•500 PUPILLID.i:. 



inside with 5 lamellar teeth, 4 of which are equidistant aud 

 opposite to each other, at the upper and lower corners of the 

 mouth, so as to form a partial St. Andrew's cross, while the fifth, 

 which is smaller, is close to aud above that at the upper corner of 

 the parietal margin. Peristome fi-ee, simple, broadly expanded 

 and trumpet-shaped."' (Blanford.) 



Major diam. '3, minor 2-2, alt. 2 mm. Diam. of peristome 

 1 mm. 



Jlab. Burma : Mya Leit Doung, Ava {Blanford, Oldham). 



" The differences between this shell and Hi/jiselostoma tuhiferum, 

 Benson, hitherto the only known species of tlie genus, are 

 luimerous. That shell has the spire scarcely exserted, while 

 the last whorl ascends so much that the mouth, which is hori- 

 zontal, IS on a level with the apex. In the present species the 

 spire is conical, the mouth nearly vertical, and the last whorl 

 only ascends very slightly. In JI. tuhiferum also, there are more 

 teeth in the mouth, they are situated further back from the 

 aperture, and are somewhat differently disposed, the upper two 

 lamellae being produced in front of the others, and forming an 

 imperfect tube. There are also minor differences in striation, 

 mnbilicus, etc. Nevertheless the general appearance of the two 

 species is strikingly similar, and the peculiar shape of tlieir whorls 

 and mouth recalls those of the Brazilian genus Anostoma, Lam." 

 {Blanford.) 



8ome specimens in the Theobald collection measure : major 

 diam. 3, min. 2, alt. 2 mm. (including the peristome). 



269. Hypselostoina dayanum, Stolkzl-a. 



Hypselostoma dayanum, Stoliczka, J. A. S. B. xl, 1871, p. 172, pi. 7, 

 ■fi^'. -2; Ilanlev & Theobald, Conch. Ind. 1876, pi. U7, fig. 10; 

 rfeiffer, Mon." Ilelic. Viv. vii, 1876, p. 488; PfeitTer & Clessin, 

 Xomencl. Ilelic. Viv. 1S81, p. 344. 



Pupa {Hypselostoma) dayana, Nevill, Hand List, i, 1878, j). 193. 



Original dt'scri]itioa : — "Hypselostoma testa minuta, conoidea, 

 solidiila, pallide brunnea, apice obtusiuscula, late profundeque 

 perspective umbilicata ; anfractibus 4, convexis, suturis profundis 

 sejunctis, primo kevigato, submannnillato, ceteris striis incrementi 

 subobsoletis notatis, ultimo maximo, fere plane voluto, supra ad 

 peripheriam subangulato, deinde sensim aiigustiore et ad marginem 

 umbilici rursus obtuse angulato ; apertura fere verticali, vix 

 descendente, conspicuiter dilatata, subcirculari; inarginibus junctis, 

 intus crassiusculis et plicose dentatis ; labio adnato modice ex- 

 pansiusculo, bidentato, dente superiore majore; labro six-dentato ; 

 dentibus duobus in regione columellari sitis subdistantibus, alteris 

 duobus, in margine exteruo, similariter inter se remotis, sed 

 duobus in marg. basali sitis approximatis, parvis. 

 "Diam. maj. I'l, d. min. 0-8 : altitudo 1 mm." 

 Hah. Burma : Uamotha near Moulmain. [StoliczTca.) 

 "It is the third kuo^n species of the genus. In general form 



