THE TJFE OF DEVILS LAKE 97 



Procladius sp. Several specimens, examined by Prof. Needham, 

 were taken in a surface tow in Creel Bay on July 6, 1911. "Ap- 

 parently a new species," but impossible of determination because of 

 poor condition. 



Sayomyia sp. One specimen was taken in a surface tow near 

 Bird Island, July 31, 1911. 



Odontmnyia sp. 



Stratiomyia sp. 



Soldier flies include two indeterminate species, both of which 

 are common as larvae in shallow water near shore among decaying 

 vegetation, and as pupae in decaying vegetation and under logs and 

 stones along shore. They have been taken in Main, Lamoreau and 

 Stump Lakes and Lake P, as well as in fresh waters. 



Nemotehis sp. Taken in Main Lake, Lake P and a fresh water 

 pond near Stump Lake. 



Tahanus sp. Adult horse flies are common in the Devils Lake 

 territory. "Larvae and pupae were quite common in the sand 

 at the waters edge" in Main and East Lakes and a fresh water pond 

 near Stump Lake. 



Chrysops sp. Deer flies are exceedingly common in all of the 

 Devils Lake territory. The larvae occur in "sand at the water 

 line." Thej^ are not common in the alkaline waters of the complex, 

 and probably develop mainly in fresh waters. 



Eristalis tenax Rat-tailed maggots ars common in decaying 

 vegetation along the shores of the main lake and Lake P. 



There are several species of beetles in the complex, but it has 

 not been possible to obtain identifications of most of them. 



Octhehius sp. is common and widely distributed thru the com- 

 plex. 



Bidessus lacustris. This and the following genus has been 

 determined by Dr. R. Matheson of Cornell. I have one record from 

 a surface tow near the station on July 14, 1911, 



Coelamhus. Two undetermined species were taken in the same 

 collection as the above. C. nubilus has been taken in Lake N. 



Deronectes sp. Common thruout the Devils Lake complex. Oc- 

 curs also in fresh waters. 



Berosus sp. "Larvae were numerous" at the grade across 

 Minnewaukan Bay, "and in a fresh water pond north of East 

 Lake." (1921). 



Hydrous triangularis. "Larvae were common at the Minne- 

 waukan grade" and in fresh waters (1921). 



Tropisiernus sp "Larvae were found at the Minnewaukan 

 grade," and in Six-Mile Bay, also in fresh waters. (1921). 



Agalus sp. There is one record only (Creel Bay 4/21/23). 



