328 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [April 24, 



Edmondia cokcentrica, Ether. PL XIII. fig. 2. 



SheU oblong, apparently eqnivalve, postero-dorsal margin convex, 

 antero-dorsal steeply inclined from umbo to anterior slope; umbones 

 small, indistinct ; surface with numerous concentric and imbricated 

 lines of growth in band-like zones ; posterior side acutely rounded; 

 anterior obtusely rounded or truncated. 



Obs. Edmondia is a convenient genus to which we may refer these 

 Myacitiform shells, especially when no true sheU- structure occurs 

 upon them ; and in this genus I place the above shell. We are pre- 

 vented from seeing the large oblique cartilage-plates beneath the 

 umbones, owing to the matrix. The genus SanguinoUtes, M'Coy (in 

 part), receives some Edmondiiform shells ; but the general form and 

 aspect of our specimen precludes it. I figure it, like many other 

 forms, to draw the attention of Australian geologists to the LameUi- 

 branchiata of the Palaeozoic rocks of Queensland and elsewhere 

 through the colony, in the hope that search may be made for more 

 perfect specimens. 



Log. Gympie. Form. Devonian. 



Edmondia obovata. Ether. PL XIII. fig. 3. 



Shell ovate, anterior margin convex, or nearly circular ; posterior 

 margin slightly truncated; hinge-line nearly straight; umbones small, 

 close to anterior side ; ventral margin almost parallel with dorsal ; 

 outer shell wanting, but appears to have been concentrically banded. 



Obs. 1 place this shell in the above genus, although it may be a 

 Myacites ; but the want of outer shell to show whether granulated 

 or not, prevents our determining this point. Pullasti'a ovalis, M'Coy, 

 and Edmondia ? compressa, M'Coy, from the Carboniferous series of 

 Ireland, much resemble this species in form, especially the former ; 

 our shell is from the " fossiliferous greenstone " of I3eehive Reef, 

 Gympie, and, from the associated Mollusca, is probably of Devonian 

 age. 



Log. Gympie. Form. Devonian. 



•^ Productus CORA, D'Orb. PL XY. figs. 1 & 2. 



Ref. Paleont. du Yoyage dans I'Amerique Meridionale, t. 5. figs. 

 8-10; Dav. Monog. Brit. Carb. Brachiop. (Pal. Soc), p. 148, t. 36. 

 fig. 4, t. 42. fig. 9. 



This well-known British and European Carboniferous shell has 

 great range both in time and space, occurring in India, America, 

 Eussia, Belgium, and Great Britain, and is now, for the first time, 

 recognized in Australia. In Britain we do not know this shell in 

 our Devonian series. Although described by D'Orbigny under 

 this name, by De Koninck as Productus cornoides, by M'Coy as P. 

 corrugata, and by M'Chesney as P.pileiformis, they are nevertheless 

 all one species. Our shell was evidently very thin and fragile, with 

 a gibbous ventral valve, the surface covered with straight, wavy, or 

 flexiious longitudinal thread-like striae or ribs, and few spines. 



