PART 2 .] 
Hughes: Note on a trigi over ike Milam Pass, 
tJiough the species could not be determined, yet, by the association of the genera, 
indicate with great probability the cretaceous formation. I worked out of those 
rock specimens— 
“ Corlnda, sp., allied to, perhaps identical with, C. mncelKfera, Stol.; as, hovv- 
evei’, only one .specimen has been found, the determination could not be ma<le 
with sufficient certainty. 
“ Astarte, a middle-sized species, rather oblique in shape, with concentric folds 
near the apex, nearly smooth on the other parts of the shells; could not 
apparently be identified with any of the hitherto described species. This shell 
seems to fill whole beds with hundreds of specimens. 
“ Pectionculus, sp., a large, smooth, rounded shell, found among the 
The species could not be determined, but the occurrence of this genus together 
with a true Astarte indicates nearly with certainty cretaceous beds. 
“ Guc'ullaea, sp., fragmentary. 
“ Jurassic formation is rej)resented in the collection, by a tolerably 
Jurassic fossils large number of fossils, preserved much in the same way 
as those found in Spiti. 
“ I determined— 
Belemnites cf. kiinfkotensis, Waagen (fragments of the guard),- 
Oggelia acucincta, Strachey. 
Perisphindes frequens, Of)p. 
,, sp. (triplicatus, Stol. non Sow.) 
,, sahinuanus, 0pp. 
,, Stanley!, 0pp. 
„ sp. 
StepJianoaeras ? wallieJdi, Gray. 
Cosmoceras tlieodori, 0pp. 
„ odayoHus, Strachey, 
Aucella legwminosa, Stol. 
„ hlanfordiana, Stol. 
„ sp. nov. 
Peden, sp. 
Ehynehonella, sp. (varians, Blanf. non Schloth.) 
“ The genus to which Ammonites vjaUiohi, Gray, belongs is rather doubtful, as 
no sufficiently well-preserved specimen has been found to make this point certain. 
Perispliinctes Stanley!, 0pp., is a very good species, and easy to distinguish 
from Perisplmides cautleyi and spitiensis, with which it has been identified. 
The now Aucelta is a large rounded shell, with very few concentric strim, but it 
is represented only by a single specimen. Nevertheless I thought it worth 
mentioning; as the occurrence of a new (a third) species in the Himalayan Jura 
shows yet more clearly the intermixture of European and North Asiatic types in 
these Jurassic districts. In Kaehh already species of the genus Ancella are exceed¬ 
ingly scarce, whilst north of Milam some of the rocks are filled with hundreds of 
Aucella leguminosa.'’ 
Almost all the Jurassic specimens Just described are from the neighbourhood 
of Lapt61. They occur mostly in concretions, in dark-looking slightly carbona¬ 
ceous shales, that constitute the most distinctive rocks of the formation. At 
