130 



University of California Publications in Zoology [Vol. 13 



The total of animals obtained among the Schizopoda, at the surface, 

 is small, also, when compared to the numbers of the other groups. 

 About 39,000 specimens of the two commoner chaetognaths were taken 

 at the surface (Michael, 1911, pp. 115, 145). The two most abundant 

 copepods appeared in the number of about 23,000 (Esterly, 1912, 

 p. 281), and about 7200 specimens of Pleurohracliia were obtained 

 (Esterlj^, 1914b, p. 25). As can be seen in table 4, approximately 750 

 schizopods were present in the surface hauls. 



Table 5, dealing with the hauls made with the Kofoid horizontal 

 closing net and with the vertical net, is similar to table 4 in arrange- 

 ment. 



TABLE 5 



Number of Hauls, Haul Frequency and Numbers of Animals for Each Month; 



Horizontal and Vertical Closing Nets 



I. Horizontal Nets 





Total 



Suce. 







Numbers of 



animals 









Euphausia 



Nyctiphanes Thysanoessa 



Nematoscelis 



Total 



Month 



Hauls 



Hauls 



Freq. 



pacifica 



simplex 



gregaria 



difficilis 





Feb. 



































March 



8 



2 



25 















11 



11 



April 



19 































June 



23 



1 



4 



1 















1 



July 



47 































August 



2 































Sept. 



8 



2 



25 



8 















8 



Oct. 



25 



3 



12 



8 











1 



9 



Nov. 



16 



10 



65 



16 







1 



8 



25 



Dec. 



23 



20 



87 



362 



663 



5 







1030 











II. Vertical Nets 









Feb. 



63 



3 



5 



87 















87 



March 



105 



27 



26 



880 











13 



893 



April 



46 



14 



30 



187 











4 



141 



June 



205 



3 



1.5 



3 















3 



July 



9 































August 



68 































Sept. 



































Oct. 



38 



1 



3 



2 















2 



Nov. 



19 



3 



16 



10 



7 











17 



Dec. 



90 



9 



10 



7 



4 



1 







12 



Table 5 does not give the distribution by depths, but shows only 

 the catches of the nets for each species and the totals during each 

 month. The two parts of the table are in general agreement in that 

 hauls during the warmer months (June through October) are notably 



