118 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 92 
an anterior region, hence different from the other species. It is 
difficult to make close comparison of these species with long setae 
because of the lack of information on several important points. 
LI. moorei is known only from off Catalina Island, in 1,350-2,182 
fathoms, in gray mud and fine sand. 
LUMBRINERIS PARVA-PEDATA (Treadwell) 
Ficure 10, i, j, m 
Lumbriconereis parva-pedata TREADWELL, 1902, p. 198 (U.S.N.M. No. 16019; 
Ensenada Honda, Culebra). 
Lumbrinereis elongata TREADWELL, 1931, p. 3 (U.S.N.M. No. 19622; Louisiana). 
This species resembles a Drilonereis because of its long, slender, 
cylindrical form, and its proportionately tiny anterior parapodia. 
The proboscideal apparatus was not originally described. The max- 
illary carriers are comparatively massive, nearly as long as the for- 
ceps, broad at their place of attachment to the forceps, laterally 
constricted, and terminate distally in long, slender tips. The forceps 
taper to simple, falcate tips. Maxilla II has six teeth on each side, 
the distalmost tooth being shorter and somewhat recurved over the 
edge of the maxillary plate so that it is apt to be overlooked unless 
the plate is slightly turned; maxilla III has two blunt teeth on each 
side; maxilla IV has a single point on each side. Mandibles are 
white, calcareous, but now considerably eroded and soft; the two 
parts are long, nearly equaling the length of the entire maxillary 
apparatus; the base is incised for a short distance; the distal end is 
broad but not flaring. 
No composite setae could be distinguished, but setae in the first 
few segments have been broken off flush with the body wall. In the 
original description simple hooks are shown in the second para- 
podium, accompanied by limbate setae. Anterior parapodia resem- 
ble those more posteriorly except that the latter are stouter. There is 
a triangular postsetal lobe (fig. 10, 7). Hooded hooks (fig. 10, m) 
are distally finely denticulate. 
This type has been compared with that of Z. elongata Treadwell 
(1981, p. 3) from Louisiana, and the two are believed to be identical. 
Both are long, slender, greatly attenuate, with tiny parapodia in ante- 
rior segments, with simple hooded hooks present in anterior segments 
(fig. 10, 2) already from the first. The proboscideal apparatus of 
L. elongata (now missing) was described as follows: “The forceps 
have a prominent carrier and a slender terminal portion. The left 
paired plate has a slender terminal tooth followed by three much 
heavier ones, and a basal hump that may be the remnant of a tooth 
[total 4]. The second paired plate [maxilla III] has two teeth, 
the terminal plate [maxilla IV] only one. The jaw was badly broken 
in removing and only the left side is intact, but so far as could be 
