456. Mr. P. \V. Bas.sctt-Smith on 



])ro]iferoii.s, curved calices, often 15 centiin. long, not dilated 

 at base ; aperture I millirn. round, lip ratlier thick, si^pta six ; 

 under surface shows branches and bratichlets uniting to form 

 irregular and close network almost entirely bare of calices, 

 which are immersed ; surface minutely echinulate. Ooralluni 

 dense, ends of calices tipped with lilac. 



This species differs from " speciosa''^ in having the long 

 tubular calices rising from short stems with appressed nari- 

 forni calices, and the calices not being dilated at the base. 

 From ^'fraf/ilis'''' it is quite distinct. 



Alacclcsfield Bank, 2(i^ fath. 



Madrepora Ramhlcri^ var. 

 Living, Macclesfield Bank, 20^ fath. 



Genus PORITES, Lam. 



Porites mucronata, Dana. 



1848. Porites mucronata, Dana, Expl. Exp. Zooph. p. ooS, pi. liv. 

 fig. 2. 



Tizard Bank, \ fath. 



Porites conferta, Dana, 

 1848. Porites conferta, Dana, Expl. Exp. Zooph. p. 557. 

 Itu-Aba, Tizard Bank, 2^ fath. 



Porites lutea, Quoy & Gaimard. 



1833. Porites co7iglomei'ata, var. Iviea, Quoy & Gaimard, Vovage de 

 I'Astrol., Zooph. p. 249. 



Tizard Bank, ^ fath. 



Porites tennis, Verrill. 

 1865. Porites tenuis, Verrill, Proc. Essex Inst. vol. v. pt. 3, p. 25. 

 , Sand-Kay Keef, Tizard Bank, ^ fath. 



Porites arenosa, Espev, sp. 

 1797. Madrepora arenosa, Esper, Pflanz. t. i. Suppl. p. 80. 

 Lagoon, Tizard Reef, 2 to 6 fath. 



Porites lichen ?, Dana. 

 1848. Porites lichen, Dana, E.^pl. Exp. Znoph. p. •'itJii. p!. hi. fig. 4. 

 Gurvan Reef, Tizard Bank, 2^ fath. 



