n26 



igo2. F. forhcsi P. Pocta : Anthozonaires et Alcyonaires in J. Bar- 

 rande's Systeme Silurien. p. 239, pi. LXXVIL, figs. 5-9 ; pi. C, 

 figs. 1-16. 



1 91 5. F. forbcsi Yabe and Hayasaka : Palaeozoic Corals from Japan, 

 Korea and China, p. 67. 



Corallum massive, composed of numerous prismatic or subcylindrical 

 - corallites of very varied diameter ; the larger ones, often 2.5 mm. wide, are 

 relatively few in number and intercalated in numerous smaller ones, which are 

 very variable in diameter (some hardly attainig 0.5 mm ). Septal spines 

 . blunt, irregularly distributed, and often obsolete. 



Obs. — This characteristic species o{ Favositcs, easily distinguishable from 

 the allied forms by its unequal corallites, appears also to be represented in our 

 collection of the Chinese fossils. The typical form of the species is usually 

 believed to be confined in Silurian rocks, but many varietal forms of it occur in 

 the Devonian- Thus Nichoi^on^' described a* form somewhat resembling 

 the Chinese specimen, from the Middle Devonian of Gerolstein in Eifel, as 

 of its variety, although this is now usually regarded as idential with 

 F. goldfiissi on the authority of Frech and not allied to F. forbesi. 

 More recently, however, Pocta,-' finding some varieties of the latter in 

 the Devonian F 2 of Konjeprus in Bohemia, put the occurrence of the 

 coral of this type in Devonian rocks beyond doubt. The present specimen 

 which is also no doubt of the Devonian age (being found in association 

 with CyatJio/tliyllum caespiiosinii Goldf. var. brcviscptata Frech and C. 

 ^hetcrophylloidcs Frech), appears very s'milar to, if not quite identical with, 

 the typical form of F. forbesi from Silurian. Owing to the want of material 

 enough for the more detailed comparison, we think it premature to settle the 

 question regarding their specific identity. 



Locality : — South of Ping-yi'pu, Pin-wu-hsien, prov- Kiang-si. This 

 species is recorded from the. Silurian rocks of iEurope, Asia, North America, 

 Australia, and from the Devonian of Bohemia. 



Geological Age : — Middle or Upper Devonian. 



1) A. Nicholson: op. cit., p. 6r, pi. II., Fig. 3^ pi. III., Figs. i-ih. 



2) P. Pocta: op. cit., p. 241. 



