150 PROCEEDINGS OF THE NATIONAL MUSEUM vou 85 



NEPHTYS CALIFORNIENSIS. new species 



FlOUBH 64 



Nephthijs caeca Moore. 1909, p. 243 (part). (See p. 148 herein.) 



fNephthys caeca ciliata Berkeley, 1935, p. 770, 



f Nephthijs assimilis Trbadwexl, 1914, p. 193 (part). 



Length 130 to 300 mm ; width 6 to 10 mm in anterior third or widest 

 part; number of segments 100 to 160; broad, depressed, tapering grad- 

 ually posteriorly to a slender, caudal end. Segments marked by faint, 

 segmental lines dorsally and ventrally. 



en 



C3 



FIG0KE 64. — Nephtys califoniieims, new species : a, Prostomium and part of first .segment 

 in dorsal view (from an individual with proboscis protruded) ; h, same, from an 

 individual with proboscis retracted ; c, portion of a bristled, postlamellar seta seen 

 somewhat from the side ; d, same, in face view ; e, third parapodium in posterior view ; 



f, twenty-fifth parapodium in anterior view (setae diagraiiimatically represented) ; 



g, recurved cirrus and neuropodium of seventy-fifth parapodium in anterior view ; 

 h, a posterior parapodium ; j, portion of a barred, prelamellar seta. 



Prostomium roughly trapezoidal, widest anteriorly (fig. 64, a, 5), 

 anterior margin rounded, spatulate; frontal antennae inserted at 

 widest part of anterior margin. A characteristic pigmented patch 

 on posterior third, what Moore (1909, p. 243) has designated a "spread 

 eagle" (fig. 64, a, h). Nuchal papillae slitlike, hardly visible. 



