132 Proceedings of the Royal Society of Victoria. 



descriptions as referred to above, and in the absence of sufficient 

 material I am unable to speak very definitely, but am somewhat 

 inclined to think that this is hardly a valid species, and that it 

 may prove to be but a vai'ietal form of C. oblonga, T. Woods. 



109. Mytilicardia platycostata, R. M. Johnston. 



M. platycostata, R. M. Johnston, P.R.S.Tas., 1879, p. 40. 

 M. platycostata, Tate, Lam. T., 1886, p. 150. 



110. Cardita gracilicostata, T. Woods. 



C. graciltcostata, T. Woods, P.R.S Tas., 1876, p. 112. 



C. grucilicostata, Tate, Lam. I., 1886, p. 152, pi. ii., figs. 6, 8. 



Observations. — This species was recorded by Mr. J. Dennant 

 in 1888 as occurring in the older beds at Muddy Creek, Victoria 

 [T.R.S.S.A, vol. xi., 1888, p. 50] ; subsequently Mr. T. S. Hall 

 and I recorded it in our paper on the Older Tertiaries of the 

 Southern Portion of the Moorabool Valley [P.R.S.Vic, vol. iv., 

 n.s.], the identification being made for us by Mr. Dennant. 

 Upon looking up the Moorabool Valley specimens so-named, I 

 find that they were wrongly identified, and ought to have been 

 regarded as C. polynema. In view of this I cannot but feel some 

 doubt about the Muddy Creek record, which should, I think, be 

 further confirmed or else withdrawn from the lists. It is satis- 

 factory, however, that I am now in a position to record the 

 occurrence of typical examples of C. graciltcostata from the 

 eocene beds at Birregurra, whence it was obtained in material 

 kindly forwarded to my friend Mr. T, S. Hall by Mr. Alex. 

 Purnell. Having before me undoubted examples of the species 

 from Table Cape, its type locality, and having made careful 

 comparisons to the minutest detail between these and the 

 Birregurra shell, I have no hesitation whatever in giving this as 

 the only Victorian locality as yet known to me. 



HI. Cardita scabrosa, Tate. 



Id., Tate, Lam. I., 1886, p. 152, pi. ii., fig. 4. 



Observations. — The validity of this species is, I tliiiik, a matter 

 of extreme doubt, and further investigation may prove that it is 

 but a small form of C gracilicostata, T. Woods. jNIy attention 



