550 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [48] 
Ophioscolex quadrispinus Verrill. 1884. Figs. 56, 56a, 56b. 
B. range, 101 to 234 fathoms (101 fathoms, off Nova Scotia, 1883). 
Rare. 
Disk swollen; arms five, long, attenuated distally. The disk and 
base of arms are covered with a thick soft skin, with close wrinkles or 
small rounded verruce above, becoming concentric and radial wrink- 
les beneath, but beyond the basal part of the arms becoming smoother 
and thinner, concealing the feebly developed arm-plates. Arm-spines 
four, or alternately three and four, near base of arms (three in young 
examples), nearly equal, rather stout, tapered; lower ones blunt; upper, 
acute in part, scarcely as long as the breadth of the arm. Tentacle-scale 
small, tapering, acute; teeth, six to eight or more, rather slender, 
acute, often in pairs; mouth-papille, small, slender, acute, unequal, 
eight to ten on a side of each angle, besides two or three larger ones 
outside of the second mouth-tentacle and one within the slit at the first 
mouth-tentacle; the outer papille in large specimens are crowded so as 
to form two or more rows. Large examples have the disk 14™™ in diam- 
eter; length of arms, 70™™. Stations 1121 and 2069; also Gulf of Maine, 
station 38, in 112 fathoms, 1878. 
Hemieuryale tenuispina Verrill. 1885. 
Astronyx? tenwispina Verrill, Amer. Journ. Sci., vol. 28, p. 219, 1884. 
B. range, 1,362 to 2,033 fathoms, 1883. Locally abundant on Scleroptt- 
lum gracile V. 
The disk is covered with thin roundish scales, visible when dried, 
without granules; radial shields prominent distally; arms with small 
scales above, and larger prominent ones along the sides; spines three, 
the upper longest; tentacle-scales small, spiniform; mouth-shield small, 
rhombic; mouth-papille several; small, in a regular row. 
Astrochele ITymani Verrill. 1878. Fig. 53. 
B. range, 264 to 1,608 fathoms; 407 to 1,608 fathoms, 1883. Abundant 
on Acanella., 
Astronyx Loveni Miiller and Troschel. Figs. 54, 54a, b. 
- B. range, 787 to 1,362 fathoms (843 to 1,362 fathoms, 1883). Common 
on Pennatulacea. 
Gorgonocephalus Lamarckit Lyman. 
Astrophyton Lamarckii M. & Tr., Syst. Ast., 1842. 
B. range, 150 to 300 fathoms (194 fathoms, 1882; 239 fathoms, 1883). 
Common off Nova Scotia on Alcyonaria. 
CRINOIDEA. 
Antedon dentata (Say) Verril. Fig. 58, young. 
B. range, 69 to 640 fathoms (69 to 487 fathoms, 1883), Common; 
sometimes abundant locally. 
