina miriensis, n. sp. 

 (Text- fig. 4 D.) 



Locality. — Miri Hills (Officers, Miri Mission, 1911-1912). 



Shell dextral, tumidly fusiform ; sculpture regular, strong, fairly 

 distant costulation; colour pale, with an ochre tinge; spire taper- 

 ing rapidly, apex blunt; suture impressed; whorls 5, tumid, con- 

 striction above the aperture; aperture vertical, oval; peristome 

 double, strong, broadly ovate; columella margin nearly vertical, 

 with a strong tooth. 



Size: major diam. o 9, alt. axis i'5 mm. 



Only a single example of this minute shell was found in the 

 earth that had fallen out of empty shells of the larger species, 

 which covered the tray in which the specimens sent home were 

 unpacked. Searching it over with a lens I was rewarded by its 

 discovery and that of a second minute species. 



Subfamily POMATIASINAE. 



Pseudopomatias, von MoUendorff, 1885. 



I adopt this generic title. It is of interest to note that 

 William Blanford writing so long ago as 1864 in the Annals and 



