EEPORT ON THE ANNELIDA. 
169 
somewhat acute point, in this form there is a broad ovato-lanceolate process which 
diminishes very slightly till near the tip. The ventral lamella is much more rounded at 
the extremity than in Eulalia viridis, so that its outline forms the greater part of an 
ovoid. The shape is nearly the same at the thirtieth foot (PI. XXXII. fig. 10). At the 
fortieth and fiftieth feet the dorsal lamella is less broadly lanceolate than at the tenth, 
but it never assumes the acutely lanceolate outline of that in Eulalia viridis. The 
ventral lamella is as distinctly differentiated as in front. From the sixtieth to the 
ninetieth foot the superior lamella becomes more triangular, from an increase in breadth 
at the base. The inferior, on the other hand, diminishes in depth (vertical diameter). 
A slight elongation of the dorsal lobe is again noticed toward the one hundred and tenth 
foot and the tail, as far as the latter is present. The setigerous lobe of the foot is for 
the most part in indifferent preservation, so that its outline is ambiguous. The bristles 
(PL XIVa. figs. 16, 17, from the anterior third of the body) seem to have tips of about 
the same proportional length as in Eulalia viridis, and the differences in the curves of 
the end of the shaft are slight. The shafts, however, are decidedly shorter than in 
Etdalia viridis, and their distal ends more obtuse. 
Genetyllis, Malmgren. 
Genetyllis (?) oculata, n. sp. (PL XXVIII. fig. 1 ; PI. XVa. figs. 2, 3 ; PL XXXIIIa. 
figs. 1-8). 
Habitat. — Dredged at Station 214 (in the Celebes Sea, south of Mindanao), February 
10, 1875; lat. 4° 33' N., long. 127° 6' E.; depth, 500 fathoms; bottom temperature, 
41°'8 ; sea-bottom, blue mud. 
The specimen (which has been slightly dried) measures about 20 mm. in length and 
4 '5 mm. in breadth at its widest portion. 
At first sight the form of the body and the remarkable development of the eyes cause 
it to resemble an Alciope, especially as only a single loose dorsal lamella exists. The 
dorsum is brownish throughout, the pigment here and there being removed by attrition 
of the cuticle. Yentrally the colour is pale brown or dull yellowish. The body is some- 
what spindle-shaped, tapering more decidedly from the middle toward the head, than 
posteriorly toward the tail. 
The head is small, the greater part of its area being occupied by the two very large 
eyes, which leave only a small median triangular space in front and another posteriorly. 
Each eye has a belt of deep brown pigment, best marked dorsally, all round the large 
transparent cornea, which looks outward and downward as well as forward. Just in front 
(ZOOL. CHALL. EXP. — PART XXXIV. 1885.) LI 22 
