128 Records of tkc Indian Museum. [Vol. XXII^ 



Stenothyra soluta, Annandale and Prashad. 



igig^ Stenoiltyra soluta, Annandale and Prashad. Rec. Ind. Miis. 

 X\"l. pp. 247, 248, fig. ,s ; pi. XX, fig. 6. 



We have nothing to add to our recent account of the species 

 beyond noting the intermediate character of the shell, so far as 

 the form of mouth and the narrow boss are concerned, between 

 the forms separated by us into the subgenera Stenothyra, s.s and 

 Astenolhvra. S. suluta, however, has a closer relationship with 

 other species of the subgenus Stenothyra than with any of the 

 known forms of Astenothyra. Its existence prevents us from separ- 

 ating Astcnothyra generically. 



Stenothyra atomus, Ncvill, MS. (Prashad). 

 Plate XVI, figs. 3, 4. 



1S85. Stenothyra, n. sp., Nevill, o/>. cit., p. 45. 



In the reference cited above Mevill referred to a single speci- 

 men from Arakan, Burma, in the collections of the Indian Muse- 

 um, as a new species of Stenothyra. He called this species by the 

 name S. atomus on a label, but did not publish any description or 

 figure of it. I describe it here under Nevill's manuscript name. 



The shell of this species is very small, thick, and in the single 

 specimen bleached white. It is of a regularly ovoid form with 

 the body-whorl only slightly flattened ventrally in its anterior 

 half. The apex is obtuse and there are 4^ whorls. The suture is 

 moderately impressed, but much less so dorsally than ventrallj'. 

 The whorls of the spire increase rapidly and irregularly; the first 

 whorl is very minute, the second is fairly prominent but narrow, 

 while the penultimate whorl is much larger, band-shaped and 

 moderately inflated. The body-whorl is large but rather narrow, 

 in dorsal view it has a somewhat triangular outline owing to the 

 outer border forming a continuous curve with the lower margin, 

 ■the inner margin is also regularl}' curved ; seen from the ventral 

 side it appears somewhat pyriform. The mouth is subcircular or 

 rather elongate-circular, with a thickened margin which, however, 

 does not show any trace of being recurved No sculpture can be 

 made out in the unique type. 



Measurements of type-shell (in millimetres). 



Length . . . . . . . . f4 



Breadth of the body-whorl . . . . -8 



Length of the spire (dorsal view) . . '65 



Aperture . . . . . . • ■ "4 



Type-specimen. — No. 2214 in the collections of the Zoological 

 Survey of India (Indian Museum). 



Locality. — The only specimen of this species we have seen 

 is the unique type from Arakan, Burma collected by the late Dr. 

 F. Stoliczka. 



Remarks.— Th^ species, though allied to 5. minima, is distin- 

 guished easily from the latter by the spire being very short and 



