82 AGARICIA. 



MYCEDIUM Oken. 

 Mycedium fragile Dana. 



(See Deep-Sea Corals, page 48.) I do not know the upper limit in 

 depth of this species, having never seen it in shoal water. It is repre- 

 sented in the Museum by numerous fine specimens collected by differ- 

 ent persons who did not use a dredge, so that it must probably reach 

 to two or three fathoms from the surface. 



Agaricia undata is mentioned by Dana as being found at Key West. 

 There is no specimen in the Museum. It is found near Havana. ( Coll. 

 Amngo.) 



AGARICIA Lamk. 



Agaricia agaricites M.-Edw. & H. 



Madrepora agaricites Pallas. 



Madrepora ar/aricites Ellis & Sol. PI. 63 (indifferent figure). 



Pavonia agaricites Lamk. 



Mycedia agaricites Dana. 



Quite common on the reef, forming occasionally large clusters on the 

 sides of masses of other corals. 



Agaricia purpurea Lksueur. 



Mycedia jnirpurea Dana. 



On the authority of Professor Verrill, I include this species among 

 the Florida corals. The Museum of Comparative Zoology has no un- 

 doubted sjDecimens of it from that coast, but has some from Hayti, of 

 large size. Young specimens would probably be difficult to distinguish 

 from young A. agaricites, which is at first unifacial. 



