ANTINOE SARSI. 365 



Genus XV. — Antinoe, Kinberg, 1857. 



Lateral tentacles arising under the base of the median tentacle ; cephalic lobe with 

 lateral peaks anteriorly. Palpi subulate, densely covered with minute papillse. Dorsal 

 bristles long and tapering, with well-marked spinous rows. Ventral bristles long and 

 slender, with elongated spinous regions and hair-like tips. Segmental papillae distinct 

 though not large. 



This genus approaches Harrnothoe. 



1. Antinoe Saksi (Kinberg), Malmgren, 1865. 



Specific Characters. — Head about as long as broad, with two acute anterior peaks. 

 Two posterior eyes, nearer each other and smaller than the anterior, which are situated 

 within the dorsal margin of the widest part of the head, and considerably removed from 

 the anterior peaks. Median tentacle brownish, tapering, with a long filiform tip and 

 numerous long clavate cilia. Lateral tentacles with short clavate cilia. Palpi long and 

 tapering, with minute clavate papillae, often with processes on the blunt tips. Tentacular 

 cirri with very long slender tips and numerous clavate cilia of moderate length. Body 

 somewhat broad, most distinctly tapered posteriorly, segments thirty-eight ; dorsally of a 

 brownish hue — in various transverse belts posteriorly. Scales, fifteen pairs, ovoid or 

 rounded, soft, rather opaque, and with cilia of moderate length on the outer and 

 posterior borders, while some show minute conical spines on the surface. Dorsal 

 division of the foot with a prominent spine, and rather long, slightly curved tapering 

 bristles with well-marked spinous rows, which in profile occupy half the bristle, only a 

 minute portion of the tip being bare. The ventral division has a very prominent 

 spinigerous lobe, and a series of slender bristles — with long spinous regions and hair-like 

 tips. Dorsal cirri long, tapering, with a filiform tip, and the surface has numerous short 

 clavate cilia. The ventral cirrus is subulate, rather long, and with short clavate cilia. 

 Segmental papilla begins on the fifth foot. 



Synonyms. 

 1865. Antinoe Sarsi (Kbg.), Malmgren. JNTord. Hafs-Ann., p. 75, tab. 9, fig. 6. 



1871. „ „ Elilers. Spitzb. Annel., Ann. Nat. Hist., 4th ser., viii, p. 53 (transl. from Sitzb. 



d. Phys.-med. Soc, Erlangen). 



1873. „ „ Sars. Bid. Christ. Fauna, p. 5. 



1874. „ „ Mcintosh. Ann. Nat. Hist., April, 1874, p. 263. 



1875. „ „ Ehlers. Annel. < Porcup./ 1869, p. 33, Taf. ii, f. 3 and 4 (Zeitsch. f. w. Zool., 



xxv, p. 53). 

 1879. Polynoe Sarsi, Theel. Annel. Nova Zemb., p. 16. 



„ Antinoe Sarsi, Tauber. Ann. Danic, 80. 

 1886. „ „ Marenzeller. Porif., &c, Jan Meyen, p. 12. 



Length of largest about If inches. 



Habitat. — In the 'Porcupine' Expedition of 1869 it occurred at No. 28 (July 

 5th, 1869), in 1215 fathoms on mud. 



