82 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 22 



and difficult to tear. The species has been recovered only as a fragment 

 from Santa Catalina Basin. It has a more extensive distribution and 

 greater concentration on shelf and slope depths of southern California. 



Genus LEANIRA Kinberg, 1855 



Leanira alba Moore, 1910 

 Moore, 1910, pp. 387-391, pi. 33, figs. 99-104. 



A large individual 70 mm long by 5.5 mm wide comes from the 

 San Diego trough. The prostomium lacks eyes and the body is colorless 

 or white. Elytra are plain and smooth; they lack a fringe. Parapodia 

 are characterized by the modifications of long thick fringe extending 

 dorsally over the notopodia. 



This species has been known only through its original discovery of 

 one specimen, off Point Loma, in about 650 fms. This second record 

 is near the type locality and from comparable depth ; it was taken in 

 silty muds. 



Leanira calcis, new species 

 (Plate 4, figs. 1-5) 



A large individual was taken in San Nicolas Basin (Sta. 6340) ; it 

 measures 70 mm long for 44 segments and 8 mm across the body with 

 parapodia, but it lacks tail and all elytra. The segments are widely 

 separated from one another and parapodial lobes are sufficiently unique 

 to distinguish this species from other nearly related ones. 



Parapodial branchiae are emergent from the outer lateral base of 

 the elytral scar ; they have a spurlike process on the upper side ( Plate 4, 

 fig. 1 ) to which the specific name refers. Three fimbriated cuplike organs 

 separate the branchia from the upper end of the notopodium. Another 

 fimbriated organ is found on a projecting process located at the lower 

 proximal end of the neuropodium; it resembles an accessory ventral 

 cirrus but is nearer the body and has an auricular projection at its outer 

 base ( Plate 4, fig. 1 ) . 



The notopodium is located directly over the neuropodium but is 

 much slenderer ( Plate 4, fig. 1 ) ; it is prolonged beyond the acicular tip 

 as a slender, digitate lobe. Three slender filaments emerge at its subdistal 

 edge. Notopodial setae are simple and slender; they form full tufted 

 fascicles ; seen individually, they are nearly smooth along their free length 

 or more or less delicately transversely spinose. 



Neuropodia are much larger than notopodia and have a transverse 



