328 PROCEEDINGS OF THE ACADEMY OF [April, 



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



THE COAST OF SOUTHER^ CALIFORNIA IN 1904: II. P0LYN0ID2E, 



APHRODITIDiE and SEGALEONID^E.' 



BY J. PERCY MOORE. 



POLYNOIDJE. 



This family of scaled annelids is well represented in the collection 

 by twenty-six species, about half of which belong to Hannothoe and 

 related genera or, as they are here regarded because of their inter- 

 grading characters, subgenera. Twelve species are considered to 

 have been previously undescribed; four species, previously known 

 from Japanese waters, are recorded from the American side of the 

 Pacific for the first time; nine are more or less well known on the 

 shores of California or northward and one species is doubtful. It is 

 worthy of remark that of the twelve species described as new no less 

 than eight lack pigmented eyes, so far, at least, as can be determined 

 without recourse to sections. These are distributed through a wide 

 range of genera. With the exception of Nemedia microlepida they 

 all came from considerable to great depths (500-2,000 fathoms). 

 One species {Polynoe renotubulata) is furtiier remarkable for having the 

 nephridial papillae prolonged into slender tubes which reach far above 

 or beyond the parapodia. 



. Halosydna pulchra (Johnson). 



Pobjnoc pulchra Johnson. Proc. Cal. Acad. Sci. (3), I (1897), p. 177. 

 Several specimens, the largest of which is 35 mm. long and has 60 

 segments, occur in the collection. Except in two cases nothing is 

 stated on the labels regarding the commensal associations which are 

 frecjuent with this species. All have the medial or the posterior half 

 of the elytra more or less closely speckled with brown spots. Some 

 have the dorsum of each segment conspicuousl}^ marked with two 

 brown cross-bars. The prostomium of this species is intermediate in 

 some respects between the form characterizing the Lepidonotinae and 

 the Harmothoinse. In general it resembles the former most closely, 

 free cephalic peaks being absent and the cephalic lobes prolonged 



■ Part I was published in these Proceedings for June, 1909, pp. 321-351, 

 Pis. XV and XVI. 



