164 SCOLECOLBPIS (LAONICE) CIRRATA. 



3. Scolecolepis (Laonice, Malmgren) cirrata, Stirs, 1851. Plate XOVII, fig. 5 — foot; Plate 

 XCVIII, figs. 3— head; Plate CV 5 figs. 4 and 4 a— bristle and hook. 



Specific Characters. — Head short, smoothly rounded on the broad anterior edge or 

 slightly bilobed. A somewhat triangular ridge with the base in front passes backward 

 and ends in a point posteriorly, from the apex of which a small subulate tentacle springs. 

 Eyes, two in number, one on each side of the ridge in front of the tentacle. Lamella at 

 the base of the long tapering palpi. Body about 1 — 2 inches in length, little tapered 

 anteriorly, so that with the shortness of the snout it has a truncated aspect. Dorsum 

 somewhat rounded, ventral surface deeply grooved from front to rear. It tapers to a 

 moderately slender tail, which ends in a cirrate margin with 12 — 15 long subulate cirri. 

 First foot carries a branchia and a large hatchet-shaped lamella, with a conical margin 

 superiorly and a somewhat straight border inferiorly. The ventral lamella is nearly as 

 large, bluntly conical superiorly and curving downward to a sharp angle inferiorly. 

 Dorsal bristles capillary, the long tuft being superior, the shorter inferior. 



Branchiae continue of considerable size to the twenty-fifth foot; the great dorsal 

 lamella remains nearly as at the tenth foot, and is almost reniform. The ventral lamella 

 is slipper-shaped, the broad end being uppermost, and both are free. The winged 

 hooks appear about the twenty-fifth foot, have a slight dilatation of the shaft above the 

 backward curve, then gradually diminish to the throat, from which the main fang comes 

 off at a little more than a right angle, and a single spike occurs above the crown. Two 

 slender capillary bristles are below the hook. The bristles become very long and 

 attenuate posteriorly, and wings are not evident. 



Synonyms. 



1861. 



)> 

 1865. 



1867. 

 1868. 



1851. Nerine cirrata, S'ars. Nyt Mag. f. Naturvid., vi, p. 207 (Reise i Lofoten og Finmark). 



Danielssen. Beise, 1858, Norske Vidensk. Skrift., iv, p. 118. 



idem. Fork. Vid.-Selsk. Christiania, p. 64. 



Danielssen. Reise, 1857, Nyt Mag. f. Naturvid., xi, p. 52. 



De Quatrefages. Annel., t. ii, p. 665. 



Malmgren. Annul. Polych., p. 91, Tab. ix, fig. 54. 



Sars. Vidensk.-Selsk. Forhandl., p. 10 (sep. copy). 

 1873. Scolecolepis cirrata, idem. Bidrag Christ. Fauna, p. 62. 



« » w Verrill. Rep. Fish and Fisheries U.S.A., p. 602. 



I 8 ? 5 - „ „ Ehlers. Zeitschr. f. wiss. Zool., Bd. xxv, p. 62. 



1878 - » » Mcintosh. Trans. Linn. Soc, ser. 2, Zool., vol. i, p. 506. 



1879. „ „ Tauber. Annul. Danica, p. 116. 



» » « Theel. Kougl. svenska Yet.-Akad. Handl., Bd. xvi, p. 53. 



1883. Nerine cirrata, Wiren. Chsetop. f Yega' Exped., p. 409. 



„ Spio „ Levinsen. Nat. For, Yid. Meddel., p. 100. 



1884. Scolecolepis cirrata, Webster and Benedict. Rep. Comm. F. and F., U.S.A., for 1881, p. 726. 



1885. „ „ Mcintosh. ' Challenger' Annel., p. 380. 



1886. Spio cirrata, Levinsen. Kara-Havets, etc., p. 9. 



1889. „ „ Marenzeller. Arch. f. Naturges., Bd. lv, p. 132. 



1894. „ „ Bidenkap. Christ. Yid.-Selsk. Forhandl., p. 95. 



