226 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



PLATE 13 



Figures 275-277, Lumbrineris pallida (coll. 1205-40) : Fig. 275, com- 

 posite hooded hook from about tenth parapodium; Fig. 276, sim- 

 ple limbate seta from same parapodium; Fig. 277, simple hooded 

 hook from seventeenth parapodium (figs. 275-277 to same mag- 

 nification). 



Figures 278-284, Lumbrineris januarii (coll. A 38-39): Fig. 278, 

 anterior end, including first setiger, in dorsal view, enlarged; 

 Fig. 279, maxillae in dorsal view; Fig. 280, mandibles in ventral 

 view from same individual, to same magnification; Fig. 281, 

 twelfth parapodium in anterior view, setae and hooks indicated ; 

 Fig. 282, posterior parapodium in anterior view, hooks indicated 

 (figs. 281, 282 to same magnification) ; Fig. 283, simple hooded 

 hook from a median parapodium; Fig. 284, composite spiniger 

 from twelfth parapodium (figs. 283, 284 to same magnification). 



Figures 285-290, Notoctrrus californiensis (coll. 1205-40) : Fig. 285, 

 mandibles; Fig. 286, maxillae in dorsal view, the median un- 

 paired piece pushed to one side, from same individual, to same 

 magnification ; Fig. 287, anterior end in dorsal view, enlarged ; 

 Fig. 288, distal end of dentate seta from a median parapodium; 

 Fig. 289, a median parapodium, with setae and projecting 

 acicula indicated; Fig. 290, smooth limbate seta turned so as to 

 show bilimbate condition (same magnification as for fig. 288). 



Figures 291-296, Labidognathus forcipes (coll. 1251-41): Fig. 291, 

 maxillae in dorsal view, the unpaired carrier pushed to one 

 side; Fig. 292, one of 3 limbate setae from a sixth parapodium; 

 Fig. 293, forceps and carriers seen from left side, showing great 

 thickness of forceps at base and method of attachment of un- 

 paired carrier; Fig. 294, anterior end in right lateral view; Fig. 

 295, an anterior parapodium in anterior view, setae indicated; 

 Fig. 296, a posterior parapodium in anterior view (figs. 291, 

 293, 295, 296 to same magnification). 



Figures 297-302, Drilonereis nuda (Mission Bay): Fig. 297, anteri- 

 or parapodium, position of setae and aciculum indicated ; Fig. 

 298, a posterior parapodium in anterior view, setae and acicu- 

 lum indicated; Fig. 299, maxillae in dorsal view, the unpaired 

 carrier pushed to the side (figs. 297-299 to same magnification) ; 

 Fig. 300, distal end of aciculum, from a posterior parapodium; 

 Fig. 301, distal end of aciculum, from an anterior parapodium, 

 same individual (figs. 300, 301 to same magnification) ; Fig. 

 302, outline of prostomial lobe, enlarged. 



