M5 



Coenosteum in slender, slightly flexuous, cylindrical stems, from 2 to 3 



nmm. in diameter; traversed by a wide axial tube, 1/3-1/2 as broad as the 

 •stem, and traversed by distant transverse tabulae. General structure of the 



--coenosteum around the central hollow like that of a Stromatopora s.s., com- 

 rposed of very flexuous trabeculae, neither radial pillars nor concentric laminae 

 being recognizable ; trabeculae more or less circular in cross section, and 0.18 

 mm. broad in average ; interspace between the trabecuLne very irregular, 

 sometimes narrower and sometimes broader than, or almost equal to the tra- 

 beculae in breadth, and almost free from tabulae. 



This species is said to be very variable in structure ; the stems often 

 show no axial canal, these being considered by Felix to represent older 



i branches. Certain stems, on the other hand, show a peripheral zone 

 with large intertrabecular spaces ; this zone is shown by none of the 

 stems that appear in my microscopical section. We have compared the 



• Chinese material and the typical specimens of the species from England and 



. Moravia^' in thin sections, and confirmed their identity. 



Locality : — Kwei-lin, prov. Kwang-si'> Chin-lou-shan, Ho-lu-kou, Kiang- 



. hua-hsien, prov. Hu-nan. 



Very common in the Devonian rocks of E^ngland, Germany, Moravia 



-and the Miltelgebirge of Poland; characteristic of the upper part of the 



I Middle Devonian (rm/iosa-heds). 



Stromatoporella, Nicholson. 

 Stroraatoporella eifeliensis Nichol os. 

 PL IX., Fig. 10. 



1892. Stroviatoporella eifeliensis ^\Q\\oi£0^ : Brit. Foss. Stromatopo- 

 roids. P. 208, pi. IV., fig. 2 ; pi. VII., fig. 3 ; pi. XL, figs, r, 

 2 ; pi. XXVIL, figs. I, 2, 3. 



i) This is a part, of the original specimen o{ A. rainoia Uom Moravia described by Prof. 

 Felix in Leipzig; it was through his courtesy that I got a piece of the rock for micros- 

 copical study, during my short stay in Leipzig some years ago. I take this, occasion to 

 express my hearty thanks to Prof. Felix, 



