330 Proceedings of the Royal Society of Victoria. 



Mr. Etheridge, Jun's. more copious synonymy in the Records of 

 the Australian Museum. 



The points of difference in our specimen consist in the greater 

 length of the cardinal line as compared with typical British speci- 

 mens^ ; in the strong and well-developed auricle at the anterior 

 end of the hinge-line ; and the sharper ridges, with pronounced 

 tubular spines, formed by the intersection of costae with lamellae, 

 especially towards the ventral margin. By Mr. Gabriel's donation 

 I am enabled to compare the specimen now figured with similar 

 fossils from Geraldton, which leads one to conclude that it is only 

 an extreme variety of C. pectiniformis. The specimens in the 

 Gabriel collection also show the variation in shell-sculpture in 

 this species, due to the condition of the shell in relation to its 

 preservation or decortication, the better preserved specimens 

 usually having sharply i-idged costte. 



Locality and Horizon. — Greenough River District, Western 

 Australia. Jurassic. [2063]. 



Astarte cliftoni, Moore. 



Astarte cliftoni, Moore, 1870. Quart. Journ. Geol. Soc, 

 vol. xxvi., p. 249, pi. xiii., tig. 10. 



A perfect specimen with united valves occurs in our series. 

 Moore records it from the same locality. 



Locality and ILorizon. — Greenough River District. Western 

 Australia. Jurassic. [2067.]. 



Ckphalopoda-Ammonoidea. 



Normannites, Munier Chalmas. 



Normannites australe, Crick sp. 



Ammonites macrocephalus, Moore (non Schlotheim), 1870. 

 Quart. Journ. Geol. Soc, vol. xxvi., pp. 227-232, pi. xv., tig. 5. 



Ammonites (Stephanoceras) australe, Crick, 1894. Geol. 

 Mag., Dec. iv., vol. 1, p. 391, pi. xii., tigs. 4a-4^ 



Our specimen is fairly well preserved, but incomplete towards 

 the extremity of the last whorl, and having the umbilicus filled 



1 Exemplified in the Wright collection of Oolite fossils in the National Museum. 



