W. C. M'INTOSH ON BRITISH ANNELIDA. 379 



form, with the exposed parts almost uniformly black. The third are also very dark, 

 with a few minute pale points. The latter increase in size in the succeeding scales ; 

 and the pigment becomes less dai'k as we proceed backward, the posterior scales being 

 mottled like granite. The scales increase in size from before backward, the last pair, 

 however, being diminished, especially in breadth. The dark anterior scales have a 

 peculiar sheen in certain positions, and microscopically have the best-marked papillae, 

 a few of which project at the posterior edge as short clavate processes. None of the 

 latter occur on the edge of the posterior scales. 



The superior branch of the foot has a short cirrus, the tip of which just reaches the 

 extremity of the bristles in spirit. It is almost cylindrical, except near the tip, where a 

 gradual diminution occurs. The surface is furnished with a few stout clavate papillae, 

 best developed just beneath the filiform part at the extremity. The inferior cirrus has 

 an enlarged base, reaches a little further than the insertion of the inferior ventral 

 bristles, and has a few clavate papillae. 



The bristles are comparatively short. The dorsal branch of the foot has a series of 

 somewhat short and not very stout bristles, slightly curved, and finely serrated in the 

 usual manner. The tips are peculiar, being fashioned rather like a blunt harpoon or 

 paper-scraper, as represented in one of the larger examples (PI. LXVIII. fig. 1). Tiie 

 spinous rows at the upper part stand out characteristically at a greater angle than usual. 

 The ventral bristles are translucent, with comparatively short spinous tips, and are boldly 

 bifid, but after a different manner from the attenuated divisions of Parmenis Jjungmcmi. 

 One of the superior series is shown in PI. LXVIII. fig. 2 ; and it is noticed that both 

 terminal divisions are somewhat blunt when contrasted with a bristle from the inferior 

 series (PI. LXVIII. fig. 3). 



This species, then, presents the following differences from Parmenis Ijungmani. The 

 body is larger and broader, the segments thirty-seven, instead of thirty-five or thirty-six, 

 the anterior eyes are situated very much in front of those in Malmgren's form, being 

 almost at the tip of the pointed anterior lobes. The scales are fourteen pairs instead of 

 fifteen ; but this is not of much consequence. The dorsal bristles are slightly thicker 

 than the ventral, and have the peculiar tips, and the ventral differ in structure — features 

 diverging from Malmgren's species. Some of these characters may be exaggerated, 

 owing, perhaps, to the want of scientific accuracy in Malmgren's artist ; and there are 

 many points of similarity between them, so that, unless the bristles had diverged so 

 much, I should have been inclined to unite them. 



Harmothoe zetlandica, n. s. Dredged in 5 fathoms, amongst the tangle-roots, in 

 Bressay Sound. The specimens are small, about half an inch long, with an elongated 

 and somewhat linear body, consisting of about thirty-five bristle-bearing segments. The 

 colour in spirit is uniformly jmle yellow, the scales having only a few pale touches. 



The head has two pointed anterior lobes, and very distinct eyes. The posterior pair 

 VOL. IX. — PAKT VII. January, 1876. 3 f 



