166 
THE VOYAGE OF H.M.S. CHALLENGER. 
him.^ The great enlargement of the cephalic ganglion in this form is probably in con- 
nection with the development of the eyes. 
In his Annulata ffirstediana^ five species, chiefly South American, are described by 
Grube, and the same number in the Philippine series.® The latter, however, are in all 
probability littoral forms. No species is mentioned in the Annelids of the “ Gazelle.” 
Thirteen are described by Schmarda"* and nine by Kinberg,® but none come from great 
depths, the majority frequenting shallow water, and a few even being caught at the surface. 
The Phyllodocidse are common between tide marks ; and in the present collection 
none occur under 500 fathoms, that being the depth at which the new type {Genetyllis 
oculata) with the large eyes was dredged.® 
Phyllodoce, Savigny. 
Phyllodoce [Anaitis ?) sanctce vincentis, n. sp. (PI. XXVII. fig. 9 ; PI. XXXII. fig. 8 ; 
PL XIVa. figs. 14, 15). 
Habitat. — Dredged off St. Vincent, Cape Verde Islands, July 1873. 
A small and incomplete form, measuring 32 mm. in length, and at its widest part 
(about the middle) measuring 2 ‘5 mm. including the bristles. 
The dorsum is marked by a little brownish pigment in front, and there are traces of 
pigment-bars at the junctions of the segments throughout. 
The head (PI. XXVII. fig. 9) is somewhat altered by the extrusion of the proboscis, 
presenting a bluntly triangular shape, and having two large blackish eyes a little in front of 
the posterior border. Each is marked by a minute whitish speck, the indication of a “lens.” 
Anteriorly are four short subulate antennse. The contraction of the region succeeding 
the head makes it difficult to say whether the tentacular cirri follow the arrangement 
in Anaitis or Phyllodoce ; that is, whether they arise from three segments (Anaitis) or 
from two [Phyllodoce). These processes are of moderate length, and simply tapered. 
In the anterior region of the body the superior lamellae (the homologue of the dorsal 
cirrus) of the feet are borne on well-marked pedicles, and are large and lanceolate. The 
setigerous region is moderately produced and bifid. The bristles (PI. XIVa. fig. 14) 
have the terminal region of the shaft dilated and spinous. The distal division is rather 
long, gently tapered, and finely serrated. The spines along the edges of the dilated 
ends of the shafts are best seen in antero-posterior view (PI. XIVa. fig. 15). The 
1 Annel4s, t. ii. p. 113. ^ Vidensh. Meddel. f. d. nat. Foren. i Kj^henliavn, 1857-58. 
3 A.nnel. Fauna d. Pliilippinen. ^ Neue wirbell. Thiere, Ed. I. part ii. p. 82 et seq. 
* Ofversigt h. Vetensk.-Alcad. Fbrlumdl., Bd. iv. p. 240, 1865. 
® Prof. Moseley mentions {Quart. Journ. Micr. Sci., vol. xvii., N.S., p. 11, 1877) a bright green Eteone from 
1127 fathoms, lat. 41“ 57' N., long. 9° 42', but it was not forwarded with the others for examination. 
