BY R. ETHERIDGE, JUNR. 533 



with De Koninck's figure, PI. 17, f. 3, except that the posterior 

 hinge line has a less elevation, and the cincture is less obliquely 

 directed. 



I was for a long time in doubt as to the generic identity of 

 this and similar other bivalves found in the Permo-Carboniferous 

 rocks of Eastern Australia, and for the want of a better resting 

 place referred them to Meek's genus Chcnvomya. This group of 

 shells is in accord, with the diagnosis of the latter, in every 

 particular but two — the presence of the cincture, and the " broad 

 shallow sinus " of the pallial line. The former point is not, from 

 its variability in this group, one of much moment, and even the 

 pallial line of our shells may be very openly sinuate, but is so 

 faintly impressed that it is difficult to distinguish it. At the 

 same time the posterior gape of the valves would lead one to 

 expect a sinupalliate character. Should any other observer be 

 in a better position to demonstrate the generic relations of 

 Chcenomya ? Etheridypi, and its allies, more correctly, I am quite 

 open to conviction. Perhaps, after all, as in so many other cases 

 in Australian Palaeontology, a new generic name will be the more 

 appropriate course. 



The presence of the cincture indicates an alliance with Grmn- 

 mysia. 



Loc. and Horizon. — Woodleigh Creek, one and three quarter 

 miles above Bent's Farm (W. If. Kands, Colin. Geol. Survey 

 Queensland, Brisbane). 



Genus — E D m o N D i A, De Koninck, 1842. 



(Descrip. Anim. Foss. Ten\ Carb. Belgique, 1842, p. <6Q.) 



Edmondia 1 Smithii, sjj.nov. 



(PL XXXIX. fig. 6.) 



Undescribed Bivalve, Geol. Pal. Q'land and N. Guinea, Arc, 1892, 

 t. 39, f. 8. 



Sp. Char. — Shell ovate-oblong; valves more or less compressed. 

 Hinge line or cardinal margin straight, shading oif posteriorly 



