EEPORT ON THE ANNELIDA. 
349 
muscle on each side, and the increase of the muscular fibres over the nerve-area. The 
latter by means of a dorsal process touches the inner surface, but on each side of this 
pedicle the muscular fasciculi cover the arch. The example is softened, and therefore 
the necessary conditions for accuracy are absent. 
The Glycera mertensii of Grube,^ from Laventuka, seems to approach the foregoing 
in regard to the foliaceous condition of the feet. 
Hemipodus, De Quatrefages. 
Hemipodus {?) magellanicus, n. sp. (PL XLII. figs. 11-15 ; PI. XXIIa. figs. 12-15 ; 
PI. XXXVa. figs. 5, 7). 
Habitat. — Dredged in considerable numbers in the Strait of Magellan, at Station 
306a, January 2, 1876; lat. 48° 27' S., long. 74° 30' W.; depth, 345 fathoms; bottom 
temperature 46°'0, surface temperature 57°’5 ; sea-bottom, blue mud. 
Also at Station 310 (in the Strait of Magellan), January 10, 1876 ; lat. 51° 27' S., 
long. 74° 3' W.; depth, 400 fathoms; bottom temperature 46° '5, surface temperature 
50°'5 ; sea-bottom, blue mud. 
The larger specimens appear to range in length from 65 to 70 mm., with a diameter 
(across the bristles) at the anterior swelling of 5 mm. 
The species is broadly characterised by its somewhat dusky hue, the bulky snout, 
boldly marked with pigment, the large tentacles, short densely villous proboscis, and the 
structure of the feet and bristles. 
In the preparations the body shows a short dilatation a little behind the snout, and 
it tapers from this point to the tail. The diminution anteriorly, again, is somewhat 
abrupt, and the short truncated snout with its pigment gives the region a characteristic 
appearance. 
The snout is separated from the body by a marked circular constriction, and consists 
of a great basal ring and five terminal. The basal ring is encircled posteriorly by a 
deep brownish pigment-belt, which in the median line, dorsally and ventrally, sends 
forward a broad process extending to the anterior border of the second ring. No trace 
of an eye is present, but the lateral region at the base of the snout has on each side a 
large pale patch. On the ventral surface, again, a very distinct pale speck occurs on 
each side, just behind the second ring. The next four rings are minute ; the fifth is 
truncated anteriorly and bears the four tentacles, which are the largest (comparatively) 
in the group. Two spring from the dorsal and two from the ventral margin of the 
truncated snout. Each is a simple subulate process without a trace of articulation. The 
1 Jahrb. schles. Gesellsch., 1868, p. 5 (sep. Abd.). 
