DIAGNOSES AND DESCRIPTIONS OF NEW 

 SPECIES OF CORALS 



FROM THE "SIBOGA-EXPEDITION" 



A. ALCOCK, M.B, LL.D., F.K.S. 



Superintendent of the Indian Museum and Professor of Zoology and 

 Comparative Anatomy in the Medical College of Calcutta. 



1. Caryophyllia cultrifera n. sp. 



In form tliis species much resembles C. communis Seg. and C. 

 ambrosia mihi, but difïers from botk in the enormous size of tbe 

 septa and reniarkable prominence and sharpness of the costse of 

 the first two cycles. The septa of these two cycles are even larger 

 than those of C. (Ceratocyathus) zanclaa and compressa Seg. 



Corallum unattached, curved and slightly twisted, hardly cora- 

 pressed. 



Costse very thin, sinuous, those of the first two cycles extremely 

 prominent and trenchant. 



Septa thin, wavy, denticulate, 48 in number in six regular 

 systems : those of the first two cycles are equal, and are of 

 enormous size and greatly exsert: those of the fourth cycle are 

 a little larger and very much more exsert than those of the third : 

 the surfaces of all are rather distantly papillose. 



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