54 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 25 



occurred abundantly, had sediments of olive green sandy silt, with the 

 most commonly occurring polychaetes including Chloeia pinnata Moore, 

 Haploscoloplos elongatus Johnson and Axiothella rubrocincta (Johnson). 



Genus Sthenelanella Moore, 1910 

 Type S. uniformis Moore, 1910 



This genus was erected for a single species from California. Another 

 species was later referred to it,but it is considered probable that the two 

 names refer to a single widely distributed species (see below). 



Sthenelanella uniformis Moore, 1910 



Moore, 1910, pp. 391-395, pi. 33, figs. 105-112. 

 Hartman, 1939, pp. 69-70, pi. 18, figs. 226-231. 

 fS. atypica Berkeley and Berkeley, 1941, pp. 26-27, figs. 1-3. 



Collections. This species is very commonly taken in grab samples 

 from shelf and slope depths of southern California, especially from silts, 

 mixed bottoms, and in ophiuriod associations. Specimens are encased in 

 long, branched mucoid tubes which are removed from the animal with 

 difficulty, and may measure 5 times as long as the specimen; the 

 branches consist of lateral extensions of the main shaft of somewhat 

 smaller diameter. Larger tubes are 10 to 15 cm long and 5 to 7 mm 

 across. 



S. atypica Berkeley and Berkeley (1941, p. 26), from Balboa and 

 Newport Bays, southern California, was distinguished from S. uniformis 

 by having Sthenelais-like setae in the anteriormost segments; but since 

 S. uniformis also has such setae, the distinctions cannot be specific. The 

 setae of the first few segments are small and easily overlooked ; the more 

 typical, short appendaged setae of most segments are more characteristic. 



S. uniformis is very common in shelf and slope depths of southern 

 California, and has been reported also from western Mexico and 

 Ecuador. 



Family Pareulepidae 



Genus Pareulepis Darboux, 1899 

 Pareulepis fimbriata (Treadwell) 1901 



Hartman, 1939, pp. 79-80, pi. 23, figs. 280-288. 



Small specimens, measuring 2 to 4 mm long, have been taken off 

 southern California in shallow, less than 16 meter, depths, in dark green 



