204 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



PLATE 2 



Figures 24-36, Diopatra ohliqua: Fig. 24, pectinate seta from an an- 

 teromedian parapodium (coll. 770-38) ; Fig. 25, tip of largest of 

 4 acicula from same parapodium; Fig. 26, distal end of bidentate 

 hook from second parapodium, from same individual; Fig. 27, 

 anterior end in ventral view, from same collection ; Fig. 28, 

 second parapodium in anterior view, setae omitted, showing 

 bifid presetal lobe (coll. 369-35) ; Fig. 29, subacicular hook from 

 an anteromedian parapodium (coll. 770-38) ; Fig. 30, an occa- 

 sional upper subacicular hook from a far posterior parapodium; 

 Fig. 31, tip of a pointed limbate seta, showing toothed edge, 

 from an anteromedian parapodium (coll. 369-35) ; Fig. 32, max- 

 illae, with carriers, forceps and maxillae II, in dorsal view 

 (coll. 770-38) ; Fig. 33, mandibles, from same specimen, to same 

 magnification ; Fig. 34, fascicle of 4 acicula, showing acutely 

 pointed tips; Fig. 35, one of 8 to 10 pectinate setae from a far 

 posterior parapodium (coll. 820-38) ; Fig. 36, one of 2 subacicu- 

 lar hooks from a far posterior parapodium. 



Figures 37-43, Diopatra tridentata: Fig. 37, pectinate seta; Fig. 38, 

 second parapodium, in anterior view (coll. 948-39) ; Fig. 39, 

 carriers and base of forceps (coll. 1126-40) ; Fig. 40, mandibles 

 from same individual; Fig. 41, portions of 2 tubes, showing an- 

 nulations; Fig. 42, tridentate hook from second parapodium 

 (coll. 1126-40) ; Fig. 43, bidentate subacicular hook from same 

 specimen. 



Figures 44-48, Diopatra neotridens: Fig. 44, mandibles in ventral 

 view; Fig. 45, maxillary parts from same individual, to same 

 magnification; Fig. 46, base of an inner lateral tentacle show- 

 ing ceratophore and portion of style with pigment stripes ; Fig. 

 47, second parapodium in anterior view, setae omitted ; Fig. 48, 

 portion of a larger branchia showing branchial stem, dorsal 

 cirrus, and 5 of 12 whorls of filaments, enlarged. 



