234 PROCEEDINGS OF THE ACADEMY OF [April, 



THE POLYCH^TOUS ANNELIDS DREDGED BY THE U. S. S. "ALBATROSS" 



OFF THE COAST OF SOUTHERN CALIFORNIA IN 1904: 



III. EUPHROSYNID.5; TO GONIADID^. 



BY J. PERCY MOORE. 



The present paper is in continuation of two parts already published 

 under the same title and completes the Nereidiformia. Parts I and 

 II were published in these Proceedings for June, 1909, and April, 1910, 

 respectively. A fourth part dealing with the remaining Polychseta 

 and completing the report is nearly ready for publication. The large 

 number of species that it has been necessary to name and describe 

 in this paper further illustrates the richness of the Polychsete fauna 

 of California and particularly of Monterey Bay and emphasizes the 

 incompleteness of our knowledge of the subject. 



EUPHROSYNID^. 



Four species of Euphrosyne, two of which are previously undescribed, 

 represent this family. 



; Euphrosyne bicirrata Moore. 



^^ Euphrosyne bicirrata Moore. Proc. Acad. Nat. Sci. Phila., 1905, pp. 532- 



534, PI. XXXIV, figs. S-12. 



Two specimens of 7.5 and 15 mm. long, each having 26 segments. 

 The setse are remarkably long, the notopodials often exceeding the 

 width of the body, and agree in character and distribution with the 

 ty]3e. There are six or seven pairs of gills on each somite, each con- 

 sisting of two filaments which are subequal on the larger specimen and 

 mostly distinctly unequal on the other; rarely one or two smaller 

 gills are added. The caruncle of the smaller specimen reaches to the 

 anterior border of V. Median tentacle exceeds two-thirds the caruncle, 

 the distal half being filamentous. IMiddle cirrus between second and 

 third gills from dorsum. 



Stations 4,339, off Point Loma Lighthouse, vicinity of San Diego, 

 241-369 fathoms, green mud; 4,549, Monterey Bay, off Point Pinos 

 Lighthouse, 56-57 fathoms, coarse sand, shells and rock. 



U /Euphrosyne hortensis Moore. 



Euphrosyne hortensis Moore. Proc. Acad. Nat. Sci. Phila., 1905, pp. 534- 

 536, PI. XXXIV, figs. 13-1 G. 



Two specimens of nine and ten millimeters long have 29 and 31 

 segments, respectively. The caruncle reaches the middle of VI. The 



s ^ 



