PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 169 



several divergent clusters of capillary setee, a group, sometimes of six to 

 eight, long, stout, spine-like, dark brown, acute and barbed setoe, liaving 

 several short reciu'ved hooks on each edge of the flattened tips, near the 

 end. The ventral rami of the parapodia are prominent and bear three, or 

 more, stout, elongated, brown set^ne, with sharp, somewhat recurved tips, 

 which are covered along the convex side with slender, sharp spinules; 

 at the end of the straight shaft, and separated by a naked space from 

 the spinulated portion, there is a strong, sharp, divergent spine. Length 

 of a medium-sized specimen, 32'°'"; breadth, exclusive of seta^, IS"^'"} 

 length of. palpi, T"^"". 



Common on muddy bottoms in the Bay of Fundy and Gulf of Maine, 

 in 50 to 150 ftithoms. Collected first in 18G4, 1865, and 1868, by the 

 writer and Professor S. I. Smith, and subsequently by the U. S. Fish 

 Commission, in many localities. 



It differs from L. Jilicornis, with which it was formerly identified by 

 me, not only in having a much smaller median antenna, but also in the 

 character of the setce, especially those of the ventral fascicle. Whether 

 the Gulf of St. Lawrence specimens, recorded by M'Intosh as L. fiU- 

 cornis, belong to this species, is uncertain. 



Hunoa spinulosa, sp. nov. 



Body large, oblong, rather narrow, of nearly equal breadth through 

 the greater j)art of its length. Head dark, deeply bilobed in front, the 

 sides rounded ; each lobe terminates in an anterior, acute, white point. 

 Eyes large, lateral, the anterior farther apart than the posterior. Median 

 antenna rather small, about twice as long as the head, tapering to a 

 slender point; lateral antenna smaller and about half as long as median; 

 palpi moderate, smooth, much stouter and longer than the antennae; 

 tentacular and dorsal cirri long, slender, covered with numerous slender 

 papilla?. Scales large, broad, rounded-oblong, the posterior part being 

 produced and broadly rounded, the surface covered with minute, rounded 

 grains and toward the border with very small, elongated, tapering, acute 

 spinules ; outer edge fringed mth numerous small, slender papillae. 

 Setai yellow, very abundant, forming large, dense tufts. Those of the 

 Tipper parapodia are in part as long as those of the lower, and much 

 stouter; the upper ones are shortest, unequal, stout, curved, spine-like, 

 acute, finely and closely transversely serrulate throughout most of their 

 length, only a very small tip being smooth ; below these there is a group 

 of longer and smoother spine-like setje, the serrulation less distinct and 

 not extending so far toward the base nor so near to the tip. The ventral 

 parapodia have very numerous setje, less than half as thick as the upper 

 ones, but the longest about equal to or somewhat exceeding those of the 

 upper fascicle ; they are all of one general form, decreasing much in 

 length toward the lower side; the shaft is long and smooth, the distal 

 portion enlarged, somewhat curved, closely spinulated, ending in a short, 

 smooth, shghtly incurved, acute tip. Length (a few posterior segments 



