J^otes on the Lily dale Limestone. 43 



like the Cycloneinas of this Ibi'iuatiou, wliieh it very much 

 I'esembles, only that the s])ire is more elevated. In typical 

 Eiuiemas, according to Nicholson, " the whorls are more or 

 less angular, and tlie surface is often adorned with elevated 

 spiral ribs." In our Eunenia, however, the whorls are 

 lounded like those of Cyclonema, and ai-e traversed with 

 spiral keels, but more numerous and less distinct than in 

 C australis, and C. lilydalensis. There is also an indistinct 

 appearance of a spiral band about the middle of the whorls. 

 C. etheridgei is like "E. cirrhosa" of the English Wenlook, 

 as figured in Murchison's Siiuria, but has much more 

 numerous keels. I have taken the liberty of naming this 

 shell after the celebrated Palseontologist of New South 

 Wales, who has taken so warm an hiterest in our Victorian 

 fossils, and which I hope may be still continued, notwith- 

 standing the fact that he is an outsider and lives across the 

 border. 



The few other shells which I take to be new, shall be passed 

 over with but very slight notice, as time hastens, and there 

 are three other papers to follow. One is a gasteropod 

 shell, a Stomatia, which I have called " Stomatia antiqua," 

 because, as far as I am aware, it is the oldest Stomatia upon 

 record. The whorls are somewhat steeper in the sides, and 

 more flattened than Stomatias usually are, and though the 

 spn-e is bioken off in the only specimen I have, it must 

 have been higher than is usually found in that genus, but 

 in all other I'espects the appearance of the shell is that of a 

 " Stomatia." The whorls are diagonally crossed with very 

 numerous lamella;-like lines of growth. The shell is one 

 and a lialf inches long, and one inch wide. Then thei'e are 

 two small species of " Pleurorhyncltus, or Conocardium " — 

 lamelli-branchiate shells belonging to the Cardiidie, one 

 about half-an-inch long, with nine simple ribs on the 

 anterior part of each valve, and about seventeeL on the 

 hinder part, and which I have called '' Pleurorltynchus 

 costatus." And the other species is about one-third of an 

 inch long, with the body of the shell more oblique to the 

 hinge line, more prettily banded and ribbed than the other 

 species, the ribs being crossed with striaj, and the valves 

 having a distinctly fenestrated appearance at the posterior 

 end. This I have accoi-dinglj^ named " FleurorhyncJtus 

 helluhis." 



There are two other shells that I have not figni-ed on 

 that diagram, but have here to show j'ou. I will pass 



