The Echinodermaia of Jdeiv (Brtmsimck 
6. Ophioglypha robusta, (Ayres), Lyma>s^. OjMolepis 
rohusta, Ayres (D). [See Plate, Fig. 3a\] 
Description. (J) p. 45, (U) p. G2. 
Figure. (F) pi. I. \pmder name Ophiura squamosa^, (U) 
pi. IV. 
Distribution. {a) General; — Low-water mark to 150 
fathoms. Massachusetts Bay to Greenland, Arctic Ocean, 
Northern Europe, Alaska. 
(6) In N. B. ivaters; — Grand Manan, low-water mark and 
laminarian zone, abundant, Stimpson, (D). Eastport, low- 
water to twenty fathoms, frequent, Ferr?7/, (L), (N). East of 
Campobello, 100 to 125 fathoms, Verrill, (N). Gulf of St. 
Lawrence, “ very sparingly met with,” Whiteaves (P). 
Tliis species reseml)les somewhat 0. Sarsii, but is much smaller 
and differently colored. The disk is one-third of an inch in diameter 
and covered above with regularly arranged and nearly equal scales. 
The mouth has seven papilhe to each angle. The arms are one and 
one-fourth inches long, tai)ering to mere threads. The upper arm- 
plates are diamond-shaped with rounded angles ; side arm-plates meet 
below but not above until half w’ay out on the arm ; each bears three 
rounded, tapering, sharp spines, of which the upper is the largest. It 
varies greatly in color ; it may be grey, variegated with red or black, or 
browm or even blue. It lives either upon rocky or mud bottoms, seem- 
ing to prefer the former. Nothing is known of its halnts or develop- 
ment. 
7. Opliioglyplia Sarsii, (Lutken), Ly'man. OpMolepis 
ciliata, MuLL. et Trosch. (D). [See Plate, Fig. 3^.] 
One of the “ Brittle-Stars.” 
Description. (J) p. 41, (U) p. 60. 
Figure. (F) pi. I., (U) pi. IV. 
Distribution, {a) General; — Low-water mark to 1,600 
fathoms. South of 40° N., to Greenland and Davis Strait, 
Northern Europe to Great Britain, Alaska. 
(6) In N. B. waters; — Grand Manan, sixty fathoms, mud, 
Btimpson, (D). Eastport, large, not common, fifteen to twenty 
fathoms, stones, Verrill, (L), (N). Bay of Fundy to east of 
Campobello, 100 to 125 fathoms, Fem7/, (N). Abundant on 
southern coast in ten fathoms, Ganong, (X). Very abundant and 
