574 ZOOPHYTES. 



The Lictienopora, according to Blainville, have a subturbinate form, with minute an- 

 gular cells over the upper surface ; this surface is concave, and covered with small, ridge- 

 like prominences, stellately arranged, as in the Pelagia. Blainville, after an examination 

 of the fossils upon which the genus was founded by Uefrance, suggests that they are pro- 

 bably young forms of Retepores. He added a Mediterranean species (L. Mediterranea) 

 to the genus, but without describing it, only mentioning that it was a Retepore in struc- 

 ture, and near the genus Frondijxtra. 



Michelin has described an incrusting species, of uncertain locality, which, from the 

 character of the cells, and its small stars of verruca;, he has referred to Defrance's genus, 

 calling it Lichenopora glomerata. It occurred around the axis of a dead Antipathes, 

 forming an incrustation three-fourths of an inch long, and nearly half an inch thick ; the 

 stars of verrucas are two to three lines in diameter, and the whole surface is covered with 

 minute, contiguous, subangular cells, which, according to the figure, are hardly a twenty- 

 fifth of a line in diameter. Michelin states that the cells are prolonged to the axis of the 

 group. From this last character, and the size and appearance of the cells, it is pos- 

 sible that the species may be congeneric with the fossils of the genus Constellaria, men- 

 tioned under Favosites. 



Lichenopora, Defrance, Diet, des Sci. Nat., Lichenoporn, Lamk., 3d ed., ii., 284. 



xxvi., 257. L. glomerata, Michelin, Guer. Mag. de Zool., 

 , Blainville, Man., 407, pi. 68, fig. 4. 1840, Zooph., pi. 1. 



TRIBE IV. ANTIPATHACEA. 



Actinaria sex-tentaculata ; gemmipara, gemmatione inferiore. 



Actinaria having 6 equal tentacles; gemmiparous, with the gemma- 

 tion inferior. 



FAMILY L ANTlPATHIDjE. 



Zoophyta ajfixa, caukscentia et scepius ramosa ; secretiones corallica: 

 internets nullas, sed basi epidermicas ramorum axem elaborantia. 



