COMPLETE HARTMAN : POLYCHAETES FROM CALIFORNIA 83 



pinnata Ehlers, Pholo'e glabra Hartman, Pectinaria calif orniensis Hart- 

 man and Chloeia pinnata Moore. At maximum occurrence, Marphysa 

 disjuncta has numbered 35 specimens, associated with 53 species of 

 polychaetes numbering 329 specimens, and other invertebrates bringing 

 the total to 125 species and 1397 specimens of metazoan animals. 



Marphysa conferta Moore, 1911 



Moore, 1911, pp. 252-254, pi. 16, figs. 29-34. 



Collections. This species has been recovered from slope depths, in 

 rocky bottoms, from Santa Monica south to southernmost parts of Cali- 

 fornia. 



It was known previously only through a single specimen taken off 

 Santa Rosa Island, in 38-40 fms, which measured only 24 mm long 

 by 1.9 mm wide for 57 segments; it was a female filled with ova. Based 

 on present finds, total length is 33 mm, width 2 mm. The prostomium 

 is pale, diffused with red medially, and the peristomium is a bright red 

 ring. The body is salmon colored and the ova in the posterior region 

 of the body are deep yellow. Branchiae are abruptly present from the 

 seventh setigerous segment and present on the 10 following segments; 

 they are absent thereafter. Branchial filaments number 5 to 7, are in 

 pinnate arrangement, and long so as to meet middorsally. 



Ventral cirri are cirriform through 4 segments and padlike from the 

 fifth segment; the change is gradual. Parapodial setae are of 4 kinds. 

 Composite falcigers are distally bifid and occur in dense, subacicular 

 fascicles; they diminish in number going back. Comb setae have 16 to 

 18 short, mucronate teeth and one lateral margin has a long, slender 

 filament. Subacicular hooks are yellow, distally bifid and hooded. 

 Acicula are embedded, yellow rods, tapering distally to a point. 



M. conferta is known only from southern California, in depths to 

 76-200 meters, in rocky habitats. 



Marphysa mortenseni Monro, 1928 



Monro, 1928, pp. 86-88, figs. 9-12. 

 Hartman, 1944a, p. 129. 



Collections. Single specimens come from scattered areas, off Redondo 

 Beach, California, south to Cortes bank, off the western Mexican border, 

 in depths of 20-100 meters, in rubbly or shelly bottoms. 



This species is characterized by having a prostomium broadly rounded 

 in front ; antennae are very short, cirriform, and there are no eyes. 



