A CARBONIFEROUS FAUNA FROM NOWAJA SEMLJA. 163 



Dr G. H. Girty, who treats of this matter very exhaustively, proposes to restrict 

 Reticularia to its original implication, and quotes a number of American Mississipian 

 forms referable to this genus. * 



English authors who have of late years given much attention to the study of 

 the internal organisation of Carboniferous Brachiopods also consider dental plates 

 to be characteristic of Reticularia, but no mention is made by them of the 

 presence of a median septum,t and it would be rather interesting to know whether 

 there are actually such forms of "Reticularia" with dental plates, but without 

 median septum. 



Now, the interesting point already fully elucidated by Dr Girty is that there are 

 forms having the typical ornamentation of " Spirifer lineatus" but quite devoid of 

 dental and septal plates, and for these forms Dr Girty adopts Gemmelaro's genus 

 Squamularia, with this interesting remark, that in America it is an Upper Carboni- 

 ferous genus, whilst the septate Reticularia is essentially Lower Carboniferous. On 

 the other hand, such is not the case in Europe, as proved by the researches of various 

 authors. Waagen, who compared his Indian materials with specimens of " Reticu- 

 laria" lineata from Vise, found the latter to be devoid of internal partitions, and 

 Dr H. Scupin, after examining a number of specimens of "Spirifer" lineatus from 

 Germany, stated that this species is usually without dental plates.| In this same work 

 he points out that German examples of Spirifer glaber often have dental plates, and 

 on this evidence he denies a generic value to Reticularia and Martinia, a point of view 

 shared by E. Schellwien.§ 



The genus Squamularia having been created for the reception of Permian species, 

 the above review was necessary in order to show that its presence is not incompatible 

 with the Lower Carboniferous affinities of the Cape Cherney fauna, since the Lower 

 Carboniferous rocks of the Continent are said to contain representatives of a non-septate 

 " Spirifer lineatus," and such forms have also been recorded from Britain. || 



Genus Amboccelia Hall. 



? Ambocadia urei (Fleming). 



This species is possibly represented by an incomplete specimen of which I have not 

 been able to determine the internal characters. 



* G. H. Girty, "The Carboniferous Formation and Fauna of Colorado," U.S.G.S., Professional Paper No. 15, 

 1903, p. 31. 



t T. F. Sibly, " On the Carboniferous Limestone in the Mendip Area," Quart. Journ. Geol. Soc, 1906, p. 375 ; 

 A. Vaughan, "On the Faunal Succession in the Carboniferous Rocks at Loughshinny," ibid., 1908, p. 469; S. S. 

 Buckman, " Brachiopod Homceomorphy," ibid., 1908, p. 31. 



J H. Scupin, "Die Spiriferen Deutschlands," Palseontographica, 1900, pp. 5 and 6. 



§ E. Schellwien, " Die Fauna der Trogkofelschichten," Abh. h. k. Geol. Reichsanstalt, 1900, p. 67. 



|| A. Vaughan, "The Carboniferous Limestone Series of the Avon Gorge," Bristol Naturalists' Socitty Proceedings, 

 1906, p. 159 ; S. S. Buckman, loc. cit., 1908, p. 33. 



