Ecological and Behavior Notes 65 



laboratory window at Wickes, June 12, 1917. 



llylemyia cilicrura Rdi. [J. M. Aldrich]. Tliis was 

 taken from a milkweed blossom where it was being de- 

 voured by a flower spider, Misumena. 



Cachliomyia macellaria Fab. [C. 11. T. Townsend]. 

 Being devoured by a young spider, Phidippus sp. [J. H. 

 Emerton]. 



Phormia regina Meigen [C. H. T. Townsend]. Many 

 of these flies were in the head of a dead robin, perhaps 

 ovipositing. May 20, 1916. 



Psoropliora ciliata Fab. [J. M. Aldrich]. This fly's 

 method of alighting on one's flesh is very similar to that 

 of the mosquito, but its bite on August 30, seemed more 

 painful. 



Actina viridis Say. [J. M. Aldrich]. Two living speci- 

 mens were taken in April, and in September a number of 

 their puparia were found in manure. 



Empis sp. [F. Knab].* At 4 p. m. on a September day, 

 about a hundred of these were doing a sun dance for sev- 

 eral hours in a small sunny spot in a shady road. They 

 hovered constantly in one spot, about three feet from the 

 ground. No others were to be seen that day, but at 10 

 'clock the next morning a similar group was performing 

 in the same manner further down the road, this time in a 

 shady spot. 



Copecrypta riificaiidaWnlp. [C.H.T.Townsend]. This 

 fly was abundant on Fox Creek, at Allenton, August 

 21. 



Ogcodes eugonatus Loew. [F. Knab]. This fly had 

 been used for provisions by an unknown wasp. One 

 compartment in the elder stem contained four flies, and 

 the cell on the other side of the sawdust partition con- 

 tained only one and was evidently unfinished. 



•Later Identified by J. M. Aldrich as EmpIs clausa, Loew. 



