213 



1883- Ait/iv?-!S Rovss//, Waagv.n : — Salt-Range Fossils IV'., p. 475. pi. 



XXXIX., fig. ro; pi. XL., figs. 6, 7, 8, il, 12. 

 1S87. Af/ijris Kayssii, De KoN'inck : — Faune duCalcaireCarb.de la 



Eelgique, p. 85. pi. XIX., figs. 19-28. 

 1890. Atliyris Royssii, Nikiti.n' : — Depots carboniteres et Puits artesiens 



dans la Region de Moscou. Mem. Com, Geol., vol. V., No. 5, 



pp. 68 & 166. pi. III., fig. 8. 

 1897. Athvris Royssii, Dikner :— The Permo-Carboniferous P'auna of 



Chitichun, p. 59. pi. X., figs, i, 2, 3, 6. 

 1909. Athyris Royssii, Sommicr : — Die P^auna des Culms von Konigsberg 



bei Giessen. Neues Jahrb., Beil,-Pd., XXVIIL, p. 629. 



Quite a large number of well preserved specimens were collected by Mr. 

 Y. IsHu in the province of Hu-nan. All the specimens are rather small there 

 being hardly one that in point of size will equal those figured by Davidson or 

 De Koninck. They are alm.ost of the same dimensions as those from the 

 P7 oditt-liis-\\meston& of Salt-Range, figured by Waagen. Some of them have 

 yielded to some diastrophic pressure and are somewhat strongh' deformed. 



This species has been usually regarded as representig the Power Car- 

 boniferous age in I^uropc, as for example, in Belgium and in Britain. It is 

 very note worth)' that it has been recorded from the Prodno/ iis-\\mestor\& in 

 southern Asia, as Davidson's and Waagicn's papers show us. C)n the other 



hand according to Waagen, Atliyris royssii in I'Airope does not seem to be 

 restricted to the mountain-limestone, but seems to pass up in its t\'pical shape 

 into the Permian formation.^' The present material, therefore, ma\' also in- 

 dicate such a formation in the province of Hu-nan. But, on the other hand, 

 it was collected together with Spirifcr bisiilcaiiis^ and Rliyncliouilla f^l cnrodi'ii , 

 the former of which also passes up to the Permo-Carboniferous formation, 

 while the latter is essential!}- Lower Carboniferous as far as the present 

 knowledge is concerned. 



P"or the determination of the specimens not only the [papers above cited 

 have been consulted, but also several specimens of Athyris royssii from 

 P^urope have been brought into comparison. /\mong a number of Belgian 

 examples there are several younger ones, which are almost oft he same smalt 



1) VVaac en: op. cit. p. 479-8, 



