328 Proceedings of tJie Royal Society of Victoria. 



This species, which was originally recorded from Western 

 Australia, is represented by three specimens in the present collec- 

 tion. Two of these are rather young valves, the third is an adult 

 form with the concentric ridges less prominent and, perhaps, 

 partly worn down. 



As an additional instance of the affinity of the Indian with the 

 Australian Jurassic fossils, attention is drawn to the remarks by 

 Dr. F. L. Kitchen respecting Trigonia dhosaensis. Referring to 

 the relatively coar.se, raised ornaments on the marginal carina, 

 corresponding in number to the ribs of the flank, he says : — " It 

 is M noteworthy fact that this feature is well developed also in 

 T. moorei, Lycett, from Western Australia, to which T. dhosaensis 

 shows other such striking points of re-semblance as to suggest 

 near aflinity."^ 



Locality and Horizon. — Greenough River District, Western 

 Australia. Jurassic. [206-l:-6.]. 



Pecten, O. F, Miiller. 

 Pecten cinctus, Sowerby. 



Pecten cinctus, Sowerby, 1823. INIin. Conch., vol. iv., p. 96, 

 pi. 371. 



Moore, 1870. Quart. Journ. Geol. Soc, vol. xxvi., pp. 231, 232. 



This is one of the fossils recorded by Chas. Moore, of Bath, 

 England, from We.stern Austivalia, and which is well-known as 

 an English Inferior Oolite fossil. 



The solitary specimen of P. cinctus, in the Daintree and 

 Gregory collection from the Greenough River District, is 

 imperfect. Quite lately, however, the collection of Western 

 Australian fossils in the Museum has been enriched by the 

 donation of a series of Jurassic fossils from Geraldton, by Chas. 

 Gabriel, Esq., which includes four specimens of this particular 

 shell, thus enabling one to make a more satisfactory comparison 

 of the Australian with the British examples. 



When complete, the specimen from the Daintree and Gregory 

 collection must have been about 16cm. in width ; one example 

 in the Gabriel collection measures even slightly more than that. 



1 Mem. Geol. Surv. India (Pal. Indica), ser. ix., vol. 3. pt. 2, No. 1, 1903, p. 113. For 

 detailed comparison of the two species above-mentioned, see p. 31. 



