NO. 2 HARTMAN, BARNARD: BENTHIC FAUNA OF DEEP BASINS 147 



Praxillella sp. 



Another species taken in San Nicolas Basin (Sta. 6341) with the 

 preceding, and in Santa Catalina Basin, differs from P. trifila in that the 

 cephalic plaque lacks a flange and a postmedian incision. The posterior 

 4 or more segments are bell-shaped, broadest at their posterior ends. 

 There is a single preanal, asetigerous segment, preceded by a shorter 

 though similar segment which has setae but no uncini. The pygidium is 

 a tapering cone with a long midventral but no lateral cirri. 



Genus EUCLYMENE Verrill, 1900 



Euclymene delineata Moore, 1923 

 Moore, 1923, pp. 231-233, pi. 18, figs. 39, 40. 



Specimens come from 2 stations in San Pedro Basin. Length is 25 

 to 35 mm. There are no segmental collars. The first 3 setigerous segments 

 have single thick, nearly acicular neuropodial spines ; these are replaced 

 by rostrate hooks farther back. The prostomial nuchal organs are straight, 

 parallel grooves. The anal funnel is surrounded by 18 slender filaments 

 alternating long and short, and a longest midventral one. 



This is known only off Santa Rosa Island in 243-265 fms (type) 

 and from San Pedro Basin. It may be a deep water form. 



Another larger species of the same genus is E. reticulata Moore 

 (1923, pp. 230-231, pi. 19, figs. 37, 38), also from considerable depths. 

 It is distinguished from E. delineata by its greater size (length 52 mm) ; 

 anterior neuropodial spines are distally crooked. Its geographic range 

 overlaps that of E. delineata. 



Genus RHODINE Malmgren, 1865 

 Rhodine bitorquata Moore, 1923 



Moore, 1923, pp. 223-225, pi. 18, fig. 30. 



Berkeley and Berkeley, 1952, pp. 52-53, figs. 107, 108. 



Fragments of collared segments are frequent in samples from most 

 basins; they include San Pedro, Santa Cruz, San Nicolas, Tanner, West 

 Cortes, San Clemente, East Cortes Basins, and the San Diego trough. 

 This species attains its greatest development in shallower bottoms of 

 southern California, in depths of 100 fms or less. The original account 



