NO. 1 HARTMAN : POLYCHAETOUS ANNELIDS 67 



transposed prostomial antenna. Its setae are numerous, long, capillary, 

 finely serrated. 



In the second to fourth segments, the neuropodium has a few antero- 

 dorsal, composite setae, their appendages long, 1 or 2 articulated, and 

 distally bifid, the shaft is long, strongly spinose (pi. 16, fig. 192). The 

 median and inferior neuropodial setae are less spinose or quite smooth. 

 From the fifth segment the spinose composite setae are replaced by 

 simple, spinose setae (pi. 16, fig. 193), and the median (pi. 16, fig. 

 197) and inferior setae (pi. 16, fig. 196) are all smooth shafted, the 

 former heavier than the latter. The appendages are 1 to 6 articled, 

 and the tips are finely bifid (pi. 16, figs. 199, 200). From about the 

 thirty-second segment, one or a few of the median composite neuro- 

 podial setae are stout, the appendage short, falcate, strongly bifid (pi. 

 16, fig. 201). Setae and acicula are pale yellow. 



A few terminal parapodial fringes are present on the anteriormost 

 segments, but inconspicuous or absent on others, save for a few at the 

 anterior margin at the distal end of the notopodium. The ventral cirrus 

 of the first segment is longer than those following. It extends distally 

 beyond the parapodium. By the fourth segment it is shorter than its 

 respective parapodium, and remains more or less the same more pos- 

 teriorly. 



Sthenelats hancocki approaches S. neoleanirae (see below) in having 

 mostly fine neuropodial setae, with a strongly tapering appendage and 

 minute, bifid tip. It diflFers, however, in almost lacking the parapodial 

 fimbriation which is notable in S. neoleanirae. Also, the neuropodial 

 setae, though tapering strongly distally, terminate in a more distinct 

 bifid tip. The elytral spines are proportionately much smaller and 

 lower. 



Holotype. — ^AHF no. 11. 



Distribution. — Monterey Bay, ofT Point Pifios, California. In 36 

 fms. 



Sthenelais neoleanirae, new species 

 Plate 17, Figs. 203-216 



Collection. — 667-37. One specimen. 



This is known only through a single, incomplete anterior fragment, 

 including the prostomium and about 73 segments with 57 pairs of elytra. 



