Fossil F/sh RriiKtiils. 61 



lian Tertiary Fauna."'- Two species of the g-enus have also 

 been recorded by Messrs. J. Dennant and A. E. Kitson in their 

 "Cataloirue of the Described Species of Fossils in the Cainozoic 

 Fauna of Victoria, South Australia and Tasmania,"'- namely, 

 M. toliapica Ajjassiz (from Beaumjwis), and M. plicatilis 

 D;if\'is (from Table Cape). Mr. Dennant,'' with whom we have 

 conferred respectinp- these fossils, is unable to <i'ive us any 

 definite information as to the ori<rinal identification of the fossils 

 referred to, but they were presumably identified by Prof. Tate. 

 Our specimens from Beaumaris are distinct from M. toliapica in 

 their shorter lateral dimension, but since the latter species is in 

 other respects fairly closely allied, it is probable thart; the earlier 

 Victorian record of M. toliapica was based on an imperfect com- 

 parison of M. moorabbinensis. The Table Cape specimen is not 

 available for comparison. 



M. moorabbinensis appears to differ from our living forms by 

 beina' much smaller and of a more slender character. These 

 features seem constant, judgintr by their uniformity in the frag- 

 mentary remains hitherto obtained. 



Order Ciiim.\kroidki. 



Family Cluinaeridae. 



Genus Edaphodo)i, Buckland. 



Edaphodon sweeti, sp. nov. (Plate V., Figs. 4-6.) 



Description. — Mandibular teeth robust, with 5 tritors. and a 

 prominent and rather sharp beajk. In its structure, the beak 

 tritor is laminated in front to half its length, and tubulated be- 

 hind : the tubules follnw the direction of the laminae, and are 

 obliquely arranged along the oral margin. The remaining tri- 

 tors have a fine, conspicuous, tubulated structure. Median tri- 

 tor very large, strongly convex, elongately triangular, and 



1 Jour. Koy. Soc. N.S.W., vol. xxii., pt. 2, 1888, p. 247. 



2 Records Geol. Surv., Victoria, vol. i., pt. 2, 1903, p. 94. 



3 Since writing: the above, we iiave heard with much regret of the decease of this widely 

 known tceolonist, who has done so much to farther the study of our Victorian Tertiary 

 faiuia 



