Jurassic MoUuscafrom . 3 



regarded l)y that author as belonginj^ i^ Quenstedt's 

 own Jura " or the " Dogger," evidence which was con- 

 •ed at the time in favour of the Bihin Limestone being 

 ynized as of Bathonian age. Mr. C'rick's remarks, 

 : 2ver ([)p. 29G-298), on Belemmtes suhhastatus favoured 



■ Callovian age for this Hmestone, since that Cephalopod 



sa! i to be characteristic of the maci'ocephalus-zone of 



t a later period, during the discussion on a paper by 



Gregory "On the Geology and Fossil Corals and 



inids of Somaliland," read before the Geological Society, 



■ G. C. (Jrick stated that the Cephalopoda from the Bihin 

 1 .estone " appeared to indicate the presence of an horizon 

 ' ewhat younger than Bathonian" (Quart. Journ. Geol. 



■ . 1900, vol. ivi. p. 45). 



■ince the Bihin Limestone fossils were described, further 



cimens in the British Museum have been examined from 



same beds, although no published account of them has yet 



1 issued. Among these the following pi'ovisional deter- 



ations are now made : — Nerincea cf. elotior, Orbigny, a 



allian species represented by some narrow elongate natural 



:s ; VoJsella { = Modiola) subangustissima, Dacque, a form 



nd in the Kimeridgian of Western Somaliland (Atschabo) ; 



oladomya cf. carinata, Goldfuss, originally described from 



Callovian of the Sarthe region of France, and which has 



more modern years been recognized by Douvill^ as part of 



Jurassic (Sequanian) fauna of (5hoa to the south of 



yssinia ; Ceromya cf. striata, Orbigny sp. {=^ohovata, 



jmer, and injiata, Agassiz), belonging to Corallian and 



meridgian times, a species recorded by G. Miiller as 



urring in the Kimeridgian of German East Africa ; and 



y-ebratula sulsella, Leymerie, ranging from Corallian to 



meridgian, although perhaps more characteristic of the 



mer period, is known from the Kimeridgian of German 



malilaud through the researches of Dr. Dacqud, and ac- 



ding to Prof. Douville it also occurs in the Jurassic rocks 



Choa to the south of Abyssinia. 



The Spiti Shales. — Tlie palaeontology of the Spiti deposits 

 the ^Northern Himalaya appears to have been first made 

 own to us by Captain J. D. Herbert in 1831, who gave an 

 20unt, with a plate of figures, of a number of fossils that 

 d been collected in those beds by Dr. Gerard. Tiiis was 

 lowed in 1833 by a further notice of the same collection 

 itten by the Bev. R. Everest, accompanied by two plates 

 fossils. 

 Thirty years afterwards the Gerard collection was again 



* 



