548 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [46] 



OpMacantha gracilis Verrill, sp. nov. 



B. range, 220 to 858 fathoms, mostly off Nova Scotia, ou Gorgoniaus. 



A small, delicate species, with long, slender, attenuated arms. Disk 

 round and full, covered with relatively large, easily visible scales, each 

 of which bears a rather large and high columnar spinule, a little en- 

 larged at the summit and terminated by five or six or more, slender, 

 shariD, divergent points. Arm-spines along most of the length of the 

 arm, four or five, short for the genus, being about half as long as an 

 arm-joint; the small upper one is tapered; the lower ones are stouter, 

 rough, blunt, and hooked at the end; the lowest is largest and most 

 hooked ; on the two joints next to the disk the five spines are much 

 longer, very slender, tapered, acute ; the two upper ones twice as long 

 as an arm-joint. Tentacle-scale, small, spiniform ; mouth-papillse few, 

 about three on each side of a jaw, besides a larger, odd, terminal one ; 

 the lateral ones are small, spiniform; the two outer ones stand a little 

 back from the slit, like tentacle-papillae ; mouth-shields small, narrow, 

 rounded without; acute, angular within; side shields, large, angular; 

 ventral arm plates widely separated, elongated, rounded on the outer 

 edge ; the inner end with an angular median point. Diameter of disk, 

 3.5™'" ; length of arms, about .22"'°^ Probably young, but very unlike 

 the young of any of our other species. 



OpMolebes Acanellce Yerrill, Amer. Journ. Sci., February, 1885. 



B. range, 91 to 122 fathoms, off IsTova Scotia. 



Disk rounded, smaller, covered above and below with rather large 

 globular or capitate stumps, minutely spinulose at the end. Arms short* 

 Arm-spines at base of arms, six or seven, short, obtuse, rough, with 

 small spinules; the four lower are shorter and stouter than the upper 

 ones, with a blunt or clavate, jough, thorny tip ; the upper ones are 

 more cylindrical, but mostly blunt, shorter than the breadth of the arm- 

 joint; the lower groups of three or four spines extend nearly to the 

 mouth-angles. Mouth-papillse, three or four on each side, small, nearly 

 equal, rounded, obtuse. Diameter of disk, 6«"^. Station 2071, on Para- 

 muricea horealis, in 113 to 122 fathoms, off ]S"ova Scotia. 



OpMopliolis aculeata Gray. . 

 B. range, shore to 1,000 fathoms (18 to 1,000 fathoms, 1883). Very 

 common and widely diffused as far south as off Cape Hatteras. 



Amphiura Otteri Ljiingmann (?); Lyman. 



B. range, 182 to 1,608 fathoms (487 to 1,608 fathoms, 1883). Not 

 uncommon. 



In this species the disk is covered with small scales, above and below; 

 the radial shields are elongated, wedge-shaped, with a narrow group 

 of scales between their divergent and tapered inner ends. The amis 

 are very long and rather slender, flattened, usually with about six 

 spines toward the base, but in large specimens there may be as many 

 as eight; they are moderately long, tapered, and, except the upper 



