UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



ZOOLOGY 



Vol. 11, No. 10, pp. 181-196, pis. 10-12 November 26, 1913 



FOURTH TAXONOMIC REPORT 



ON THE 



COPEPODA OF THE SAN DIEGO REGION 



CALVIN O. ESTEKLY 



The eopepods described here have been found since the last 

 report was published (Esterly, 1911). With one exception the 

 forms are regarded as new, though some are represented by single 

 specimens. It should be understood, however, that in such cases 

 the descriptions are more or less tentative, since they may need 

 modification if more material is obtained ; there is no intention 

 of stating more than is known at present, that is, that the one 

 animal differs from those which represent other species to such 

 a degree that the formation of a new species is advisable. Ex- 

 perience has shown that additional material confirms the conclu- 

 sion as to specific rank based on a single specimen, and it is 

 unlikely that we are dealing in any of these cases with an indi- 

 vidual variation that is without specific value. 



The descriptions given are brief, and the figures do not cover 

 all parts, but it is believed that they provide for the recognition 

 of the forms discussed. The hauls in which the animals were 

 found are given by number, and the complete data for the hauLs 

 will be found in a publication of the Scripps Institution now in 

 course of preparation. 



