158 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



tomial lobe is comparatively somewhat longer. The specific significance 

 of these differences, however, may be questioned, because the observable 

 variability in a species in a single population is sometimes greater. With- 

 out collections from the western Pacific it is not possible to make com- 

 parison or to substantiate a possible synonymy. Mcintosh's name is the 

 older. 



L. bifilaris Moore (1911, pp. 291-294, figs. 135-142) from southern 

 California differs from that of Ehlers (1901) in having black, not yel- 

 low, acicula; also the proboscidial armature and the distribution of hood- 

 ed hooks in anterior segments of the body are as in L. bicirrata as herein 

 interpreted. L. bifilaris Chamberlin (1919, pp. 327-328, pi. 60, figs. 6-9, 

 pi. 61, fig. 1) from off western Mexico is also believed to belong here, 

 since it too has black acicula, maxillae and mandibles have the same pro- 

 portions, and parapodial parts are seemingly the same. 



Distribution. — Puget Sound, Washington ; central and southern Cali- 

 fornia, south to western Mexico. Subintertidal to 200 fms. 



Lumbrineris latreilli Audouin and Edwards 

 Plate 9, Figs. 213-216 



Crossland, 1924, pp. 10-15, figs. 8-14; Fauvel, 1923, pp. 431-432, fig. 

 171; Monro, 1933, pp. 84-85. 



Collections.— \69-3A (1); 211-34 (1); 257-34 (1); 259-34 (1); 

 374-35 ( 1 ) ; 445-35 ( 1 ) ; 533-36 ( 1 ) ; 563-36 ( 1 ) ; 745-37 ( 1 ) ; 747-37 

 (1); 814-38 (1); 893-38 (1); 909-38 (1); 913-39 (1); 975-39 (2) 

 981-39 (25); 985-39 (1); 990-39 (11); 1018-39 (1); 1026-39 (1) 

 1075-40 (8); 1078-40 (2); 1093-40 (1); 1121-40 (1); 1125-40 (5) 

 1126-40 (2); 1130-40 (1); 1133-40 (1); 1146-40 (1); 1160-40 (1) 

 1173-40 (1); 1191-40 (2); 1192-40 (1); 1193-40 (1); 1194-40 (1) 

 1205-40 (1); 1220-40 (5); 1232-41 (2); 1236-41 (1); 1240-41 (1) 

 1264-41 (1); 1271-41 (1); 1289-41 (10); 1321-41 (3) ; 1325-41 (1) 

 1334-41 (2); 1355-41 (1); 1356-41 (1); 1359-41 (1); Moss Beach, 

 San Mateo County, south to Point Loma, California, shore to 42 fms 

 (many) ; A 4-39 (1) ; A 13-39 (3) ; A 14-39 (1) ; ?A 15-39 (2 an- 

 terior ends) ; A 52-39 (1). 



The prostomium is depressed conical, usually a little longer than 

 broad. Composite hooded hooks (pi. 9, fig. 216) are present through the 

 first 18 to 23 parapodia; a fourth parapodium is provided with about 5 

 such hooks accompanied by 5 limbate setae and 3 yellow acicula. The 

 parapodial lobes are not distinctive ; the postsetal lobe is longer than the 

 presetal one as usual in the genus ; in anterior segments it is about as in 



