14 TESTACELLID.E. 



a". Peristome continued by a thiclc lip, bearing a single re-entering 

 Y-shaped lamella, across parietal margin. 



25. Streptaxis personatus, Bif. J. A. 8. B. xlix, pt. 2, 1880, p. 202, 



pi. 2, %. 10. 



Shell umbilicated, smooth, pale yellowish white ; spire depressed ; 

 whorls 5, slightly convex above, the penultimate rounded, scarcely 

 projecting beyond the last, which is slightly compressed around 

 the umbilicus, constricted and pitted behind the mouth ; aperture 

 semioval ; peristome thickened and expanded, continuous across 

 the last whorl, with a deep sinus at the angle and furnished inside 

 with a thick parietal lamella, two teeth inside the outer, and three 

 in the columellar margin, the lower and larger of the teeth inside 

 the outer border opposite to top of the parietal lamina. 



Length 5, breadth 4, height 2| mm. 



A larger variety, 6| mm. long, has only three or four teeth inside 

 the peristome, not counting the parietal lamella. 



flab. Hills near Cum bum, Madura, South India ; Peermede, 

 Travancore; Shevroys (Beddome). 



26. Streptaxis pronus, Bif. J. A. S. B. xlix, pt. 2, 1880, p. 204, pi. 2, 



fig. 12. 



Near 8. personatus, but costulately striated above, and with the 

 last whorl very excentric, the penultimate, when seen from below, 

 projecting by more than half its breadth ; whorls 5|, penultimate 

 rounded, last whorl somewhat flattened beneath, sharply compressed 

 around the umbilicus, subcostulate within ; aperture elongate, 

 truncately oval ; peristome white, expanded, with 4 teeth, 1 colu- 

 mellar, 1 basal, and 2 in outer margin, besides the parietal lamella, 

 which is curved within and subbifid in front ; the sinus at the 

 angle of the peristome well marked, but much less deep than in 

 S. personatus. 



Length 6|, breadth 4, depth 3 mm. 



Hob. Hills near Tinnevelly, 8. India (Bcddome). 



B. Penultimate whorl carinate. 



*27. Streptaxis elisa, Gould, Proc. Bost. Soc. N. H. vi, 1856, p. 13 ; 

 Pfr. Mon. Hel v, 1868, p. 448. 



Shell of moderate size, much distorted and compressed, finely 

 striated above, smooth beneath and broadly perforated ; spire 

 discoid ; whorls 7J, angulate near the deep suture, the last very 

 much extended laterally ; aperture transverse, subquadrate ; peri- 

 stome everted, armed inside with 4 teeth cruciformly disposed, a 

 small fifth posterior tooth being sometimes added. 



Length half an inch (12| mm.), height one quarter inch (6 mm.) 

 (Gould, Lat.). 



Hab. An island in the Mergui Archipelago (Rev. J. Benjamin). 



