212 TBREBELLIDES STRGEMI. 



1915. Terebellides stromi, Mcintosh. Ann. Nat. Hist., ser. 8, vol. xv ; p. 41. 

 » » ,, Allen. Jonrn. M. B. A., vol. x, p. 636. 



» ,, stroemi, Southern. Irish Sc. Invest., No. 3, p. 47. 



1916. „ stromi, Mcintosh. Ann. Nat. Hist., vol. xvii, p. 59. 



191 7. „ stroemi, Hessle. Zool. Bidr. Uppsala, Bd. 5, p. 137. 



Habitat. — Stomach of haddock, St. Andrews (B. M.) ; dredged in 4—5 fathoms, 

 Ardmaddy Bay, Lochmaddy, in tenacious grey mud (and clay) ; Plymouth (Allen), Loch 

 Long (D. Robertson) ; dredged in the " Porcupine " Expedition, 1869, in 30—40 fathoms, 

 Dingle Bay, Ireland; young example in 422 fathoms, No. 15, " Porcupine," 1869 (54° V N., 

 12° 14' W.) ; West Coast of Ireland, Clew Bay, etc. (Southern). A cosmopolitan form. 

 Abroad it has been found off Kerguelen (Bhlers), Japan (Hessle), North Pacific Coast of 

 North America (Moore), Behring's Sea (Marenzeller), Atlantic (Grube, etc.), Greenland 

 (Michaelsen, Ditlevsen, etc.) ; Northern regions, such as Greenland, Spitzbergen, Norway, 

 Iceland, etc. (Sars and Malmgren) ; off Cape Guardia and in 31 fathoms off Cape Finis- 

 terre and in Bono Bay, "Porcupine/' 1870; Siberian and Behring's Seas (Wiren) ; 

 Norway, Sweden and Finmark (Malmgren and Norman) ; Kerguelen, " Challenger " ; 

 Spitzbergen (Meyer); Kara-Havet (Levinsen) ; Adriatic (Grube); Mediterranean- 

 Naples (Lo Bianco) ; 300 fathoms off Norway (Sars, Wollebaak) ; Franz Joseph Land 

 (Augener); New England and Atlantic coast, U.S.A. (Verrill) ; Strait of Magellan 

 (Grube, Bhlers, Mcintosh) ; Arctic Sea (Marenzeller) ; White Sea (Ssolowiew) ; West 

 Indies (Augener). 



The cephalic region is almost as blunt as in Trichobranchus, though the great elevation 

 of the frilled cephalic plate is characteristic, since it rises from a slight collar high above 

 the dorsal outline and has a boldly folded margin, the two sides meeting in the middle 

 line interiorly and forming a spout-shaped channel, the sides of which behind the mouth 

 in some are thickened. The cephalic plate thus has the surfaces directed anteriorly and 

 posteriorly instead of dorsally and ventrally as in Poly cirrus and other forms. The edges 

 of the plate posteriorly give origin to the tentacles, which are of a pale flesh colour, 

 grooved, often spoon-shaped, and, though not stretching much, coil actively in every 

 direction. 



The body is enlarged in front and gently tapers to the tail, which is by no means 

 slender. It is smoothly rounded on the dorsum, and only in well-preserved examples 

 are the lines of the segments indicated. On the other hand the ventral surface presents 

 anteriorly bold glandular belts — the representatives of the scutes of other members of the 

 family. Besides, a great glandular semicircular lamella is placed immediately behind the 

 spout-shaped fold of the cephalic plate, separates the oral from the succeeding region, 

 and is evidently of great physiological importance. A narrow glandular ring follows, 

 the convex central region, being in some separated by a furrow from the lateral regions, 

 which diminish as they go outward. A broader ring, the second body-segment, which 

 bears the branchiae dorsally, then follows, the central region, likewise marked off by two 

 furrows from the lateral regions. This is partly overlapped by the broad glandular belt 

 which stretches from side to side of the next segment, and gives off the setigerous 

 process at each side. Four similar ventral belts follow — diminishing as they go, and 



