76 ENTOMOLOGICAL SOCIETY 



All the larger orders are represented, the Hemiptera leading in 

 point of numbers with 23 species. 



DlPTERA. 



Of the Diptera there are fifteen species, the family Syrphidse 

 being the best represented, there being four species. None of the 

 Diptera are alpine. They are as follows : 



Gnophomyia tristissima Osten-Sacken. 



One specimen. Ranges from New York to Georgia and west 

 ward lo Colorado. 



Anthrax catulina Coquillett. 



Four specimens. Occurs in Washington and northern Cali 

 fornia. 



Erax jubatus Williston. 



A single specimen. This species was described from New 

 Mexico. 



Microdon xanthopilus Townsend. 



One specimen. Described from California. 



Syrphus arcuatus Fallen. 



One specimen. Occurs from Nova Scotia to New England, 

 westward to Alaska and California ; also in Europe. 



Sphcerophoria sulphnripes Thomson. 



One specimen. Described from California. 



Chrysochlamys croesus Osten-Sacken. 



A single specimen. Reported from Utah and New Mexico, 

 westward to Washington and California. 



Exorista vulgar is Fallen. 



One specimen. Occurs in New Hampshire, Idaho, and Wash 

 ington ; also in Europe. 



Calliphora erythrocephala Meigen. 

 " viridescens Desvoidy. 



One example of each. Both species occur over nearly the 

 whole of the United States, and the first also occurs in Europe. 



There also occurred on the snow the following Diptera, all in 

 too poor condition to admit of more than a generic determination. 



Tabanus sp. Phaonia sp. Limnophora sp. 



SarcopJiaga sp. Anthomyia sp. 



All these species were represented by single specimens except 

 the last, of which there occurred eight examples. 



