334 I^K. S- J- HICKSON— REVISION OF THE 



Moreover, the narrow calcareous stolons of Cyatlwpodium do not correspond in any way 

 with the transverse plates of TuUpora. They are homologous with the stolons of 

 Tuhipora, and there is nothing like the horizontal platforms ir, this form. From the 

 beautiful drawing given by Dana (3) it appears to be very similar macroscopically to 

 Forbes's Sarcodictyon, a genus which, as I have pointed out, must now be abandoned. 



Aulopora tenuis (Dana) = Cyathopodium tenue (Verrill) = Clavularia tenuis. 



The genera Telesto, Coelogorgia, Sclerantlielia, and Pseudogorgia seem to me to be 

 very remotely allied to the Stolonifera, and I do not think it is necessary to discuss 

 their relations here. They all belong to the Alcyonida. 



The genus Erythroiwdium was established by KoUiker (20) for the Xenia cary- 

 hceorum of Duchassaing and Michelotti (4). From the description and figures given by 

 the Italian observers, and the very brief description of the species given by Kolliker, it 

 is quite unreasonable to accept without further comment the genus Erythropodium. 

 It seems to me to be highly probable that Duchassaing and Michelotti were perfectly 

 correct in their identification of the specimen they examined as a Xenia. 



The genus Callifodium, established by Verrill (32) in 1869, would probably be more 

 correctly placed among the Alcyonidse than the Clavulariidse. " The polyps are rather 

 large and situated at the tops or summits of round-topped verrucse, which are more or 

 less elevated above the surface of the coenenchyma, and either distantly scattered or 

 closely crowded together; in the latter case often united laterally nearly to their 

 summits." These points seem to indicate, as Verrill remarks, that it is "more nearly 

 allied to the Briareidse than to the Cornularidse (Clavulariidse, mihi), and I am 

 therefore inclined to regard it as an encrusting genus of the former family, since 

 even the typical species of the genus Brim'eum is sometimes found growing in broad 

 encrusting sheets on stones, or parasitically covering the dead axes of many species 

 of Gorgonidse. 



The genus Anthopodium, also established by Verrill (34), seems to be closely related to 

 Callipodiimi on the one hand, and Telesto on the other. There is no reason whatever 

 for retaining it in the suborder Stolonifera. 



Genus Cornulaeia, Lamarck (24). 



Without spicules. Stolons with a simple cavity. The basal parts of the polypes 

 and stolons protected by a horny secretion. 



Cornularia cormicajnee. Naples, von Koch (16) = Tubidaria cornucopice, Pallas, Elenchus. 

 Cornularia awantiaca. China. Stimpson (27). 



The species given by Quoy and Gaimard, Cornularia multipinnata and Cornularia 

 suhmridis, belong properly to the genus Xenia. 



A further and more detailed account of the anatomy of this genus is a desideratum. 



