1863. | On Dr. Gerard's collection of Spiti fossils. 135 
Unio? Everest, As. Res. Vol. XVIII. Part 2, p. 114, Plate II. 
figs. 26, a, 6, c. 
Astarte planata, Sowerby, Op. cit. p. 278. 
Astarte major, Sowerby, Geol. Trans. 2nd series, Vol. V. Plate 
LXI. fig. 1. 
This species, three specimens of which oceur in Dr. Gerard’s col- 
lection, is undoubtedly identical with the Cutch species named as 
above by Mr. Sowerby. The specimens are smaller than those from 
Cutch, but in form, only differ in that the anterior end is less trun- 
cated, and the length of the shell is somewhat less proportionally, 
than in the specimen figured in the Geological Transactions, which is 
stated to be somewhat wider (7. e. in the present terminology, long- 
er) than the average. The measurements of our largest specimen 
are as follows :— 
Length 2 inches 3 lines. 
Height; Lanch)i%on), 
Thickness 1 
9 
20. CYPRINA? TRIGONALIS, n. s. Plate IV. figs. 4, 5. 
C, testa trigono-cordiformi, crassa, sub-inflata, striata, anticé ro- 
tundata, posticé angulata, obtusé carinataé. Area posteriori levigata. 
Umbonibus prominentibus. 
Length J inch. 
Height 10 lines. 
A small trigonal shell, chiefly occurring as casts, and of somewhat 
doubtful genus. It is associated with Avicula echinata in sandstone. 
21. NuvucULA CUNEIFORMIS, Sowerby. 
Modiola. Herbert, Glean. in Science, Vol. I1I. p. 272, Pl. XVIT. 
figs. 5a, 5, ec. 
Modiola. Everest, As. Res. Vol. XVIII. Part 2, p. 114, Pl. II. 
figs. 28, a, b, e. 
Nucula. Sowerby, As. Res. Vol. cit. p. 275. 
Nucula cuneiformis, Sowerby, Geol. Trans. 2nd Series, Vol. V. 
Plate XXII. fig. 4. 
Most of the specimens of this shell are much crushed, and the 
valves being united, do not admit of examination of the hinge. A 
small cast, however, apparently identical, but probably from a differ- 
ent bed, shews that the shell is, as surmised by Mr. Sowerby, a Ww- 
