230 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



PLATE 15 



Figures 315-324, Nothria stigmatis intermedia: Fig. 315, second 

 parapodium in posterior view, showing 2 acicula, a superior 

 limbate seta, and 4 tridentate hooded hooks; Fig. 316, maxillary 

 carriers, to same magnification; Fig. 317, composite spiniger 

 from fourth parapodium; Fig. 318, a simple hooded hook from 

 same parapodium, to same magnification; Fig. 319, subacicular 

 hook from fourteenth parapodium; Fig. 320, distal end of acicu- 

 lum from same parapodium; Fig. 321, fourth parapodium, 

 showing distribution of setae, hooks, and acicula, to same mag- 

 nification as fig. 315; Fig. 322, distal end of aciculum from 

 eighth parapodium; Fig. 323, fascicle of 4 hooded hooks from 

 second parapodium; Fig. 324, a superior limbate seta from eighth 

 parapodium (figs. 322-324 to same magnification). 



Figures 325-330, Ophryotrocha puerilis: Fig. 325, anterior end in- 

 cluding first setiger, in dorsal view, with ciliary rings indicated; 

 Fig. 326, maxillary plates from one side, excluding forceps, one 

 of lower teeth concealed from view; Fig. 327, mandibles and 

 maxillary forceps with carriers; Fig. 328, distal end of mandi- 

 ble; Fig. 329, composite seta; Fig. 330, simple limbate seta (figs. 

 326, 328-330 to same magnification). 



