1918] Esscnhcrg: Distvihution of ihe Folynoidae 



201 



140 ■ 



a30° 



12^0' 



^■±o' 



aoo; 

 50 



Jtxl 



ii?= 



40 



30 



lua^m as 



aza+lan 

 ^JanBlas 



^20 



aoor 



140' 



13 O 



oao^ 



no- 



^40 



130 



aao^ 



^±o 



^oo 



Aug. 



40 



mas. 



Iaza4-Un 



30 



L-io*' a3o« aao 



aoo 



Fig. 5. Distribution of surface temperatures off the Pacific coast of North 

 America in July and August. After Thorade (1909). 



