248 
THE VOYAGE OF H.M.S. CHALLENGER. 
teeth, and that the somewhat ovoid head was longer than broad. Moreover, the third 
pair of dental plates have only a single tooth. In all probability the present corresponds 
with Grube’s species. 
Lumbriconereis neo-zealanice, n. sp. (PI. XXXVI. figs. 18, 19; PI. XVIIIa. figs. 5-9). 
Habitat. — Trawled at Station 169 (north-west point of New Zealand), July 10, 1874; 
lat. 37° 34' S., long. 179° 22' E.; depth, 700 fathoms; bottom temperature 40°'0, surface 
temperature 58°'2 ; sea-bottom, blue mud. 
A somewhat small species, the longest specimen measuring about 60 mm., and 
anteriorly having a breadth of about 2 mm. The shape of the body agrees with that 
usually seen in the genus, and the segments are very distinctly marked. 
The head (PL XXXVI. fig. 18) is rather elongated and pointed, with one or two 
longitudinal depressions dorsally, which, however, are omitted in the figure, and an evident 
Fig. 15. 
Fig. 14. — Maxill® (broken) and dental plates of Lumbriconereis neo-zealanice ; enlarged. 
Fig. 15. — Mandibles of Lmrihriconereis neo-zealanice ; enlarged. 
median groove ventrally. Both dorsal and ventral surfaces present a deposit of brownish 
pigment. The crenatures of the lips are s imil ar to those in Lumbriconereis fragilis. 
The dental apparatus, in variety A, is blackish-brown. The maxillae (Fig. 14) are 
moderately curved, and a constriction exists at the base posteriorly in front of the 
wedge-shaped appendages. Each great dental plate has five teeth. The first lateral 
plate is elongated and somewhat triangular, with a single tooth; the next is petaloid, 
with a tooth on the inner margin, and two minute denticles further out. A small horny 
