286 PLEUROTOMARIA. 



Haliotis mooraboolensis, M'Coy. 



1876. Haliotis mooraboolensis, M'Coy, Prod. Pal. Vict. dec. iii. p. 25, 



pi. XXV. figs. 3-34. 

 1878. Haliotis mooraboolensis, R. Etheridge, jim., Cat. Aust. Foss. p. 164 



This species differs from S. nmvosoides, principally in being 

 less corrugated on the surface, the radiating ridges being absent, 

 spiral sulci or ribs being more prominent, regular, and evenly 

 disposed over the whole surface ; the shell is much larger, -whilst 

 the numerous apertures are placed nearer the periphery. 



It is allied to S. scalrtcosta and S. roei, living in Australian 

 waters. 



Dimensions. — Maximum diameter of surface 58 mm. ; minimum 

 diameter 45 mm. 



Form, and Loc. — Miocene : (? locality), Victoria. 



G. 1934. Internal cast of specimen having much depressed 

 spire, and the perforations are not so near the periphery as in 

 the specimen figured by Sir P. M'Coy. Purchased. 



Family PLEUEOTOMAEIIDJE. 



Genus PLEUROTOMARIA, J. Sowerby. 

 [Min. Conch, vol. iii. 1821, p. 139.] 



Dr. Dall ^ has shown that the name Pleurotomaria should be 

 attributed to James Sowerby, and not to Defrance, to whom it is 

 usually assigned by authors. 



Type. — Trochus gihsi, Sowerby. 



Pleurotomaria, sp. 



G. 9667. Example, 3 inches in length and 5J inches in 

 breadth, of a species that may be attributed to this genus. The 

 greater part of it, however, is merely an internal cast, and the 

 remains of the shell are too imperfect for detailed description. 

 The comparatively uncrushed shell of the earlier whorls exhibits 

 the characteristic filled sinus. From the Tertiary of Ardrossan, 

 Yorke's Peninsula, South Australia. H. Y. L. Brown Coll. 



1 Bull. Museum Comp. Zool. Harvard, vol. xviii. 1889, p. 396.] 



I 



