of species which have not been recorded as found in the locaht}; 

 from which these were taken. The value of the collections, how- 

 ever, is not determined chiefly by the new and rare species found, 

 although these do have a real value. Much more important, in 

 many instances, are some of the most abundant and widely dis- 

 tributed forms found in these waters, whether considered from 

 the standpoint of theoretical or economic biology. The problems 

 of distribution, inter-relation of the different kinds of life, their 

 relation to environment and many others we have only begun to 

 study. 



The map PI. I. indicates the general region covered by the 

 sailings of the launch. Plates II and III show the position of the 

 hauls made by the dredge and trawl oft' the vSanta Monica Bay 

 region and the San Pedro region. Plate IV shows the hauls 

 made about Santa Catalina Island. These maps do not cover 

 two regions at which hauls were made ; they are : ( 1 ) In New- 

 port Bay and oft" the coast at Balboa and Huntington Beach; (2) 

 off the coast from Pt. Dume to a point near the Long Wharf at 

 vSanta Monica. 



The stations at which the dredge was used are indicated b_y 

 the letter D, the trawl by T. The numeral following indicates the 

 number of the dredge or trawl respectively. The numbers in 

 brackets represent stations practically coinciding with those indi- 

 cated by the preceding numbers. 



The drawing for Plate I was made by the Drawing Depart- 

 ment of the University. Those for Plates I, II and III were 

 made by Elmer Higgins. 



27 



