1896. Ji". cifclicnsis Gurich : Das Palaeozofcum im Polnischen MitteJ-' 

 gebirge, p. 1 17. 



1890. ^. r/yT//V;/5/i- Nicholson and HiNDE : Western Australian Fossils'. 

 Geol. Mag., London, dec. Ill,, vol. VII., p. 193, pi. VIII., figsi 

 7 a-c. 



1908. ? .S". cifclicnsis Cowper Reed : Devonian Fauna of the northern 

 .Shan States. Pal. India, N. S., vol. II., Mem. 5, p. 34, pi. IV., 

 fig. 18. 



Encrusting Stroiiiatoporclla, forming crust a little more than 5 mm. thick ; 

 surface undulating, though without showing any conspicuous eminences ; 

 astrorhiza well developed. 5 layers of horizontal calcareous skeleton and the 

 corresponding number of the interspaces in 2 milHmeters. Horizontal layer 

 of the calcareous skeleton rather thick,^ being almost similar to their interspaces. 

 Vertical pillars short, not continuous through two succeeding interspaces ; of 

 nearly the same thickness with the horizontal component of the calcareous 

 skeleton. Tabulae extremely rare. 



Obs. : — From the middle Devonian of Gerolstein in Eifel, Germany, the 

 senior author once collected 3 parasitic forms of Stromatoporclla, two of 

 which belong to the already known species, 5! cifclicnsis Nich. and 5'. ciiriosa 

 Barg.,^^ while the third seems to represent a new species. In the internal 

 structure, the first two are very allied to each other, both composed of hori- 

 zontal layers of similar thickness, in alternation with interspaces of nearly the 

 same breadth ; in both, the interspaces are seldom interrupted by tabulae. 

 These tabulae are exceedingly well developed in the third species which is 

 further characterized by having the calcareous skeleton somewhat coaser in 

 texture, its horizontal layers being separated by interspaces distinctly much 

 wider than in the other species. The surface of the species shows often 

 tuberosity, but the tubercules do not develope so prominent as in S. citriosa. 

 S. eifelicnsis, on the other hand, has its surface smooth and destitute of 

 mamelons. 



The single specimen from China, which is well preserved, 'agrees exactly 

 in all essential features of the calcareous skeleton with the specimens of S. 



i) Nicholson: Brit. Foss. Stromatoporoids, p. 213. pi. XXVIII,. figs. 1-3. Bargatzky: Die 

 Stromatoporen des Rheinischen Devons. p. 55. i88i. 



