2 BULLETIN OF THE 
sources nearly all the species known to inhabit the Atlantic coast of 
North America, in deep water, have been derived. The “ Challenger ” 
took a few additional species, mostly in still deeper waters, at a greater 
distance from the coast. The present report includes, therefore, nearly 
all the Anthozoa hitherto discovered in depths between 100 and 1,200 
fathoms, along the Gulf Stream Slope, off the coast extending from South 
Carolina to Cape Cod. A few well-known, more northern, deep-water spe- 
cies, like Primnoa reseda and Paragorgia arborea, not yet known except 
from the fishing banks, off Nova Scotia and northward, have been 
omitted, together with other northern forms that inhabit the shallower 
waters of New England, but extend downward beyond 100 fathoms. 
Among these are Cerianthus borealis V., Urticina crassicornis, Metridium 
dianthus (marginatum), Bolocera multicornis, Cornulariella modesta, &e. 
As the writer is about to print * a more detailed and illustrated report 
on all the Anthozoa of New England and the British Provinces, it was 
not thought desirable to include such species, when not in the Blake 
collections. Several West Indian species, mostly new, from the Blake 
collections of 1877-79, have been included in this report for the purpose 
of comparison with the northern forms, and more fully to illustrate the 
characters of the two families, Ceratoiside and Dasygorgide, nov., to 
which most of the southern species referred to belong. West Indian 
species, belonging to Paramuricea and Acanthogorgia, are also described 
for comparison with the related species from our coast. 
ALCYONARIA. 
PENNATULACEA. 
Pennatula aculeata Danrerssen & Koren. 
Pennatula aculeata DANIELSSEN, Forhandl. Vidensk.-Selsk., Christiania, 1858, p. 25; 
Fauna Littoralis Norvegie, III., 1877, p. 86, pl. 11, figs. 8, 9. 
Vernriti, Amer. Jour. Sci., V., 1878, pp. 5, 100; XXIIL., 1882, pp. 310, 315, 
Smitu & Harcer, Trans. Conn. Acad., III., 1876, p. 54. 
Pennatula phosphorea, var. aculeata Sars; K6.L1KeR, Alcyonarien, I., Pennatuliden, 
1870, p. 154, pl. 9, fig. 73. ; 
Pennatula Canadensis Wuitraves, Ann. & Mag. Nat. Hist., X., 1872, p. 346. 
Plate I. Figs. 2, 2a. 
This species varies considerably in form, according to the state of expansion. 
The stem is somewhat larger and bulbous at the end, and sometimes the swell- 
* In the Reports of the U. S. Fish Commission. 
