Kansas University Science Bulletin. 



Vol. II, No. 14. JUNE, 1904. 1^0^x11,™!;. 



NOTES ON AND DESCRIPTIONS OF NORTH 

 AMERICAN DIPTERA. 



BY C. F. ADAMS. 



TN presenting this paper I have, as usual, to thank Drs. F. H. 

 Snow and S. W. Williston for kindnesses too numerous to 

 mention. I take much pleasure, also, in acknowledging the 

 loan of type material of Leptidae by Prof. C. W. Johnson, To 

 Profs. C. H. Fernald and R. K. Beattie thanks are due for 

 material for study. To Prof. J. M, Aldrich I owe special 

 thanks for references. 



Anopheles pseudopunctipennis Theobald. 



Specimens collected by Dr. F. H. Snow during August in 

 Oak Creek canyon and along Bill Williams Fork, Arizona, 

 agree with Theobald's description so far as it goes. "The occi- 

 put is largely covered with upright black scales ; there is a double 

 median line of upright white scales which are replaced ante- 

 riorly between the eyes by long white hairs ; the narrow occip- 

 ital orbits are nearly bare, having a few long black hairs. The 

 thorax has a double median white line on anterior part of 

 mesonotum, extending a short distance backward. It appears 

 to be a continuation of the similarly colored line of the head, 

 but the scales are more cylindrical, i. e., they are not broad- 

 ened any at the apex. The remainder of the mesonotum and 

 the scutellum are covered with light brown pile. If perfect 

 specimens from the type locality should prove the head and 

 thorax to be different from the above description, then the 

 Arizona specimens will need another name. 



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