DIPLOMMATINA. 313 



three last wliorl.s; si)ire atteimatt', sides flat; suture nind<'i-ate ; 

 whorls 84 to 9, the autepeuultiinate tlie l:irj;e>t; coustrict iun in 

 front above the aperture; last whurl ascends slightly; aperture 

 oval, vertical ; peristome double, thickened, slightly rejected ; 

 columellar tootli suiall and remote. 



" Alt. 0-22 [5-5 mm.] : diam. 0-13 inch [3-25 mm.]." 

 Huh. India: Kezakenomih, Naga llills [Godwin- Austen). 

 " Tliis shell is a better type of tiiis form of Di/dommatind than 

 the very tumid shell first described from Asalu ; the forui changes 

 much in different localities, in some being much more solid and 

 more distinctly and distantly scu]|)tured near the apex ; a variety 

 from the Eastern Burrail is 0"20" in alt., rich dark amber- 

 coloured, has the three lower whorls smooth and glassy, tlie 

 columellar tooth still more remote, and the constriction just 

 behind the peristome ; it departs so widely from the original type 

 that it might almost be separated." [God iv in- Austen.) 



478. Biplommatina exilis, lUanford. 



Diploinniatiud exilis, Blanford, J. A. 8. E. xxxii, 18(3.'5, p. 325; 

 IMeiffer, Mon. Piieuui. Suppl. 2, I860, p. 10; Godwiu-Austen, 

 .1. A. S.l>. xxxvii, 1868, p. 84, pi. 4, figs. 3, oa; Theobald & 

 Stoliczka, op. cit, xli, part 2, 1872, p. Sol ; Hanley & Theobald, 

 Conch. Iiid. 1875, p. 49, pi. 119, fig. 10; Theobald, Cut. Shells 

 ]{rit. India, 1876, p. 42; Nevill, Ilaml List, i, 1878, p. 284; 

 (iod win-Austen, Land & Freshw. Moll. India, i, 1880, ]>. 180, 

 pi. 49, tig. 1. 



Dip/ommatina (Eudiplonimalina) exilis, Kobelt & ^liilleudorff, 

 Nachr. Deuts. Malak. Ges. xxx, 1898, p. 136 ; id.. Cat. Pneuni. 

 1899, p. 50. 



DiploDtmatina {Dijjloiirnatina) exilis, Kobelt,DasTierreicb, Lief. 16, 

 1902, p. 432. 



Original description: — " Shell dextral, not rimate, very slenderly 

 subfusiform, rather solid, moderately, closely and oblii[uely ribbed 

 throughout. Spire turreted with straight sides, apex obtuse, 

 suture impressed. Whorls 7|, rounded, antepenultimate slightly 

 larger than the penultimate. Lower whorl rising a little near the 

 aperture, which is subvertical, slightly inclined downwards, 

 almost circular, the columeihir margin being straightened, termi- 

 nating in a riglit angle at the base, and bearing a moderate-sized 

 internal tooth. Peristome double, the inner lip being prominent, 

 slightly expanded, and continuous upon the penultinuite whorl, 

 but not forming a broad callus ; outer lip slightly expanded, 

 retro-relict. Opeir. ? 



"Alt. 3, diam. 1!-, diam. ap. ^' mm."' 



11(d). Burma : Mya Leit l)ouiig, Ava [Blanford). 



" The most slender species of the genus with which I am 

 acquainted, and easily distinguished from all others by its long 

 narrow form." [Blanford.) 



