16G F. Stoliczka — Notes on terrestrial Mollusca. [No. 2, 



Streptaxis solidulus, Stol., pi. vii, fig. 10. 



St. testa ovato-conoidea, moderate unibilicata, albida, solida ; 

 anfractibus 7, priinis 5 regularibus, spiram exsertarn, late conicam, 

 formantibus, duobus ultimis modice deviantibus, omnibus planius- 

 culis, seii subconvexis, sutura impressa simplici junctis, transversim 

 conferte costulatis : costulis flexuosis, in ultimo anfractu distan- 

 tioribus, basi obsoletis ; apertura late subquadrangulari : labio 

 tenui prope medium uniplicato, labro intus levi, undique planate 

 reflexiusculo ; diam. maj. 12, d. min. 9'3, axis 9, alt. testae 11*2, 

 lat. aperturse, marg. incl., 7*2, alt. ap. 5*2 m.m. 



Hab. Prope Moulmein, provintia Tenasserim. 



A moderately large tumid and solid form, with rather flattened 

 whorls and a prominent broadly conical spire ; the first two whorls 

 are generally quite smooth, the remaining transversely costulated, 

 the ribs being on the last whorl a little more distant from each 

 other, than on the previous ones ; on the base they become quite 

 obsolete. 



Only a few specimens were found by Mr. Theobald at Yethebian- 

 koo on the Attaran river, south-east of Moulmein. 



Streptaxis obtusus, Stol., pi. vii, figs. 11, 12, 13, and pi. viii, 

 figs. 1-4. 



St. testa oblique ovata, tumida, apice obtusa, antice sensim atte- 

 nuata, perforata ; anfractibus 7, quinque superioribus regularibus, 

 supra convexiusculis, antepenultimo paulo obliquo, ultimo modice 

 deviante, aperturam versus compressiusculo ; peripheria in juniori- 

 bus (fig. 13) rotundate subangulata, in adultis fere uniforme con- 

 vexa ; anf. omninis suturis impressis junctis, in superficie arcuatim 

 conferte costulatis : costulis ad basin (in junioribus depressiuscu- 

 lam, in adultis convexiorem) obsoletis ; umbilico ad marginem 

 rotundato ; apertura obliqua, postice (aut supra) lata et recta, antice 

 (vel infra) fere uniforme angustatim rotundata ; labio tenui, plica 

 una parietali subcentrali instructo ; labro incrassato, externo paulo 

 arcuato, intus ad medium obsolete dentato, columellari rectiusculo, 

 supra medium distincte dentato. 



