1863. | On Dr. Gerard’s collection of Spiti fossils. 125 
a Liassic formation in the Spiti valley, in which, as in the beds of St, 
Cassian, certain Triassic forms were intermingled. The Upper Oolitic 
forms, I regarded (with doubt.) as indicating a distinct formation. 
The fossils I had examined comprised a majority of Cephalopoda, 
with a few species of Gasteropoda and Conchifera. The Brachiopoda 
which formed part of the original collection I had not been able te 
discover in the Society’s Museum. 
Mr. Theobald’s investigations have now established the existence 
of Triassic beds as well as those of Silurian and Upper Oolitic age, 
in the Spiti valley while the now proved spuriousness of the Liassic 
fossils described, eliminates this fauna from consideration. Further 
research in the Society’s Museum, has yielded me the Brachiopoda 
of Dr. Gerard’s collection and a number of other fossils, which, however, 
(with the exception of one or two ammonites) want of leisure at pre- 
sent compels me to defer for future examination. The former consist 
of Producta, Spirifer, Terebratula and Rhynchonella, some of them of 
Carboniferous age, but further than this I am not able to pronounce’ 
at present. This paper, therefore, confines itself to a description of 
the genuine portion of those species included in my original memoir, 
I have mentioned that while in England I had the opportunity of 
examining the valuable collection of Oolitic fossils made by Colonel 
Strachey at the Niti Pass in Kumaon, as well as those from northern 
Nepal collected by General Hardwicke, and M. Jaquemont’s collec- 
tion from Spiti. This has rendered an alteration necessary in the 
names of those species which also occur in the above collections and 
had already been named by authors or discoverers. ‘This has been 
effected in the present paper. 
Class. CEPHALOPODA. 
Order. DIBRANCHIATA. 
1. Brtemnires Suncatus, Miller. Plate I. figs. 1, 2a-e. 
This Belemnite is apparently identical with that occuring in the 
Oolitic rocks of Cutch, which has been described and figured by Mr. 
Sowerby, (Geol. Trans. 2nd Ser, Vol. V.) as B. canaliculatus, Schlot- 
heim. 
The Spiti specimens differ from those figured by Miller and 
D’Orbigny, in the guard being more compressed in form, so that the 
R 2 
