120 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 92 
The prostomial lobe is bluntly conical in one individual (about as 
long as broad), but considerably longer in another (fig. 11,4). Max- 
illary carriers are longer than wide and terminate basally in slender 
tips, more than shown (Treadwell, 1921, fig. 384) ; there is a lateral 
constriction on the proximal half. Forceps are falcate; maxilla IT 
-has four teeth on each side; maxilla III has two teeth on a side; 
maxilla IV has a long, slender, pointed piece on each side. 
Parapodia from the first setiger have both limbate setae and sim- 
ple hooded hooks, the postsetal Icbe already long, triangular; a second 
parapodium is shown in figure 14, d. Posterior parapodia have slen- 
der, longer, postsetal lobes and are provided with only hooded hooks 
(fig. 14, e). 
The specific name is preoccupied by M. Edwards (in Cuvier’s 
Régne Animal) and by Quatrefages (1865, p. 365), but since both 
of these are believed to be Arabella species (Fauvel, 1923, p. 438), a 
new name is not applied. 
L. maculata Treadwell is known only from Puerto Rico and Florida 
(Treadwell, 1921, p. 103). 
LUMBRINERIS BILABIATA (Treadwell) 
Lumbriconereis bilabiata TREADWELL, 1902, p. 199 (U.S.N.M. No. 16015; Maya- 
guez Harbor, Puerto Rico). 
The only collection is a small fragment, 12.5 mm. long, with 59 
setigers, caudally incomplete, all setae too badly damaged to identify. 
The prostomial lobe is depressed conical, longer than broad, without 
sulcus. Already in anterior segments the postsetal lobe is slender, 
digitiform, standing at an angle, directed more or less posteriorly, 
away from its base. | 
In the original description the proboscideal formula was not given.. 
The forceps are falcate; maxilla II has five teeth on each side; 
maxillae III and IV have one tooth each. 
LUMBRINERIS ERECTA (Moore) 
Ficure 11, e-g 
Lumbriconereis erecta Moore, 1904, p. 491 (San Diego, Calif.). 
The types of this species are not deposited in the National collec- 
tions; cotypes are contained in the Academy of Natural Sciences of 
Philadelphia (No. 2585). Threugh the kindness of Prof. J. Percy 
Moore, I was permitted to see them. There are three large, robust 
specimens, agreeing closely with many specimens collected by the 
author in the intertidal zones of southern California. The pro- 
stomium has a longitudinal groove ventrally, as originally stated, 
but this is weak in one individual. Figure 11, e-g, shows a tenth, 
a median and a posterior parapodium. Simple hooded hooks are 
present from the thirty-seventh segment, continued to the end. 
