* 



137 



in refering it to the weH known middle Devonian coral CyathopJiyllum 

 caespitosuin, and probably to its variety hrcviseptata Frech, which is distin- 

 guished from the typical form by its much shortened septa. The corallites, 

 measuring some 13 mm. in diameter, are almost circular in cross section, 

 though slightly elongated where two ajacent ones come into contact. There 

 are some 50 septa, alternately long and short. The longer ones, twice as 

 long as the shorter, never extend interiorly beyond 2/3 the radial length ot 

 the corallites ; their free end is often somewhat flexuous. The shorter septa 

 are well developed. The vesiculated peripheral zone is narrower in this 

 variety than in the typical form of the .species, and it is just so in our speci- 

 men. Judging from the cut-end of tabulae appearing on the thin section, 

 they must be rather numerous and closely set. 



This variety of C. caespitosinn was first described by Frech from the 

 middle Devonian of Eifel, in Germany, then recorded by Gurich from the 

 Mittelgebirge of Poland and lastly by Peetz from near Kusnetzk in Siberia. 

 It differs but slightly from the specimen now at our disposal, namely by its 



^hardly recognizable septa of the second order, which are considerably better 



--developed in the latter. 



Locality and Geological Age : — South of Ping-yi-pu, Ping-wu-hsien, 

 Lung-ngan-fu, prov. Sze-chuan. P'ound together with Cyathophylliun Jictero- 

 phylloidcs Ykmcu. Middle Devonian. 



Bryozoa. 

 Trepostomata. 



Trematoporidae. 

 Monotrypa, Nicholson. 

 Monotrypa parasitica Kayse j. 



PI. XVIII., Fig. 4. 



=1883. Cliaeictcs parasiticus Kvyser : Devonische Versteinerungen aus 

 dem siidwestlichen China. In Richthofen's China vol. IV., p. 95, 

 pl. XI., fig. 3. 



