Actinaria G 117 



Five large specimens were also dredged by the " Blake" at Stations 303, 

 309, 310, in 304 and 260 fathoms, off southern New England. 



It was dredged at a large number of localities by the U.S. Fish Commission 

 parties from 1872 to 1887, in the deeper parts of the Bay of Fundy, in 50 to 

 109 fathoms; off Nova Scotia, in 50 to 100 fathoms; Gulf of Maine, in 50 to 

 150 fathoms; off Casco bay, in 40 to 90 fathoms; Massachusetts bay, in 40 

 to 52 fathoms; off Cape Cod, in 37 to 90 fathoms. Off Martha's Vineyard, 

 on the Gulf Stream slope, it has been dredged, often in abundance and of large 

 sizes, at many localities, in 160 to 500 fathoms, and sparingly in 65 to 100 fathoms, 

 in 1880 to 1887. 



A few specimens have been brought from the fishing Banks, off Nova Scotia, 

 by the Gloucester, Mass., fishermen. 



A closely related species (B. kerguelensis) has been described by Studer 

 from the Antarctic ocean, off Kerguelen island; and another, B. occidua, by 

 McMurrich from the Pacific. 



PARASITES AND COMMENSALS. 



We often found in the stomach of this species, a very remarkable parasitic 

 lernean crustacean (Antheacheres dubenii Sars). It is soft and usually pink in 

 colour, 'or like its host. The sexes differ much in form and both are often living 

 in the same stomach. 



We also occasionally found a large commensal orange coloured scaly 

 annelid (Polynoe aurantiaca Verrill) living among the long tentacles and agreeing 

 with them in colour. (See Verrill, op. cit., 1885, p. 514, pi. XXXVI, figs. 167, 

 168; pi. XL, fig. 175.) 



Eubolocera. New genus. 

 Type, Bolocera multicornis VERRILL, 1879. 



I propose to establish a new genus for this remarkable species, on account 

 of its short, broad form, with a multitude of mesenteries and tentacles, the 

 tentacles almost covering the very wide disk, and standing crowded in about 20 

 rows in the large specimens. The sphincter muscle is similar to that of Bolocera. 



The disk and tentacles are not retractile. The muscles of the mesenteries 

 are thin and feeble. 



Eubolocera multicornis Verrill. New name. 



Bolocera multicornis VERRILL, Proc. U.S. Nat. Mus., p. 198, Nov., 1879; Explor- 

 ations made by Albatross in 1883, Annual Report Comm. Fish and Fisheries, 

 for 1883, p. 536, [14] 1885. 



Plate XXIII; Figure 2. 



Eubolocera multicornis is a large, bright red species, or about red-lead 

 colour, with over 200 crowded tentacles, which are of moderate length, 14-18 mm. 

 long, or about equal to one-fifth the diameter of the disk. The tentacles are of 

 about the same colour as the column and not banded. The very broad disk of 

 the type is convex and about 3-75 inches (194 mm.) in diameter; total height 

 at centre is 30 to 33 mm. The column is very short and thick, much narrower 

 than the disk, when in full expansion. 



It was first known from off Cape Cod, on " Clarks Ledge," near Georges 

 bank, in 45 fathoms, later elsewhere off Cape Cod, in 33 to 90 fathoms, m 

 1881 and 1882. It doubtless lives also on the other more northern fishing 

 Banks, in rocky places. B. brevicornis McMurrich, from the Pacific, seems to 

 be a similar species. 



