Haddon and Shackleton — A Revision of the British Actinice. 631 



PALYTHOA, Lamouroux, 1816. 



Brachjcnemic Zoanthese, with a single mesoglceal sphincter muscle. The body- 

 wall is incrusted; the mesogloea contains numerous lacunae, and occasionally 

 canals. Dioecious. Polyps immersed in a thick coenenchyme. 



RECOGNIZED SPECIES. 



P. mammillosa (Ellis & Sol.), 1786. — Jamaica, = Corticifera lutea of Hertwig, 

 1888. — Bermudas, probably not C. lutea, Quoy & Gaim., 

 1833.— Tongatabou, [E. & H.]. 



P. ocellata (Ellis & Sol.), 1786. — Dominica, Jamaica, [M.]. 



P. ^/ffireofo (Lesueur), 1817. — Guadeloupe, Bermudas, [M.]. 



P. /«m (Lesueur), 1817. — St. Thomas, Bahamas, [M.], 



P. tuberculosa, of Hertwig, 1888. — Cape of Good Hope ; probably not 

 P. tuberculosa, Klunz., 1877. — Red Sea, [E. & H.]. 



P. howesii, Hadd. & Shackl., 1891.— Torres Straits, [H. & S.]. 



P. kochu, Hadd. & Shackl., 1891.— Torres Straits, [H. & S.]. 



P. coesia'i, Dana {fide H. & S., 1891).— Torres Straits, [H. & S.]. 



THE FOLLOWING PEOBABLY BELONG TO THIS GENUS:— 



P. aggregata (Lesson.), 1830. — Society Archipelago. 



P. lutea (Quoy & Gaim.), 1833. — Tongatabou. 



P. flavo-viridis, Ehr., 1834. — Red Sea. 



P. argus, Ehr., 1834. — Red Sea. 



P. coesia, Dana, 1846. — Fiji. 



P. glutinosa, Duch. & Mich., 1866. — St. Thomas, probably = P. ocellata, 



(E. & S.). 

 P. caribceorum, Duch. & Mich., 1866. — St. Thomas. 

 P. cinerea, Duch. & Mich., 1866. — St. Thomas. 

 P. tuberculosa, Klunz., 1877. — Red Sea. Probably neither of Hertwig nor 



of Studer, 1878.— New Ireland. 

 P. culcuria, Miill., 1883. 



