ENTOMOLOGICflL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XI. 



JANUABY, 1900. 



No. 1 



CONTENTS: 



Kellogg Notes on the Life-History 

 and Structure of Blepharocera 

 Capitata Loew . . . . 305 



Slosson Additional List of Insects 

 Taken in Alpine Region of Mt 

 Washington .819 



Johnson Some Notes and Descrip- 

 tions of Seven New Species and 

 One New Genus of Diptera 323 



Barnes-Notes on North America 

 Diurnals, with Some Additions 

 and Corrections to Dr. Skinner's 

 Catalogue... 328 



Ho /land A Description of a Variety 

 of Argynnis Nitocris from Chi- 

 huahua, Mexico 332 



Dyar A New Cochildian of the Pa- 

 learctic Group ... 



Editorial 



Economic Entomology 



Notes and News 340 



Entomological Literature 342 



Doings of Societies 34K 



Exchanges i. ii 



NOTES ON THE LIFE-HISTORY AND STRUCTURE OF 

 BLEPHAROCERA CAPITATA LOEW. 



BY VERNON L. KELLOG<;, 

 Stanford University, California. 



I. 



In the swift, tumbling little stream of Coy Glen, which has 

 cut its way from the summit of West Hill into the valley at 

 the head of Cay nga Lake, near Ithaca, X. V.. an interesting 

 fly makes itself abundantly at home. This fly is nicjilmwrrii 

 >'(tj>if</fa Loew, one of the few North American species of its 

 family. In Comstock's Manual there is a picture of the larva 

 and of the pupa of this fly. The midge itself looks like a 

 small crane-fly. Prof. Comstock gives in the Manual some 

 account of the -BZepAarocera's interesting habit sand transforma- 

 tions. The larva and pupa are strangely modi lied to adapt 

 themselves to their aquatic life, for both larva and pupa live 

 submerged, clinging to the rock bed of the stream. They 

 gather in groups, forming black patches on the bed, in the 

 swift shallow parts of the brook. The larva' hold lirmh to 



