Dipr.0M>rATi>j'A. 321 



Dtplommatina {Eudiplummatina) jatingann, Kobelt & Miillendorif, 

 Nachr. Deuts. Malak. Ges, xxx, 1898, p. 137 ; id., Cat. Pueum. 

 1899, p. 57. 



Diplommatina {Diplommathid) jatiiirjana, Kobelt, Das Tierreicli, 

 Lief. 16, 1902, p. 4:36. 



Original descri/Uion : — " Shell dextral, ovate fusiform, solid, 

 pale corneous ; specimens, when young, often of a bright sienna, 

 diaplianous; rather finely and sharply costulated on the four 

 whorls near the apex, becoming fainter below, and from the ante- 

 penultimate to the body whorl almost smootli, or with onlv a i'aint 

 trace of ribbing; spire conic, sides flattened, apex rather acute, 

 suture slightly impressed below ; whorls 7g, the ante-penultimate 

 the largest ; penultimate whorl slightly constricted at J turn 

 behind the peristome, last whorl ascending chiefly behiiid the 

 constriction ; aperture sub-vertical, broadly euriculate ; peristome 

 solid, double, columellar margin straight, right-angled at base; the 

 usual tooth, large, coarse and blunt, souietimes descending ; lips 

 very slightly expanded, outer more so than the inner, this last 

 contiiuious, forming a strong callus upon the i)enultimate whorl. 

 " Animal pale, almost coloui'less, tentacles brovrn, labial ribbon 

 long and tapering. 



"Height 4 mm.; diameter 2i mm.; diameter of aperture 

 1 mm." 



Hah. India : hill at the junction of the Kayeng and Jatinga 

 Rivers, N. Cachar Hills (Godivin- Austen). 



" This is a very handsome and peculiar species, and one of tlie 

 largest 1 have obtained in these hills ; it was only found on the 

 above isolated hill, where it was abundant. I have named it after 

 the large river, the Jatinga, that flows below. The species is 

 neai'ly allied to D.hlanfordiana and D.semiacidjUa: it is, however, 

 somewhat more tumid, and has shallower sutures than either of 

 these forms ; and while it has not the distant retro-relict peri- 

 stome and rimation of the former, it appears to be less sharply 

 angulated at the base of the peristome than the latter. But the 

 most distinctive character is the position of the slight constriction 

 of the penultimate whorl which, instead of being in front of, or 

 above, the aperture, as in D. blavfordiana, D. semiscidjJta , and 

 D. pachi/cheilns, is at a considerable distance, about | turn behind 

 it. Hence the suture of the last whorl rises rapidly behind the 

 constriction, runs for a short distance in front of it parallel \\ ith 

 the preceding suture, and finally again ascends to the margin of 

 the peristome." i^Godnnn-Aiisten.) 



492. Diplommatina labiosa, Blanford. 



Uiplvininafind lahinsa, P>lanford, .1. A. S. B. xxxvii, 186S, p. 80, 

 pi. 2, tigs. 3, ort; Pfeiffer, Mon. Pneum. Siippl. 3, 1875, p. 7(5; 

 llanley & Theobald, Conch. Ind. 1875, pi. 119, fig. 9: Theobald, 

 Cat. Shells P.ril. India, 1876. p. 4l> ; Xevill, Hand List, i, 1878, 

 p. 28G. . 



y 



