62 LAURIA. 



In a specimen from Jickeli (pi. 8, fig. 20), length 3.3, diam. 

 1.6 mm., the contour differs somewhat from dadioii, the latter 

 being wider below. 



9. Lauria desiderata (Preston). PI. 8, fig. 16. 



Shell small, turbinate, with very obtuse apex, reddish 

 brown ; whorls 5%, rather slowly increasing, moderately con- 

 vex, the last ascending in front ; suture well impressed ; um- 

 bilicus broad, somewhat deep, partly concealed by the re- 

 flexion of the columellar margin; columella descending very 

 obliquely, bearing rather interiorly a single plait, labrum 

 whitish, sinuous, reflexed, projecting inwardly at a point 

 some little distance below its junction with the parietal wall, 

 which bears a weak, very oblique lamella; aperture irregu- 

 larly quadrate. Alt. 3, diam. maj. 2 mm. ; aperture, alt. .75, 

 diam. .5 mm. (Preston). 



British East Africa : Mount Kenia, at an altitude of 9,000- 

 10,000 feet. 



Jaminia desiderata Preston, Ann. Mag. N. H. (8), vii, May 

 1911, p. 470, pi. 11, f. 21. 



If this is a Lauria, as I suppose, the angular lamella is 

 rather more removed from the lip-insertion than usual, much 

 as in L. bourbonensis. 



10. Lauria bourbonensis n. sp. PI. 8, fig. 19. 



The shell is cylindric-ovate with obtuse summit, minutely 

 perforate, rimate, brown, slightly translucent, somewhat 

 glossy ; very finely but obsoletely striatulate. Whorls not very 

 convex, the last rounded below, compressed within the um- 

 bilical region. Aperture ovate, truncate. Peristome pale 

 brown, very narrowly reflected, thin, very slightly thickened 

 within. Angular lamella very thin throughout, slightly higher 

 near the outer end, which falls short of the edge of the thin 

 parietal film, and is some distance from the lip -insertion, but 

 connected therewith by an extremely low callous ridge, hardly 

 discernible except in the oldest examples. Inwardly the an- 

 gular lamella penetrates as a whitish thread about a half- 

 whorl — at least as far as can be seen in the mouth. Colu- 



