1 86 Papers from the Marine Biological Laboratory at Tortugas. 



joints of these fibers, as well as those of the zoarium, conspicuously jet- 

 black. As the form of the colony and of the zooecia agree fairly with 

 denticulata, I retain that name for the species. It is unfortunate that 

 ovicells are wanting, so that it is impossible to make a positive determina- 

 tion, for, in spite of the number of times the species has been recorded from 

 North America, there seems to be not one of these records based on an 

 unquestioned identification. 



Genus Lichenopora Defrance, 1823. 

 Lichenopora hispida (Fleming). 



Fleming, 1829, p. 530 {Discopora hispida). — ^Jelly, 1889, p. 134, synonymy. 

 A very minute specimen was taken on an alga at 2 fathoms and placed 

 with some question in this species. A well-developed colony taken by Dr. 

 Paul Bartsch at Biscayne Key, Florida, has recently been examined, and 

 after comparison there seems to be no doubt as to the identity of the Tortu- 

 gas specimen. The species hitherto has not been noted in the Florida or 

 West Indian regions. 



CHEILOSTOMATA. 



Genus Aetea Lamouroux, 18 12. 

 Aetea truncata (Landsborough). 



Landsborough, 1852, p. 288 {Anguinaria truncata). — Jelly, 1889, p. 5, synonymy 

 and references. — Cornish, 1907, p. 75. — Norman, 1909, p. 283. 



Common in shallow water and down to 5 fathoms, creeping over shells 



and seaweed. It has been recorded at Canso, Nova Scotia (Cornish, /. c). 



Aetea sica (Couch). 



Couch, 1844, p. 102 (Hippothoa sica). — ^Jelly, 1889, p. 5 {^tea recta) synonymy and 

 references. — Waters, 1909, p. 129 {/Eiea recta). — Norman, 1909, p. 283. 



Tortugas at 10 fathoms on shells. Not previously noted in American 

 waters. 



Some authors prefer to consider this only a variety of Mtea anguina. 

 The latter has not been taken in the Florida region, though it Is common 

 northward from Beaufort, North Carolina. 



Genus Bugula Oken, 1815. 



Bugula neritina (Linne). 



LiNNE, 1758, p. 38 {Sertularia neritina). — Verrill, 1878, p. 304 {Acamarchis neritina); 

 1900, p. 588. — Robertson, 1905, p. 266. — Waters, 1909, p. 135. 



This widely distributed warm-water species is abundant in the shallow 

 water, growing on piles, shells, seaweed, etc. Colonies 1.5 Inches In height 

 with ooecia abundantly developed were taken on the bottom of a skiff 

 which had been In the water only from May i to June 23. 



Verrill has recorded the species for the Bermuda Islands and from Fort 

 Macon, near Beaufort, North Carolina. Otherwise It has not been noticed 

 on the American side of the Atlantic. Robertson found It common on 

 the Pacific coast as far north as Monterey Bay, California. 



