NO. 15 



SMITHSONIAN EXPLORATIONS, I92I 



59 



Hurricane. This delay could have been used to good advantage for 

 collecting except for the fact that the weather became cloudy and 

 windy and very unfavorable. Doctor Aldrich, after several days 

 delay, went on to Anchorage and spent a few more days collecting 

 there while awaiting his baggage. Here the weather was again favor- 

 able so that the result was very good. Resuming his journey Doctor 

 Aldrich went to Seward with the intention of spending at least ten 

 days in getting a collection of the insects of the humid coast region. 

 The weather, however, gradually became more rainy, greatly limiting 

 the result and finally making it expedient to take the boat from Seward 

 about a week after arrival. 



.-.Sfas,***:^ 



Fig. 63. 



-Middle fork of Cluilitna. a little muuIi <<\ Broad Pass. Corduroy 

 bridge of the Alaskan Enoinecrino- Commission. 



The expedition resulted in the accession of about 10,000 specimens 

 of Alaska insects, nearly all from the interior region. As far as they 

 have been studied up to the present time they indicate three somewhat 

 distinct faunal regions in the territory covered. 



First, the maritime fauna consisting of the insects living upon the 

 seashore and depending upon the ocean for necessary conditions of 

 existence. Insects of this group extend down the coast, in many cases 

 as far as the State of Washington and some even so far as San 

 Francisco; while it is presumed that they would also be found more 

 or less in the Asiatic side of Bering Sea. 



The second element is that of the humid mountain region along the 

 coast; a considerable part of this fauna extends to Puget Sound, 



