[37] ALBATROSS EXPLORATIONS. 539 
Synapta brychia Verrill, sp. nov. 
B. range, 938 fathoms, station 2111, off Cape Hatteras, 1883. 
A large species, with a strong, thick, opaque purplish brown skin, as 
preservedinaleohol. Thestrong longitudinal muscles are lighter colored. 
The skin contains rather large, scattered, ovate plates, easily visible to 
the naked eye. They are perforated by numerous (seventy to eighty 
or more) small rounded openings, and have a central eminence, com- 
posed of several slender processes. Each plate bears a large anchor, 
its length equal to that of the plate. The shaft of the anchor is round 
and smooth, narrowed next the expanded end, which is surmounted by 
several rough or lacerate denticles: the flukes are long, sharp, smooth, 
strongly recurved, more than a third as long as the shaft. Many of the 
anchors project from the skin, and are large enough to be visible to the 
naked eye. Length, in alcohol, 160™™; diameter, 10™™, 
ECHINOIDEA. 
Pourtalesia Jeffreysit W. Thomson. 
B. range, 843 to 1,555 fathoms, 1883. Not uncommon. 
Aérope rostrata W. Thomson. 
B. range, 1,395 to 1,608 fathoms, 1883. Local and not common. 
Aceste bellidifera W. Thomson. 
B. range, 1,395 to 1,497 fathoms, 1883. Not common. 
Schizaster fragilis (Diiben & Koren) L. Agassiz. 
B. range, 374 to 321 fathoms (99 to 239 fathoms, 1883). Common; 
locally abundant. 
Schizaster Orbygnianus A. Ag. 
Schizaster canaliferus, variety, Verrill, this report for 1882, part x, p. 658. 
B. range, 65 to 179 fathoms (117"to 179 fathoms, 1883). Not uncom- 
mon ; local. 
Brissopsis lyrifera (Forbes) L. Agassiz. 
B. range, 65 to 1,555 fathoms (938 to 1,555 fathoms, 1883). Common. 
Urechinus Naresianus A. Ag. 
B. range, 1,309 fathoms, 1883. Local; gregarious. 
Echinarachnius parma Gray. 
B. range, 6 to 888 fathoms (35 to 888 fathoms, 1883). Common ; 
often very abundant in shoal water. 
Phormosoma placenta W. Thomson. 
B. range, 458 to 1,309 fathoms (499 to 1,309 fathoms, 1883). Com- 
mon. 
Phormosoma uranus W. Thomson. 
B. range, $43 to 938 fathoms, 1883 ; 568 to 1,080 fathoms, 1884. Not 
common; local and gregarious, 
