444 Mr. P. W. Bassett-Smith on 



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

 which are very difTerent from those of Siderastrcea galaxea, 

 renders the generic position of this form uncertain ; and there 

 is an apparent absence of synapticula. 



Tizard-Reef lagoon, depth 6 fath. 



Genus Fungi A, Lam. 



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

 mens were usually dead and incrusted by other organisms, 

 60 that their specific characters could not be determined. 



Fungia scutaria ?, Lam. 



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

 p. 372. 



Tizard Bank, ^ fath. 



Genus Pavonia, Lam. 



Pavonia papyracea^ Dana. 



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

 fig. 3. 



Entire and fragmentary fronds of this species were obtained, 

 fiome living, others dead and incrusted by Nullipores. 

 Macclesticld 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 otlier. 

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

 either flattened or slightly incurved, the under surface finely 

 striate, the stride 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, thecalices in single series varj-ing from 

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

 borders slightly elevated; from 12 to 10 septa, their sides 

 very minutely spinous. A small blunt tuberculate columella. 



The single living clump is 00 millim. in height by 75 in 

 width. 



From the Tizard Bank, depth 27 fath. 



Pavonia rojiwsa, sp. n. 

 Corallum email, branching, the bramhcs narrow, generally 



