THE VICTORIAN NATURALIST. 179 



these particular specimens and their evidence, in the light of 

 our present knowledge. 



The fossils figured in the " Progress Report, Geol. Surv. Vict., 

 No. II.," p. 22, are : — ■ 



Lepralia stawellensis, M'Coy. (Fig. i.) 



Nucula marthcB, M'Coy. (Fig. 2.) 



Telliiia krausei, M'Coy. (Fig. 3.) 



Ditrupa wormbetiensis, M'Coy. (Fig. 4.) 



A repetition of M'Coy's original notes on these fossils will be 

 found in the " Schedule of Reports on Fossil Specimens " (No. 

 3.160), in the "Progress Report, No. IV.," p. 155. 



Casts of other fossils, chiefly bivalves, occur on the same slab, 

 some of which resemble Meretrix eburnea, Tate sp. 



Remarks on the Fossils. 

 Lepralia stawellensis, M'Coy. 



There is no descriptive information accompanying the figure of 

 this species. 



The fossil cast (of which fig. i is probably an attempted restora- 

 tion) is that of a foliaceous Lepralia, with zooecia arranged in 

 linear series. The surface of the zooecium is moderately convex 

 to nearly flat, and does not show the decidedly barrel-shaped 

 form seen in fig. i. I have compared this cast on the ironstone 

 block with actual Tertiary specimens of Lepralia in the Mac- 

 gillivray and Maplestone collections in the National Museum, 

 and also with those authors' published descriptions. The iron- 

 stone cast seems to agree in all its details, so far as they are 

 preserved, with Lepralia quadrata, Macgillivray sp. Another 

 form which bears a somewhat close comparison is L. quadratipihnc- 

 tata, Maplestone. It is, however, impossible to do more than 

 indicate its affinities. To attempt the identification of fossil 

 polyzoa by their casts is extremely risky from a scientific stand- 

 point. Mr. C. M. Maplestone has been kind enough to examine 

 this fossil cast, and agrees with me in the conclusion that the 

 species L. staivellensis is not valid, since it was based on insuffi- 

 cient material. 

 Nucula MARTHiE, M'Coy. 



Respecting this fossil, M'Coy remarks that it is " an extinct 

 species common in the Oligocene Tertiary beds between Mount 

 Eliza and Mount Martha." 



The figured specimen is an internal cast, and consequently 

 the surface-sculpture of the shell is not seen. Fig. 2 of the wood- 

 cut in the " Progress Report " appears to be a restoration of this 

 cast, based on a fossil shell very like the Leda ajnculata of Tate, 

 a species which occurs commonly in the Balcombian series of 

 Mornington and Muddy Creek. 



In outline the cast, which for comparative purposes is not very 

 perfect, is, by its elongated and compressed shape, nearer the 



