REPORT ON THE ANNELIDA, 
241 
The differences just noted in the bristles are borne out by an examination of the dental 
apparatus, for though this has been crushed, apparently by the dredge, sufficient remains 
for identification. The maxillae have eleven larger translucent hard tips, and the basal 
ridges do not correspond. The spathulate processes posteriorly are broader. The outer 
line of the brown horny dentary region of the great plates forms a bluntly angular 
projection instead of the straight line which characterises the former. The left plate has 
four, the right five, teeth. The outer lateral plate in front is considerably larger, and 
instead of a single long inner tooth, there are two (both shorter). Moreover, the adjoining 
posterior plate has a process which projects forward into the notch between the two teeth. 
The inner lateral plate has a shorter tooth than in the former species. The dentary surface 
of the mandibles presents ventrally a crescentic aspect, with a V-shaped median notch. 
The outer tips are black, and from them a brownish veined band curves from side to side. 
In the intestine are little sand masses containing numerous GlohigerincB and other 
Foraminifera, with sponge-spicules, sand-grains, and other debris. 
The structure of the body- wall of this form (Station 141) corresponds in general with 
the European type, but the muscular fasciculi are less regular. The nerve-cords, with the 
large superior neural canal, are embraced by the ventral longitudinal muscles in the same 
manner. A comparatively narrow pedicle connects the area with the hypoderm inferiorly. 
The dental apparatus of this species somewhat approaches the Lumhriconereis 
{Notocirrus) tetraurus of Schmarda,^ from the Cape and Chili, but the presence of a 
considerable dorsal cirrus on the foot, and the structure of the posterior hooks, are essential 
points of difference. G-rube’s Lwnbriconereis cavifrons,^ from the same region (Lime Bay, 
Cape of Good Hope), is easily distinguished by the presence of seven teeth in the great 
dental plates and the almost globular excavated head ; while his Lumhriconereis ca'pensis ® 
has from five to seven teeth in the great dental plates, the foot is abbreviated and the 
lamella short and bluntly rounded. He does not describe the head, so that the details 
are incomplete. 
Lumhriconereis hifurcata, n. sp. (PI. XXXVI. figs. 10, 11, 12; PL XVHa. fig. 16). 
LLahitat. — Dredged at Station 232 (off the southern shores of Japan), May 12 , 1875 ; 
lat. 35° 11' N., long. 139° 28' E. ; depth, 345 fathoms; temperature of the bottom 41°J, 
surface temperature 64°'2 ; sea-bottom, green mud. 
The single fragmentary example measured about 145 mm. in length and about 
5 mm. in breadth. 
The head (PI. XXXVI. figs. 10, 11) in the preparation forms a somewhat acute 
cone, marked dorsally by a few longitudinal streaks. Ventrally the mouth and other 
1 Op. cit., I. ii. p. 117. ^ Aiinel. Novara-ExpecL, Zool. Theil., p. 13, Taf. i. fig. 5. 
^ Jahres-Bericlit. der Schles. Gesellsch. f. vat. Cultur., 1878, p. 95. 
(zOOIi. CHALL. EXP. — PART XXXIV. 1885.) 
LI 31 
