92 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 25 



the dorsum the transverse, ciliated rows are present and conspicuous 

 from the first branchial segment. Interramal or intersegmental pouches 

 have not been observed. The body terminates posteriorly in a pair of 

 thicker, longer ventral cirri and a similar, though slenderer and shorter 

 pair of dorsal cirri, directed obliquely back. 



Branchiae are present from the second segment to the end of the 

 body ; they are long, slender, straplike and completely free from the 

 postsetal lamella (PI. 12, fig. 3). 



Anterior parapodia are provided with long, slender, pointed setae in 

 both notopodia and neuropodia. One or two longer, thicker setae are 

 usually present at the inferiormost position of the neuropodial fascicle. 

 Hooded hooks are present in neuropodia from the eleventh, and continue 

 posteriorly to the end. A postmedian segment has a notopodium with a 

 long, dorsally directed branchia, an auricular postsetal lamella, and 

 about 12 to 16 slender, distally pointed setae. The corresponding neuro- 

 podium has a shorter but deeper postsetal lamella and 3 kinds of setae; 

 the 2 ventralmost are longest, directed ventrally. The others form a 

 transverse series of 9-12 hooded hooks alternating with an equal number 

 of longer, slenderer, pointed setae. 



Seen individually, the hooded hooks have a rounded hood, and the 

 main fang is at right angles to the shaft; it is surmounted by 2 small 

 teeth in tandem (PI. 12, fig. 4). The posterior end terminates in 4 

 cirri (PI. 12, fig. 2). 



Nerinides maculata differs from other species of the genus in the 

 character of its prostomium and adjacent parts; the prostomium is 

 broadly rounded in front, and the maculated spots are at the base of 

 the palpi and posterior end of the peristomium. In a nearly related 

 species, also from southern California (see N. pigmentata, below), the 

 maculation is on the prostomium. 



N. maculata may be considered a southern species, having its distribu- 

 tion limited largely to the southernmost parts of California and western 

 Mexico. The collection from Redondo canyon, southern California (Sta. 

 6817) carne from 40 fm, in sediments of gray sand; it was associated 

 with an unusual number of a mytilid clam, Amygdalum pallidulum 

 (Dall) ( 100 + individuals) , together with 28 other species of polychaetes. 



Nerinides pigmentata (Reish) 1959, new combination 



Spiophanes pigmentata Reish, 1959, pp. 11-13. 



Collection. VELERO IV Sta. 5869, and others, from southern 

 California. 



