452 Mr. P. W. Bassett- Smith on 



Madrepora robusta, Dana. 



1848. Malrepora robusta, Dana, Expl. Exp. Zooph. p. 475, pi. xxxix. 

 fig. 3. 



Tizard Bank, 5 fath. 



Madrepora crehripora^ Dana. 



1848. Madrepora crebripora, Dana, Expl. Exp. Zooph. p. 470, pi. ixxi. 

 fig.l. 



Sand-Kay, Tizard Bank, \ fatli. 



Madrepora secunda, Dana. 



1848. Madrepora secunda, Dana, Expl. Exp. Zooph. p. 481, pi. iv a. 

 fig. 4. 



Tizard Bank, 5 fath. 



Madrepora scahrosa, Quelcl 



1887. Madrepora svabrosa, Quelch, Chall. Rep. vol. xvi. p. 152, pi. i, 

 fig. 2. 



Tizard Bank, 61 fatli. 



Madrepora horrida, Dana. 

 Tizard Bank, 2 fath. 



Madrepora Ehrenhergiij Ed. & H. 

 1860. Madrepora Ehrenhercjii, 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 ecliinnlo- striate, bearing curved, simple or subprolife- 

 rous, gradually tapering branclilets, 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 ; under surface shows branches 

 sinuously curved, with spreading margin, not coalescing, with 

 few immersed calices. 



Macclesfield and Tizard Banks, 20 to 27 fath. 



Madrepora compressa, sp. n. 



Pedunculated from wide base, dendriform, flattened and 

 oblique, cc.'»pitoso, branches coalescing ; upper surface bearing 



