127 



Favosites sinensis Yabe and Hayasaka. 

 PI. VIII., Figs. 2 a-c. 



191 5. F. sinensis Yabe and Hayasaka: Palaeozoic Corals from Japan, 

 Korea and China, p. 6S. 



Corallum cylindrical, about 25 mm. thick ; composed of numerous sub- 

 prismatic corallites, arranged almost verlically along the imaginary axis, then 

 ■curving outward and finally emeriging at or nearly at right angles to the sur- 

 face. Corallites almost uniform in size, measuring about 1.5 mm. in diameter ; 

 polygonous, six-sided ones most predominating among them. Mural pores 

 ■considerably large, arranged in a single row. Neither septal spines nor 

 squamulae preserved. Tabulae numerous, 7— S in a space of 5 mm., complete 

 and very regularly horizontal, appearing in same levels all across the coral- 

 lites. Walls very thick, gradually thinning out from the surface inward. 



Obs. — This species, characterized by the concentric arrangement of 

 tabulae, much resembles PacJiypora in its general mode of growth. All 

 species of PacJiypora, however, have the corallites abruptly thickened near 

 the surface, and the tabulae, in general, very reduced in number ; but this is 

 not the case in our species. There is in fact none of the forms of Favositcs 

 and PacJiypora, so far as we are aquainted with, which is liable to be mis- 

 taken for this species. 



Locality : — -Pei-shi-pu, Ping-wu-hsien, Lung-ngan-fu, prov. Kiang-si. 



Geological Age ; — Devonian. 



Striatopora, Hall. 



A certain confusion prevails regarding the. specific and generic nomencla- 

 ture of the ramose Favositoid corals, which are very common in Devonian 

 >t rocl-:s and generally pass under the name of PacJiypora. This generic name 

 was first proposed by Lindstrom for his P. lamellicornis from the Gotlandian 

 ^ of Gotland, and the author refused decidedly to extend this generic name to 

 -such Devonian species as are to be enomerated below; Frech, on the other 

 hand, maintained that the Pachyporae are nothing else than Favmites with 



