80 Notes from the GaKi/ ^farine Lahorafory. 



dark band indicates the mouth and is continued a short 

 distance behind it. 



Since tlie original description in 1873 *, an account of the 

 species under the name Cosmocephala curdiceps, M. Sars, has 

 been |inblislied by Jensen f from the IMS. of the ehler Sars, 

 who found an example at low water in j\Iarch 1837, and who 

 left excellent sketches of the animal and of the dorsal and 

 ventral surfaces of the snout ; so that there can be no doubt 

 that this indefatigable and experienced naturalist had the 

 same form before him, though his example was less massive 

 than the present. These figures of the external characters 

 are in contrast with Burger's, which only indicate the general 

 reddish stone-colour and a pointed snout without differentia- 

 tion. His description of the ccj)halic grooves and furrows 

 coincides in most respects with the foregoing account, though 

 the somewhat cruciform arrangement of the pale streaks in 

 front of the ventral aspect of the snout and the pale marginal 

 line I were not marked in the British forms. From the 

 description of Girard § it would seem that the genus Cosine- 

 cejjhala, Stimpson, would include the present form, which, 

 however, may be left under the genus Ampfiijwrus. Repre- 

 sentatives occur on the coast of the United States and at 

 Behring's Strait, as well as in Europe, if the American 

 authors are correct in their diagnosis. Sars's example appears 

 to have been more deeply pigmented on the dorsum than 

 either of the British or than the reddish type found by 

 Joubin. Hubrecht, again, found it at Naples, while Girard 

 met with it on the N. American shores (his Hallezia hastata) 

 and Joubin in 35 metres off Roscofl'. Burger || observes that 

 it is not uncommon at Naples, 



The anterior region of the proboscis is slightly pinkish, and 

 the stylet-region, as in the Zetlandic example, had four 

 stylet-sacs in a horizontal plane, each having two stylets, one 

 M'ith a finished "head," the other about as long but with an 

 incomplete " head." 



In sections ^ towards the tip of the snout, two and some- 

 times three large vascular chambers occur in the centre, 

 apparently over the mouth. The fibres surrounding these 

 pass off or radiate into the tissues, which are highly con- 



* Brit. Annpl. : Part I. Nemerteans, Ray Soc. p. 102. 



t Turbell. ad lit. Norvpgise, Bergen, 1878, p. 82, tab. viii. figs. 13-lG. 



X Jensen, pi. viii. fig. 16. 



§ Ann. des Sc. Nat. 1^ ser. tora. xv. p. 248. 



jl Die Nemert. Nean. p. o(>J, Taf. 2. fig. 20 (1895). 



*!, Mr. 11. M. Craig liiudly made sections of this species. 



