"W. C. M'INTOSH ON BEITISH ANNELIDA. 383 



it scarcely reaches halfway to the tip of the peculiarly curve'd terminal hook. The 

 bristles throughout are faintly yellowish. 



This diifers from Parmenis Ijungmani in the proportional strength and structure of 

 the dorsal bristles, and in the pale semitranslucent condition of the scales; but the 

 ventral bristles approach each other closely. 



Haemothoe antilopes, n. s. Fu-st procured in 1865, at Lochmaddy, North Uist, and 

 off the Hebrides, as well as frequently in the ' Porcupine ' Expeditions. 



Body moderately elongated, from three quarters to nearly an inch. Bristle-bearing 

 segments aboiit thirty-six. Head with the anterior angles characteristically truncated. 

 Two comparatively large and somewhat widely separated eyes occur near the posterior 

 border. In good preparations the anterior pair are not visible from the dorsum, as 

 they occupy a position immediately beneath the truncated anterior angles of the snout. 

 Median tentacle moderately long, slightly enlarged below the filiform tip (in spirit), 

 and covered with clavate papillae. The latter also occur on the antennae, which are 

 small and subulate, and lie beneath the level of the former. The palpi have minute 

 papillse, which toward the termination are dilated and then constricted below the 

 slightly warty tip. The tentacular cirri are somewhat enlarged below the extremity, and 

 covered with long cilia having bulbous tips. Moreover these organs are continued a 

 considerable way (about one third) on the filiform termination above the enlargement. 

 The dorsal cirri, again, resemble the latter ; and their cilia reach within a short distance 

 of the tip — a rather unusual arrangement. The ventral cirri are slightly enlarged at 

 the base, have sparsely distributed short papillse ; and the tips of the organs reach the 

 exit of the nearest bristles. 



Only one specimen had scales, which seem to amount to fourteen or fifteen pairs. 

 All are fringed, chiefly along the outer border, with long filiform cilia with somewhat 

 enlarged tips. The papillEE on the surface are large and boldly marked, the dilated 

 tips being formed of blunt processes or spines. A slight brownish coloration occurs on 

 the dorsal surface where they touch each other ; but the rest of the scale is pale, except 

 from the minute brownish spines of the papillse. 



The dorsal branch of the foot carries a series of conspicuously long and strong 

 bristles, most distinctly marked by transverse spinous rows at rather wide intervals 

 (whence the name of the species, from the resemblance of these organs to the horns of 

 certain Antelopes, such as Ilippotragus oryx). Those next the ventral series are long 

 and nearly straight, while the inner are shorter and distinctly curved. One of the 

 larger is represented in PI. LXIX. fig. 4. The bristle tapers much distally; and by 

 careful adjustment the spinous rows on the opposite side are brought out, as at ac. 

 Such a bristle, of course, is not round, but conspicuously angled, apparently broad 

 posteriorly and thinned, with a curve to the edge. The ventral bristles, again, are 

 rather short and fine, commencing superiorly with a series having a long tapering 



