394 NOTK ON A NEW SPECIES OF CHiETETES. 



tabula? are remarkably regular and horizontal, as distinguished 

 from the irregular and strongly curved tabulae in the Australian 

 Devonian species. On the same Plate, Nicholson has figured 

 (fig. 4c,d) sections of a coral from the Carboniferous of Shap, 

 Westmoreland, which he refers to C. radians, and which ap- 

 proaches the Australian species in its thin walls and more con- 

 spicuous projections. 



EXPLANATION OF PLATE XLII. 



Chcetetefi stelUformif^, sp.nov. 

 Fig. 1. — Exterior of fractured surface of specimen, showing small size of 



corallites, their gentlj^ curved habit and interrupted platforms of 



tabulse; 1| nat. size. 

 Fig. 2. — Transverse section of corallum, showing strong development of 



partitions and occasional fission of corallites; ( x 16). 

 Fig. 3. — Longitudinal section, showing complex nature of wall, curved 



tabulse and longitudinal partitions; ( x 16). 



