30 



living in the seas round the coasts of China and Japan, but in the 

 modern form the whorls are not so much staged and the spiral 

 lineations are not so well marked ; the principal point of difference, 

 however, is the shape and shallowness of the posterior sinus. 



Dimensions. — Length 62 mm.; breadth 26 mm.; length of 

 aperture 52 mm. 



Form, and Loc. — Eocene (?) : Muddy Creek, Victoria. 



G. 4239. One example. Prese7ited hj John Dennant, Esq. 



G. 5494. One example. Purchased. 



Conus (Leptoconus) murravianus, Tate. 



1890. Conns mnrravianiis, Tate, Trans. Eoy. Soc. South Aust. vol. xiii. 

 pt. 2, p. 200, pi. vii. fig. 2. 



Protoconch (Plate II. Pigs. 4a^b) composed of three smooth 

 turns implanted obliquely with reference to the axis of succeeding 

 whorls; the initial portion is exceedingly small in comparison 

 with the anterior turns. These latter are depressed and deeply 

 canaliculated. The shell proper has an elevated spire with six 

 whorls, which are somewhat staged, slightly excavated ; and spiral 

 lineations are not prominent, except towards the anterior half of 

 the body-whorl. It is noteworthy that in the brephic stage the 

 periphery of the body-whorl was obscurely crenulated, a character 

 which disappeared, however, as the neanic period was reached. 

 Aperture narrow, slightly expanded in front ; outer margin thin ; 

 with a shallow posterior sinus. 



This species presents characters of no less than three subgenera : 

 by its very elevated spire and the obscure crenulations it recalls 

 Conospirus, which does not appear to stand on a very firm basis ; 

 its protoconch presents the features of Lithooonus as represented in 

 the Australian Tertiary by C. dennanti and C. piillidescens ; but 

 the general contour of the shell and the staged whorls reflect 

 Leptoconus, to which subgenus the species is here referred. 

 Specifically it has a near ally in C. hrocchii, Bronn, of the Italian 

 Pliocene. 



Dimensions. — Length 41mm.; breadth 16 mm. Professor Tate 

 records a length of 61mm. 



Form, and Loc. — Eocene : Eiver Murray clifPs, 



G. 9136. One specimen. Presented ly William Evans, Esq^. 



