MOLLUSCA OF INDIA. IW ez 
Diplommatina polypeuris, var., Nevill, Hand-list, no. 11, p. 285 
(from Dafla Hills); = minuta. 
Diplommatina polypleuris, var., Nevill, Hand-list, no. 11, p. 285 
(from Sandoway and Nattoung), ? n. sp. 
Original description :—‘‘ Testa dextrorsa, non rimata, oblongo- 
ovata, confertim oblique chordato-costulata, pallide carnea, apice 
obtusiusculo, hyalino, sutura profunda ; anfractibus 6 conveais, ante- 
penultimo tumidiusculo ; apertura verticali, subcirculari, dente colu- 
mellari munita ; peristomate duplict, interiort expansiusculo, externo 
expanso, ad basin sinistram angulato-rotundato, callo parietali me- 
diocri, appresso, Opere. ? 
** Long. vix 2, diam. 1 mill. 
“‘ This little species was found by Mr. Theobald at Nanclai Ponji, 
forty-five miles from Cherra, in 92° 30’ EK. and 25° 15’ N.” 
Dietommatina AusTENI, W.T. Blf. (Plate XLV. figs. 2, 2 a.) 
Locality. North Khasi. 
Diplommatina austeni, W.'T. Blanford, J. A. 8S. B. 1868, p. 5, 
pl. iu. fig, 2. 
Diplommatina austent, large var., Godwin-Austen, J. A. S. B. 
1876, p. 178, pl. vii. figs. 8, 8a (is distinct); Hanley, Conch. Ind. 
p. 49, pl. exix. figs. land 4; Theob. Supp. Cat. p. 41; Nevill, Hand- 
list, p. 286. 
Original description :—‘“ Tvsta dextrorsa non rimata, conico-ovata, 
albida vel succinea. Spira superna conica, non attenuata, sutura im- 
pressa, apice obtusiusculo. Anfr. 6, primi 3 gradatim crescentes, 
confertim minute costulati, ultimi lavigati vel costulis subobsoletis 
signati, antepenultimus major, ultimus aliquando lineis subdistantibus 
versus aperturam signatus, antice ascendens, subtus rotundatus. 
Apertura verticalis oblique subovalis ; perist. incrassatum, mediocriter 
expansum, duplex, margine columellari verticali, angulo aperto subtus 
desinente, basalt rotundato, plica columellari mediocri, callo parvetali 
eax panso. 
se Long. 23, diam. 1 mill. ; apertura e perist. 14 mill. longa, intus 
5 lata. 
“« Hab, Cherra Poonji et Maotherichan in montibus Khasi (W. 
Theobald et Godwin-Austen). 
‘«T some years ago received a specimen of this species from Mr. 
Theobald as D. polypleuris, Bens. On comparing the series of 
Diplommatine collected by Captain Godwin-Austen with Mr. Ben- 
son’s description, it is evident that the type of that species belonged 
to a different form, found abundantly by Captain Godwin-Austen 
with the present species on the Maotherichan ridge, part of the 
northern scarp of the Khasi Hills, and distinguished from the pre- 
sent form by its much stronger sculpture, less conical spire, deeper 
suture, and rounder mouth. It is asmaller form. Mr. Theobald’s 
type specimens of D. polypleuris were from Nanclai, also on the 
northern portion of the Fhe nlateau. D. austens varies con- 
