300 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [594] 
NEMATONEREIS, species undetermined. (p. 508.) 
A species, apparently belonging to this genus, was dredged in 29 
fathoms, east of Block Island. The specimens have been lost or mis- 
laid. In life the head was small, rounded, with one median dorsal 
antenna, about as long as the diameter of the head. Eyes two, small 
but conspicuous, dark brown. Dorsal cirri slender. 
LUMBRICONEREIS FRAGILIS Cirsted. (p. 507.) 
Conspec. Ann. Dan., p. 15, figs. 1, 2, 1843 (t. Malmgren). Lumbricus fragilis 
Miiller, Prod. Zool. Dan., p. 216; Zool. Dan., vol. i, p. 22, Pl. 22, figs. 1-3, 1788, 
(t. Malmgren). Lumbrinereis fragilis Malmgren, Annulata polycheta, p. 63, 
Pl. 14, figs. 83-83, D. 
Mouth of Vineyard Sound and deeper waters outside; northward to 
Nova Scotia and Gulf of Saint Lawrence. Northern coasts of Europe. 
From low-water mark, in the Bay of Fundy, to 430 fathoms, off Saiut 
George’s Bank. 
LUMBEICONEREIS OPALINA Verrill, sp.nov. Plate XIII, figs. 69,70. (p. 
342.) 
Lumbriconereis splendida Leidy., op. cit., p. 15 (non Blainville). 
Body cylindrical, much elongated, largest in the middle, tapering 
gradually toward. the head, which is comparatively small; segments 
well marked. Head conoidal, obtuse, changing much in form during 
life; in extension considerably longer than broad, and more acute than 
in the figure. Eyes four, in a transverse row, the two middle ones 
larger and a little in advance of the others. The lateral appendages, or 
“feet,” consist of a short, obtusely-rounded basal papilla, which bears 
the sete; from the posterior and ventral end of this a prominent elon- 
gated lobe arises, which is somewhot curved and obtuse. These appen- 
dages are Jonger in the middle of the body than anteriorly. Sete five to 
nine in each fascicle, and of several forms; one or two in each fascicle 
usually have a long, slender, flexible capillary point. Color reddish or 
brownish, with brilliant iridescence. 
Length up to 400"; diameter in middle, 3™™. 
New Haven to Vineyard Sound ; low-water mark to 14 fathoms. 
LUMBRICONEREIS TENUIS Verrill, sp. nov. (p. 342.) 
Body very long, slender, filiform, of nearly uniform diameter through- 
out, capable of great extension; segments very numerous, well marked. 
Head a little narrower than buccal segment, depressed, obtusely puinted 
or rounded in front, without eyes. In the first to ninth pairs the late- 
ral appendages have about six slender lanceolate setz; those of the ninth 
pair have two slender spatulate sete, with about six or seven lanceolate 
ones; at the sixteenth pair they begin to have recurved spatulate sete, 
with two or three hook-like denticles at the end, while two or three 
lanceolate ones remain; posterior to the twenty-third or twenty-fourth 
pair only one of the long, slender, acute sete remains, accompanied by 
