530 PAL-EOXTOLO(iV OF QUEENSLAND, 



de Vis. In the present case the spines seem to be a part of the 

 laminar expansion, without that degree of individuaHty possessed 

 by those of A. Roysii, but at the same time hardly exhibiting the 

 same continuity of expansion visible in the lamellar frills of A. 

 planosulcatn, Phill. I therefore prefer to retain the Queensland 

 example under the above name. The preservation of the specimen 

 appears to represent a circular or orbicular shell, such as the 

 previously mentioned species, rather than a transversely elliptical 

 form similar to the N. S. Wales Permo-Carboniferous A ? crebri- 

 stria, Morris,* sp. 



Loc. and Horizon. — Rockhampton District (^C W. de Vis, Colin. 

 de Vis). Gyinpie Series. 



Family— PRODUCTID^. 



Genus — Product us, /. Sowerhy, 1814. 



(Min. Con., 1. p. 153.) 



Pkoductus ? sp.ind. 



Productus, sp.ind.fi;, Eth. fil, Geol. Pal. Q'land and New 

 Guinea, 1892, p. 25-5, t. 12, f. 1-5. 



Ohs. — In 1892 I described what was taken to be portion of a 

 Productus with spine bases and a few attached spines, after the 

 type of P. Jimbriatus, Sby. At the same time I expressed doubt 

 as to the reference of the specimen to that genus, and also remarked 

 — " the spines are too coarse and much too far apart for either an 

 Athyris, such as A. Roysii, or a Reticularia, like A', lineata." 



A further examination, through the courtesy of Mr. R. L. 

 Jack, has led to me to doubt the propriety of referring the shell 

 to Productus, and I now think that it may really be a Reticularia, 

 but one possessing much larger and more widely separated spines 

 than generally seen in R. lineata. It is evidently a portion of 

 the ventral valve with a shallow sinus. 



* atrzelecki's Phys. Descrip. N. S. Wales, &c., 184.5, p. 279, t. 15, f. 2. 



