REPORT ON THE ANNELIDA. 
101 
absent. The ventral cirrus is a tapering subulate process extending about as far outward 
as the setigerous lobe of the foot. It has a few clavate papdlee. Both it and the dorsal 
are readily detached. The ventral papilla is a small process directed between the feet. 
The dorsal division of the foot has a series of rather long dull yellowish bristles, 
the outer, or those nearest the ventral, being very long and attenuate ; indeed, with the 
exception of the short forms, all possess a much tapered and rather straight terminal 
region, so that the bristles (PI. VIIIa. fig. 12, an intermediate one) are comparatively 
slender and translucent. The rows of spines are fairly developed. 
The ventral branch carries a dense group of slender bristles with attenuate spinous 
tips, the latter being bifid, though superiorly and inferiorly this feature is not very 
evident. The secondary process is minute and nearly in the long axis of the bristle 
(PI. YIIIa. fig. 13, representing an average example). They are semitranslucent, and 
for the size of the species are very delicate. 
The body seems to be loaded with male reproductive elements, and the proboscis 
projects posteriorly from the fragment. 
Transverse section demonstrates that the dark pigment invades the entire hypoderm 
and forms a thick layer on the dorsal arch of the body, especially at the outer border 
of the dorsal longitudinal muscle. The nerve-cords are large and rounded, resting below 
on the hypoderm, and bounded internally {i.e., dorsally) by connective tissue. In the 
section the ventral area (containing the cords) projects considerably, so that a horizontal 
line opposite the oblique muscles would leave them external. The hypoderm within 
the chitinous lining of the proboscis is as deeply tinted with pigment as that surrounding 
the body, and consequently the nerve-cords of the organ (which abut on the muscular 
layer) are unusually conspicuous. 
The Hermadion fidigineum of Dr. Baird, from the Antarctic Expedition, is an 
allied form probably referable to the same genus, and diverging from Hermadion 
proper. The position of the eyes, which are situated quite differently, and the structure 
of the ventral bristles, which are much more elongate, at once discriminate the species. 
The same blackish -brown body characterises both. In another preparation, while the 
position of the eyes remains the same, the inferior ventral bristles are somewhat shorter. 
Eupolynoe, MTntosh. 
Eupolynoe mollis, MTntosh. 
Eupolynoe mollis, MTntosh, Ann. and Mag. Nat. Hist. ser. 4, xvii. p. 319, 1876. 
Polynoe mollis (M‘L), Gruhe, Annelidenausbeute von S.H.S. “Gazelle,” p. 513. 
Eupolynoe mnllis, Transit of Venus Exped., Phil. Trans., extra voL, 1879, p. 259, pi. xv. figs. 5-9. 
Habitat . — A fragment of the anterior end occurred at Station 149 (Boyal Sound, 
Kerguelen), January 18, 1874 ; depth, 100 fathoms. 
