NOTOCIRRUS SCOTICUS. 401 



than Lumbriconereis fragilis. It has a moniliform or deeply segmented appearance, the 

 enlargements occurring at the feet. It diminishes to a tapering tail posteriorly. The 

 typical foot has a small dorsal lobe (cirrus) in which is a single vascular loop. Setigerous 

 region beneath is supported by two strong spines, and the brittle bristles have compara- 

 tively short, broadly winged tips, boldly serrated at the edges. A small lobe or papilla 

 also appears ventrally. 



This genus was included under the eighth family of Kinberg's Eunicea (Laidea), 1 

 and was characterized by the presence of an entire cephalic lobe, devoid of eyes. 

 Branchiee (cirri dorsuales) and ventral cirri mamilliform. 



Synonyms, 



1869. Notocirrus scoticus, Mcintosh. Trans. Hoy. Soc. Edinb., vol. xxv, p. 417, pi. xvi, f. 17,, a } b. 



idem. Rep. Brit. Assoc. (1868), p. 337. 

 1903. „ „ idem. Ann. Nat. Hist., ser. 7, vol. xi ; p. 564. 



Habitat. — Dredged in tenacious grey clay in nine fathoms in Ardmaddy Bay, Loch- 



Fig. 82. — Transverse section of Notocirrus scoticus about the anterior third. 



maddy, North Uist, in 1865 (W. C. M.), and subsequently in several parts of the Hebridean 

 seas by that veteran naturalist, the late Dr. Gwyn Jeffreys. Also in 100 fathoms in St. 

 Magnus Bay (J. G. J.). Irish Sea off Peel, July, 1879 (W. C. M.). It was met with in 

 the ' Porcupine ' Expedition of 1869 in 80 — 110 fathoms in muddy sand with pebbles. 



Head (Plate LXII, fig. 9) acutely conical, with two distinct eyes at its posterior border, 

 where it is slightly contracted. The eyes are rather close to each other on each side of 

 the middle line. It is somewhat flattened from above downward in lateral view. Ventrally 

 a median depression goes forward from the mouth toward the tip of the snout. 



Body about 3 ins. in length, of a general reddish or reddish-brown colour, less 

 iridescent than Lumbriconereis fragilis. It is slender, tapered a little at the anterior end, 

 which has the segments more compactly arranged and generally thicker, diminishing 

 posteriorly. The greater part of the body has a moniliform or deeply segmented 

 appearance, the enlargements occurring at the feet. The cuticle is tough and minutely 

 punctate, from the presence of the apertures of what appear to be minute tubes, which, 

 when the cuticle is torn off, project internally as slender structures like hairs. 



1 ' Ofvers. Kongl. vet. Akad. Forhancll./ 1864, p. 571. 



108 



