REPORT ON THE ANNELIDA. 
397 
developed than in the previous species. There is, moreover, no notch above the ventral 
third in profile, and no minnt.e crenations along the dorsal edge. The ventral lobes of 
the marginal lamellae come very close to each other, since there is no median papilla 
projecting between them as in the former species. The flat ridge in the median line of 
the cephalic plate proceeds downward to the lamellar edge, and just before reaching it 
each lateral region spreads out to interrupt the adjoining furrow, while the median ridge 
passes to the edge, but, as before mentioned, does not project beyond it. The latter 
part of the ridge has a cylindrical outline. Transverse crescentric furrows mark the 
dorsal region of the cephalic plate, as in the previous species. 
In the succeeding region of the body, comprising in all eight segments, the somites 
possess white bands anteriorly, and the collar is developed in seven, commencing in that 
behind the buccal. There are twenty-three segments in front of the funnel. As in 
Maldanella antarctica, that behind the buccal has only a tuft of bristles ; the rest have 
hooks and bristles, with the exception of the three last (in front of the funnel), in which 
the papillse are unarmed. 
The hooks (PI. XXVa. fig. 12) approach those of the former species very closely, but 
the distal region is curved backward even more decidedly, the vibracular eminence is less 
jjrominent, and the entire crown somewhat differs in shape.. In some of the hooks from 
the posterior row the minute teeth above the third from the great fang are more evident 
than in those from the anterior segmezits. 
The funnel agrees in general with that in Praxilla, having about twenty-six broadly 
conical teeth, with a grooved anal projection or papilla in the centre, which does not 
appear to be a prolapse. 
The fine brownish mud in the intestine only contained a few rounded bodies 
with siliceous perforated capsules like those of Eadiolarians, an occasional sponge-spicule, 
and a Diatom. 
The tube is composed of the same brownish mud, but of a somewhat coarser descrip- 
tion than the foregoing. Thus it had larger round Eadiolarians, more massive sponge- 
spicules, a few Foraminifera, and coarser sand particles. 
The cuticle is extremely thin, whereas the hypoderm is comparatively thick, though 
its tissue is lax. The nerve-area is somewhat semicircular, with the rounded neural 
canal applied to the circular muscular coat superiorly. The oblique muscles are inserted 
above the outer edge of the area, and thus differ from those of Maldanella antarctica. 
The longitudinal muscles have similar proportions. The perivisceral corpuscles resemble 
minute mulberries, the spheres being composed of nearly equal globules, while the 
latter under a high power present more minute granules internally. 
The relations of the Clymene grossa of Dr. Baird,^ from the Strait of Magellan, are 
umnrtain. It may be connected with either of the foregoing species. 
* Journ. TAnn. Soc. Lond., vol. xi. p. 95. 
