1909.] NATURAL SCIENCES OF PHILADELPHIA. 235 



P0LYCH.ET0US ANNELIDS FROM MONTEREY BAY AND SAN DIEGO, 



CALIFORNIA. 



BY J. PERCY MOORE, PH.D. 



In this paper are recorded the results of a study of the California 

 Polychseta belonging to the Museum of Leland Stanford Junior Uni- 

 versity, which were submitted to me at various times by Profs. 

 Harold Heath and W. K. Fisher of that institution. Descriptions of a 

 few new species from San Diego have been published already in these 

 Proceedings for 1904, pp. 484-503. The localities at which the collec- 

 tions were made are limited to two, namely : the vicinity of Monterey 

 Bay, at about the middle of the California coast, where Mr. M. H. 

 Spaulding collected in 1903 and 1904, chiefly at Pacific Grove, and 

 San Diego, chiefly on a sand-bar in the bay, near the southern boundary 

 of California, where Prof. E. C. Starks collected during 1902 and 

 1903. At both places the collecting was nearly limited to the littoral 

 zone between tide limits, though a few dredgings were also made. 

 A few specimens collected at Pacific Grove by Prof. Heath and 

 presented to this Academy some years ago are also mentioned. In 

 all cases where nothing different is stated it will be understood that 

 the specimens were taken between tides and by one of the two gentle- 

 men who made the bulk of the collections. Also, unless otherwise 

 stated, the types of new species are in the Museum of Stanford Uni- 

 versity. A set of cotypes and duplicates has been added to the col- 

 lection of the Academy of Natural Sciences of Philadelphia. 



The total number of species mentioned is 64, of which 21 are con- 

 sidered to have been previously undescribed. While this must rep- 

 resent a small part only of the Polychsete fauna of that region the 

 records are important because the}' are in nearly all cases material 

 extensions of the known ranges of the species. Scarcely anything 

 has hitherto been published concerning the Polychseta of the coast 

 of the southern half of California or of the Pacific coast of Mexico and 

 a rich field for faunal investigation remains. When these collections 

 were placed in my hands for study it was hoped that Prof. H. P. 

 Johnson's projected paper on the Polychseta of California would be 

 available for their determination, but this much-desired publication 

 has been unavoidably delayed. 



