Av4 A. E. Verrill—Marine Fauna of North America. 
ANTHOZOA. 
Actinernus, gen. nov. 
Off Sable L, N. S., 200-250 fathoms, Aug., and Banquereau, 
about 200 fathoms, Sept. 9, 1878,—Capt. J. W. Collins, sch. 
“Marion.” Eastern slope of George’s Bank, in about 220 fath- 
oms,—Capt. and crew of the sch. “ Alice G. Wunson,” ee es 
1878. Lat. 42’ 31°; long. 64° 20’, 300 fathoms,—Capt. Wm. 
H. Greenleaf, sch. “ Chester R. Lawrence.” __ 
Synanthus, gen. nov. 
Actiniz which have a broadly expanded, thin base from 
which new zodids arise by’ budding, so as to constitute a small 
colony, connected together by a common base. Inategument 
thin and smooth. Tentacles numerous, retractile. 
Synanthus mirabilis, sp, nov. 
- Colonies often consist of five or six, or.more, zooids, which 
are generally parasitic upon the branches of Primnoa reseda 
and Paragorgia arborea, often surrounding them like a ligature, 
__and in the case of Paragorgia often forming deep constrictions 
_ so as to seriously weaken the branches. Column low and but- 
ton-like in contraction, the integument so translucent as to 
_ show the numerous internal radiating lamellae. Same localities _ 
as for the preceding species. __ : 
