90 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 22 



Family SYLLIDAE 



Representatives of this family are seldom taken in samples from 

 basin depths. Only a few small, perhaps immature, specimens were 

 recovered, as indicated below. 



Genus LANGERHANSIA Czerniavsky, 1881 



Langerhansia heterochaeta (Moore) 1909 



Syl/is (Ehlersia) heterochaeta Moore, 1909, pp. 322-325, pi. 15, figs. 



1-4. 

 Syllis heterochaeta Moore, 1923, p. 256. 



S. (Ehlersia) heterochaeta Berkeley and Berkeley, 1952, p. 76. 

 Ehlersia heterochaeta Hartman and Barnard, 1958, pp. 21, 55. 



This species was recorded from San Nicolas Basin (Moore, 1923). 

 It occurs more frequently in seabottoms above sill depths. 



Genus Exogone Oersted, 1845 



Exogone lourei Berkeley and Berkeley, 1938 

 Berkeley and Berkeley, 1938, pp. 44-47, figs. 11, 12. 



A specimen was taken in Tanner Basin. The species is characterized 

 by having composite spinigers with a long appendage in anterior seg- 

 ments. It is more extensively known in western Canada and western 

 Mexico (Berkeley and Berkeley, 1948, p. 79). 



Exogone sp. 



A small individual comes from Santa Barbara Basin, in 280 fms. It 

 lacks long spinigerous setae in anterior segments. 



Genus SYLLIS Savigny, 1818 



Syllis sp. 



A small specimen less than 10 mm long, with prolonged palpi, was 

 taken in Santa Catalina Basin in 630 fms. 



Family NEREIDAE 



Five species in 3 genera are represented ; they may be identified 

 according to the following key. 



