452 
Mr. P. W. Bassett* Smith on 
Madrepora robusta , Dana. 
1848. Madrepora robusta , Dana, Expl. Exp. Zooph. p. 475, pi. xxxix. 
fig. 3. 
Tizard Bank, 5 fath. 
Madrepora crebripora ) Dana. 
1848. Madrepora crebripora , Dana, Expl. Exp. Zooph. p. 470, pi. xxxi. 
fig. 1. 
Sand-Kay, Tizard Bank, i fath. 
Madrepora secunda , Dana. 
1848. Madrepora secunda , Dana, Expl. Exp. Zooph. p. 481, pi. iv a. 
fig. 4. 
Tizard Bank, 5 fath. 
Madrepora scabrosa , Quelch. 
1887. Madrepora scabrosa , Quelch, Chall. Rep. vol. xvi. p. 152, pi. x. 
fig. 2. 
Tizard Bank, 6| fath. 
Madrepora horrida } Dana. 
Tizard Bank, 2 fath. 
Madrepora Ehrenbergii , Ed. & H. 
1860. Madrepora Ehrenbergii ) Ed. & H. Hist. Nat. des Cor. t. iii. p. 143. 
Tizard Bank, 5 fath. 
Madrepora dendrum , sp. n. 
Arborescent, subcespitose ; stem solid, strong ; surface 
finely echinulo- striate, bearing curved, simple or subprolife- 
rous, gradually tapering branchlets, 2^ centim. long, 3 
centim. thick, with compressed nariform calices, tending to 
form into rows showing two very long septa ; apical calices 
1 millim., exsert, stem distinct ; undersurface shows branches 
sinuously curved, with spreading margin, not coalescing, with 
few immersed calices. 
Macclesfield and Tizard Banks, 20 to 27 fath. 
Madrepora coinpressa , sp. n. 
Pedunculated from wide base, dendriform, flattened and 
oblique, cespitose, branches coalescing ; upper surface bearing 
