MpLomm.vtIna. 



B43 



aperture vertical, oval : peristome double, strong, broadly ovate ; 



folumellar margin ueark vertical, with a strong tooth. 

 " jNInjor diaiii. 0-9 : alt. axis I'o mm." ( God wiii- Austen.) 

 Hab.' India : Miri Hills {Officers, Miri Mission, I'jl 1-1912). 



528. Diplommatina niucronata, Godwin-Austen. 

 Diplommatina mucronatus, (iudwin-Austen, Itec. liid. Miis. \iii, 



1917, p. o76, text- fig. 4 b. 



Original description: — "Shell ovately acuminate, rimate ; 

 sculpture regular, somewhat distant costulatiou on the 4th and 

 5tli whorls, becoming finer and closer on the two last, the first 2 

 whorls smooth ; colour white; spire pyramidal, becoming rapidly 

 attenuate, apex fine, blunt; suture well impressed; whorls 7, 

 penultimate tlie largest, sides rt-ell rounded, tumid; aperture oval, 

 subvertical; peristome well thickened, distinctly double. 



"Major diam. 2-5 ; alt. axis 4-75 mm." {Godivin- Austen.) 



Hah. India : Changjuk La, Tsanspu Valley. 



529. Diplommatina nengloensis, Godwin- Austen. 

 Diplommnti7ia yiengloendi, Godwiii-Austeii, Proc. Zool. Sdc. 1892, 



p. 514 ; id., Land & Freshw. Moll. India, ii, 1897, p. 10, pi. 65, 

 tigs. 3, -J a. 

 Diplommatina (Metadiancta) nenf/loensis, Kobelt & MollendorfE, 

 Nachr. Deuts. Malak. Ges. xxx, 1898, p. 139 ; id.. Cat. Pneum. 

 1899, p. 59 ; Kobelt, Das Tierreich, Lief. 16, 1902, p. 451. 



Original description :— " Shell dextral, elongately fusiform, 

 large, solid; sculpture very fine, moderately distant ribbing; 

 colour pale ochraceous ; spire high, with flat sides, apex acuminate ; 

 suture shallow ; whorls 8|, sides flatly convex ; constriction some 

 distance behind the aperture, on side; aperture wddely ovate, 

 expanded towards the outer margin; peristome double, not 

 thickened; columellar margin subvertical, the tooth very small 

 and remotely situated. 



"Major diam. 2-9 ; alt. axis 5 niillim." 



Hah. India: Nenglo, North Cachar Hills (G^of?wi)i-.I us^e?i)- 



" This is a very distinct shell ; in its very ovate aperture and 

 small columellar process or tooth it is unlike any other I have in 

 my collection." {Godwin-Austen.) 



530. Diplommatina perobesa, Preston. 



Diplommatina perobesa, Preston, Rec. Ind. Mus. viii, 191_5, 

 p. 540, text-tig-. 5; Godwin-Austen, torn. cit. 1918, p. 570, 

 text- tigs. 5, 5 rt. 



Original description:— ''^\\e\\ obUquely ovate with exserted 

 spire, pale flesh colour, solid, opaque ; whorls 7, the first two 

 submammillary, the third, fourth, and fifth regularly increasing,the 

 sixth large, tumid, tlie last coutracled and abandoning the direction 

 of the axis oi the shell, sculptured with coarse, obsolete, oblique, 



