192 



Mr. S. O. Ricllej on the Alcyonaria. 



Gorgonias omnes ponderosissima," whereas this species could 

 hardlj be of a less specific gravity, and is coloured grey or 

 dirty white. The species must therefore be cited as Mena- 

 cella reticularis, Grray, iiec reticulum, Pallas. 



In its spiciilation it differs very decidedly from the members 

 of the genus Yillognrcjia in having none but simple tuberculate 

 fusiform spicules, with strongly microtuberculate or exfoliating 

 tubercles 5 the spicules are black in colour, with the excep- 

 tion of the tubercles, whicli are colourless; the largest measure 

 •5 by -101 millim. 



GonGONBLLACBM, Valcncicnnes. 



Vereucella, Kolliker (nee M. Edw. & Haime). 

 Jvncella, Klunzinger, pars. 



Verrucella Candida, n. sp. (Fig. 2.) 



Corallum branching dicliotomously in various planes j 

 branches few and long and at considerable intervals ; the 

 terminal branches, where normally developed, from 3 to 

 15 inclies long (75 to 375 millim.) • branches given off at 

 angles of 45°' to 90°. 



Fig. 2. — Verrucella Candida. 



A. Fusiform whorled spicule of verrucfe, x 290 diam. B and D. Diffe- 

 rent forms of double-headed spicule of cortex, X 240 diam. C. 

 Oylindrieal spicule of verrucre, X .300 diam. E. Part of corallum, 

 iucludiug tlie iliird bifurcation from the base, nat. size. 



Stem and larger branches cylindrical, tlie stem 6 millim. 

 thick, the branches decreasing but slightly in diameter to- 



