110 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



sometimes pale. Number of segments is about 165. The prostomial an- 

 tennae are somewhat, though irregularly, ringed, the median with 7 or 

 more articles. Peristomial cirri are nearly smooth, about as long as, or 

 shorter than, the peristomium. Branchiae are present from the sixth seti- 

 ger with a minute filament, as also on the next 2 segments; number of 

 filaments increases to 20-40 where best developed, and are present in de- 

 creasing number nearly to the posterior end. The branchial stem is broad, 

 conspicuous, nearly straight, with the filaments disposed in a trim row 

 on one side. In the first 10 or so branchial segments, the dorsal cirri ex- 

 ceed the branchiae in size, but thereafter the latter are stronger. 



Acicula and subacicular hooks are dark ; the first taper distally to 

 blunt points. Subacicular hooks are present from about the thirty-fifth 

 setiger to the end; they are distally bidentate, the lower tooth is the 

 larger and set nearly at right angles to the main shaft; the upper tooth 

 is somewhat curved ; they resemble the distal ends of the composite hooks, 

 which are also bidentate. 



Fauvel (1917, pp. 215-225) has made excellent, extensive studies on 

 the great amount of variation in this species, and has concluded (1932, 

 p. 133) that E. aphroditots and E. rousseaui Quatrefages (including E. 

 violaceo-maculata Ehlers) are the same. I follow this author's conclusions. 



Distribution. — Cosmopolitan. The records listed extend the distribu- 

 tion in the eastern Pacific, from Lower California, south to Colombia. 

 The bathymetric range is intertidal to 20 fms. 



Eunice afra Peters 

 Plate 6, Figs. 135-139 



Crossland, 1904, pp. 289-296, pi. 20, figs. 1-5; Fauvel, 1932, p. 135; 



Okuda, 1937, pp. 276-279, figs. 18-21. 

 Leodice filamentosa Treadwell, 1921, pp. 40-42, pi. 1, figs. 14-17, text 



figs. 117-126. 

 Not Monro, 1933, pt. 1, pp. 66-67. 

 Co//^c//o/2.— 634-37 (4). 



The prostomial antennae and peristomial cirri are short and irregu- 

 larly articulate. The latter are about half as long as the peristomial ring. 

 Branchiae are absent (pi. 6, fig. 139) from a long anterior region; they 

 are first present from setiger 19 or 20, with one or 2 filaments; by setiger 

 24 there are 2 filaments, this arrangement continues (pi. 6, fig. 136) at 

 least to setiger 56. Acicula and subacicular hooks are dark. Acicula are 

 thick, straight, taper distally to conical ends (pi. 6, fig. 137). Subacicu- 

 lar hooks are bidentate, the lateral tooth directed obliquely upward (pi. 



.L 



