HARMOTHOE SPINIFERA. 327 



(1865) says it has forty-two to forty-four segments, but adds nothing of interest. H. 

 Lenz (1878) agrees with Mobius in considering that this form included Lxnilla glabra, 

 Antinoe Sarsii, and Evarne impar ; but, as already mentioned, this was due to insufficient 

 acquaintance with the group. 



Theel (1879) observes that while it is common on the west of Nova Zembla, he 

 found none in the Kara Sea. He also records his dissent from the view of Mobius and 

 Lenz, who included under this species Evarne impar, Antinoe Sarsii, and Lsevilla glabra, 

 the second being supposed to be the young stage of II. imbricata. I have already alluded 

 to this in the ' Challenger Report/ 1 The habits, for instance, of Evarne impar quite 

 differ from those of H. imbricata, the former being much more irritable and active. 



Kallenbach 2 gives an account of the minute structure of the scales of this species. 



Hornell (1891) alludes to the varied coloration of Harmothoe imbricata, e. g. as 

 striped with a median black band edged with pale border. He considers Theel is correct 

 in stating that only the largest examples possess any notable rounded processes on the 

 scales. 



2. Haemothoe spinifeea, Ehlers, 1864. 



Specific Characters. — Body narrow and elongate. Head elongated from before 

 backward, and the anterior peaks produced at the sides of the broad base of the median 

 tentacle. The anterior pair of eyes lie under these peaks, but are also seen from the 

 dorsum. Posterior eyes at the nuchal collar, dorsal, and nearer each other than the 

 anterior pair, from which they are separated by almost the entire length of the head. 

 Palpi of average length, brownish, with rows of small truncate papillae, which are some- 

 times bifid at the tip. Median tentacle with a broad base (ceratophore), a brownish 

 column (cerato style), a pale tip with little or no enlargement beneath, and numerous 

 clavate papillao. The lateral tentacles are inferior, subulate, and brownish. Tentacular 

 and dorsal cirri (which are short) brownish, furnished with a few clavate papillae, and 

 slightly enlarged below the pale tip. Ventral cirrus with a few clavate papillae. Scales 

 fifteen pairs, almost smooth at the margin, only a few small clavate cilia occurring in 

 some. A limited area towards the inner edge shows a series of spikes. First pair nearly 

 circular, brownish ; succeeding anterior scales reniform, blackish, with a metallic lustre ; 

 posterior scales mottled like granite. Bristles comparatively short, the dorsal slightly 

 curved, finely serrated, and with a short broad tip like a paper-scraper ; ventral bristles 

 with short spinous regions, and the smooth terminal part boldly bifid. 



Synonyms. 



1864. Polynoe spinifera, Ehlers. Die Borstenwiirmer, p. 96, Taf. iii, figs. 1 — 4 and 6. 



1875. „ crassipalpa, Marenzeller (?). Sitzb. d. k. Akad., 1875, p. 6 (sep. Abdr.). 



1876. Harmothoe Sibbaldii, Mcintosh. Trans. Zool. Soc, ix, p. 378, pi. lxviii, f. 1 — 3. 

 1880. Polynoe spinifera, Langerhans. Zeit. f. w. Zool., xxxiii, p. 275. 



1888. Harmothoe spinifera, De St. Joseph. Ann. des Sc. nat. (7), v, p. 171, Taf. xiv, f. 4. 



1 P. 58. 



2 ' Inaug. Dissert./ Jena, 1883, p. 23. 



43 



