Mr EtJieridge on Fossils from Boiucn River Coalfield. 271 



of the shell, from the hinge line or beak to the front margin, 

 and also latemlly, from side to side, the result being that the 

 length of the hinge line is also variable, short in some 

 varieties, longer in others. 



We possess three shells from the Fanning Eiver beds, 

 which I think are more than probably this species. If we 

 take the best preserved of the three, we find that it is very 

 much more transverse than those represented by Mr David- 

 son on PL X. of his Devonian Monograph, but not more so 

 than some of the figures of PL XI. of the same work. 

 Again, the relative convexity of the valves when in apposi- 

 tion is very much less than Mr Davidson's fig. 15 of PL 

 XI., but is a little more pronounced than the fig. oa of the- 

 same plate. Even among the three Queensland examples 

 the shape varies somewhat. The ribbing of the valves cor- 

 responds with that seen in A. desqiiamata, and there are 

 also traces of concentric laminse. Mr Davidson lays stress 

 on the exposure of the foraminal aperture and presence of an 

 area. Both are to a certain extent visible in one of the 

 Queensland specimens, and of the former I give an enlarged 

 figure. 



Professor M'Coy appears to have been the first to describe* 

 the spiral appendages in A. desqicamata, and they have since 

 been figured in their entirety by Mr Davidson.f It is inter- 

 esting to note that two of the specimens under description 

 (PL YII., fig. 4) exhibit traces of these arms from the shell 

 having been removed by weathering. 



Loc. and Horizon. — Limestone of the Fanning Eiver, and 

 shale above the Fanning Limestone, at Fanning Old Station. 



Collector. — E. L. Jack, Esq. 



Genus Ehynchonella — Fischer, 1809. 



(Notice Foss. Gouv. Moscou, p. 35.) 

 Rliynchonella, sp. ind. — PL YII., fig. 5. 



(Compare R. primipilaris (Von Buch), Davidson, Mon. Brit. Dev. 

 Brachiopoda, 1865, p. 6Q, t. 14, f. 4-6.) 



Ohs. — We have five specimens of a EhyncJionella, which 

 appear to be very close to if not quite identical with this 



* Brit. Pal. Foss,, p. 379. + Loc. cit, t. 11, f. 7, 8. 



