444 Mr. P. W. Bassett-Siuith on 



The absence of a columella and the character of the septa, 

 which are very different from those of Siderastroea galaxea, 

 renders the generic position of this form uncertain ; and there 

 is an apparent absence of synapticula. 



Tizard-Reef lagoon, depth 6 fath. 



Genus Fungia, Lam. 



Very few examples of this genus were obtained ; the speci- 

 mens were usually dead and incrusted by other organisms, 

 so that their specific characters could not be determined. 



Fungia scutaria ?, Lam. 



Fungia scutaria, Lam. Hist, des Anim. sans Vert^br. t. ii. (2nd ed.) 

 p. 372. 



Tizard Bank, ^ fath. 



Genus Pavonia, Lam. 



Pavonia papyracea^ Dana. 



1848. Pavonia papyracea, Dana, Expl. Exp. Zooph. p. 323, pi. xxii. 

 fig. 3. 



Entire and fragmentary fronds of this species were obtained, 

 Bome living, others dead and incrusted by Nullipores. 

 Macclesfield Bank, depth 40 fath. 



Pavonia pretiosa, sp. n. 



Growing in small bushy clumps of narrow, contorted, 

 ribbon-like branches, which do not coalesce with each other. 

 The branches about 5 millim. in width, of paper-like thinness, 

 either flattened or slightly incurved, the under surface finely 

 striate, the strise crested by blunt tubercles, the margins of the 

 fronds very spinous from the projecting ends of the septa. 

 The upper surface flat, or more generally incurved so as to 

 form an open channel, the calices in single series varying from 

 3 to 10 millim. apart, about 1 millim. wide, their immediate 

 borders slightly elevated ; from 12 to 16 septa, their sides 

 very minutely spinous. A small blunt tuberculate columella. 



The single living clump is 60 millim. in height by 75 in 

 width. 



From the Tizard Bank, depth 27 fath. 



Pavonia rarnosa, sp. n. 

 Corallum small, branching, the branches narrow, generally 



