170 L\ND AND FRESHWATER 
cavity. In D. pachycheilus the peristome is thickened and bifurcate 
at the insertion of the outer lip, and there is no remote varix ; 
while the incrassate columellar lip is reflected over the rimation, 
and entirely conceals it. The last whorl ascends more conspicuously 
in front than in D. pachycheilus, although it rises considerably also 
in that shell—a feature which I omitted in the description given in 
the ‘ Annals’ for 1857. The costulation of D. pachycheilus is very 
variable ; in some specimens it disappears on the lower whorls, in 
others on the upper ones only ; occasionally it pervades the whole 
surface.” 
It appears to be most abundant in the Western Bhutan Hills, 
judging from the numbers collected by Mr. W. Robert. 
DrIpLoMMATINA PULLULA, Benson. (Plate XLIX. fig. 12.) The 
specimen figured is from Mr. Blanford’s collection and the typical 
locality. 
Diplommatina pullula, Bs. A. M. N. H. 1859, vol. ni. p. 182; 
Godwin-Austen, Journ. A. 8. B. 1868, p. 83, pl. i. fig. 7; Pfr. Mon. 
Pneum. vol. iii. p. 9; Hanley, Conch. Ind. p. 49, pl. exix. fig. 7 ; 
Theob. Supp. Cat. p. 42; Nevill, Hand-list, p, 287. 
Original description :—‘ Testa imperforata, ovato-turrita, oblique 
confertim costulata, fulvescenti-albida, versus apicem rubella, spira 
subturrita, sutura impressa, apice obtusiusculo ; anfractibus 6-7 con- 
vexis, antepenultimo tumidiore, ultimo antice valde ascendente, costulis 
remotioribus irregularibus ; apertura subverticali, vie superne spec- 
tante, oblique obovali, peristomate duplici, interno porrecto expansius- 
culo, externo subreflexo, marginibus callo appresso expanso junctis, 
columellari verticali planato intus acute unidentato basi angulato- 
rotundato, deatrali valde arcuato. Opere. ts 
* Long. 3, diam. 13 mill. 
“« Hab. in valle Rungun, ad latus occidentale. 
‘In form and size between huttoni and folliculus, Pfr.; dextrorse 
like the latter, though agreeing with the former in haying the tooth 
apparent on the columellar lip... ..” 
DreLomMATINA HUTTONI, Pfr. (Plate XLV. figs. 7, 7 a, 7 6.) 
Locality. Mussoorie, N.W. Himalaya (G.-<A.). 
Diplommatina huttoni, Pfeiffer, P. Z.S. 1852, p. 157; Guppy, 
A. M. N. H. 1867, vol. xx. p. 95; Blanford, A. M. N. H. 1868, 
vol. i. p. 116; Pfr. Mon. Pneum. vol. i. p. 123; Kust. and 
Chemnitz, Cyclos. pl. xlvii. figs. 36, 37; Hanley, Conch. Ind. 
p. 55, pl. exxxix. figs. 5, 6; Theob. Supp. Cat. p. 42. 
Original description :—‘ D. testa sinistrorsa, subrimata, ovato- 
conica, eleganter confertim et oblique costulata, diaphana, albida ; 
spira conica, acuta ; anfract. 6, perconvexis ; apertura subcirculari ; 
perist. duplice, eapanso. 
“Dong. 2:5, diam. 1 mill. 
