112 MEMORANDUM ON THE 



The Terebratula, if not identical in species with those of Mr. 

 Caldee, from the lower Oolite, is very similar to them, and totally 

 unlike any from the newer formations. 



The Pectens, at least the larger variety, do not appear to differ from 

 the common Scallop which is found recent. 



The shell I have called Trigonia, cannot be compared with any fossil 

 specimens we have. The genus is, with one exception, a fossil one. 



t The generic characters of the Area and Modiola, are tolerably well 

 marked ; but we have neither plate nor specimen from which to identify 

 the species. They are not, however, important. 



The testudinous remains seem to point to the Lias, or some of the 

 secondary strata, that being the deposit in which the remains of reptiles 

 occur most abundantly. In strata more ancient than that, they are nearly 

 (if not quite) wanting. It is to be hoped that the spot where these two 

 fragments were found, will be again diligently searched — we must forbear 

 from indulging in too sanguine anticipations — but such a search can hardly 

 fail of rewarding us with some interesting discoveries. 



Now, if we consider the Orthoceratite and Producta, as peculiar to 

 one formation, and the rest of our specimens to another, (the Terebratula, 

 perhaps, being common to both) and compare them wdth the list of Lias 

 fossils, we have, — of Chambered Univalves — two genera the same, out of 

 four ; viz. Ammonites and Belemnites — of Bivalves, four genera the same 

 out of eighteen ; viz. Terebratula, Pecten, Area, Modiola. We may 

 now then consider this position as established. That there exist, in the 

 Himalaya i^ange, strata analogous to the early secondary and transition 



