230 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 7 



gion, have opaque areas on the lobes and dorsal and ventral bases. Setae 

 are pale yellow, acicula black. 



The prostomium is broad, depressed, about as wide as long, the 4 eyes 

 large, wide apart, lenticulated (pi. 38, fig. 76). The prostomial antennae 

 exceed the palpi in length. The latter are directed ventrally. Peristomial 

 cirri are long, slender, smooth, the longest extending distally to about the 

 eleventh parapodium. 



The proboscis lacks paragnaths on areas I, II, and V; area III has 7 

 or 8, more or less separated, small patches of pectinae; area IV has a 

 crescentic area of pectinae in 3 or 4 rows; area VI has a short row of 

 pectinae, and sometimes also a much shorter row on the maxillary side; 

 areas VII and VIII have a single transverse series of 5 patches, the 3 

 ventralmost the longer, the 2 lateral areas short. All paragnaths save 

 those on area IV are weakly developed. Jaws are thin, pale, amber colored 

 except for brown tips ; they have 5 teeth on the cutting edge. 



Parapodia are well developed throughout, the free lobes increasing in 

 length from anterior to posterior regions. The acicular lobes are distally 

 acute (pi. 38, figs. 77-80). Dorsal, middle, and ventral lobes are elongate, 

 the dorsal lobe extending distally beyond the others. Dorsal cirri are long- 

 est in anterior segments; they extend distally far beyond the setal tips. 

 More posteriorly they are shorter, but in atokous individuals they extend 

 beyond the setae. 



Setae include those typical of the genus. Homogomph falcigerous no- 

 topodial setae (pi. 38, figs. 81-83) are present from about the fourteenth 

 segment. The appendage is terminally smooth except for a minute boss. 

 Throughout, they are accompanied by spinigerous setae, but the latter de- 

 crease in number posteriorly. Neuropodia are provided with spinigerous 

 and falcigerous setae. The appendage of the latter is short, recurved (pi. 

 38, fig. 82), the lateral spinelets fine, hairlike. 



Included in the dredged collections from Cape San Lucas (495-36) 

 are several approaching epitoke (nereilepas stage). A male consists of 

 about 90 segments, is 20 mm long, and has the first 7 parapodia modified. 

 After the thirteenth segment, the epitokal lappets are gradually devel- 

 oped, but there is no abrupt transformation of the parapodia. A typical 

 parapodium in this area is shown in plate 38, figure 79. Similarly, a female 

 from the same collection consists of 85 segments, is 23 mm long, resem- 

 bles the male, but the dorsal cirri are smooth (pi. 38, fig. 77). 



Numerous pelagic epitokous individuals from Ecuador have been 

 identified with this species, as redescribed by Monro and Fauvel (see sy- 



