187 1. Oi t/iis sf) iatiila, Kavser ; — Die Brachiopoden d. Mitt.-u. Ob.- 



Devon d. Eifel, p, 598. 

 1883. Or////s sti iafiila Kavser : — A'. Richtmofkn's China, vol. IV., p. 



90. pi. 13. %. I. 



18S4. Ortlii.^ .^triatula, Tschernyschew : — Materialien zur Kenntniss d. 

 dev. Ablagerngen in Russland, pi. III., fig. 18. 



1902. Ort/iis ^triatiila, Hudlk.ston : — Fossils from the Hindu-Khoosh, 

 p. 53. pi. II.. fig. 7. 



]gog. Scltizophor ia striatula, var. aii^tralis, KiM'Lk: — The Devon. 

 Fauna of the Ouray Fimestone, p. 21. pi. 1., figs. 4-S pi. II., figs. 

 1-5 ; pi. III., fig. I.' 



lSr2. Ortliii striatitla, M.^n.sl'v : — Etude Geologique du Yun-nan Ori- 

 ental. Pt. II., p. 53 and 67. pi. IX.. fig. 4. 



1913. O) this striatula, EoEWJ-: : — Die nordisclien Devongeschiebe 

 Deutschlands, p. 31. 



1914. DaliiiaiiLlla st) iatiila, OuiKixG : — Zusammenstellung der Stropho- 

 meniden d. Mitteldevons der lufel, etc., p. i iS. 



Except that the size is quite small, the Chinese materials now to be con- 

 sidered are identical with the species named above. Yet one of tlie three 

 lots is of the usual size. In one example which was collected ii^ the province 

 of Kwei-chou (fig. 22), the dorsal valve is not more convex tlian the opposite 

 one, not like is usually in the case with the .species. In all the other examples 

 the characteristics of the species are very well represented. In one of the 

 specimens from the province of Kwang-hsi (fig. 21 ) which is practically of 

 the same dimensions as that from Kwei-chou, the relative de[)th of the valves 

 is exactly as in the regular relation : and these two examples in all other 

 essential points, are hardly separable. Of course, if there were a number of 

 specimens of both types, then they might be distinguished as two varieties, 

 provided the above mentioned difference was persistent. This, however, 

 the writer, cannot decide because there are only five specimens of these 

 smaller types, one from Kwei-chou and four from Kwang-hsi. 



Of all the examples of the species ever described and illustrated, the 

 majority are indeed of quite conspicuous dimensions. The\' are, as a rule, 



