62 Trans. Acad, of St. Louis 



its dainty proboscis, a small caterpillar from which it was 

 sucking the juices. 



Smea diadema Fabr. [E. H. Gibson]. Feeding on 

 small beetle, June 22, 1916. 



Apiomerus crassipes Fabr. [E. H. Gibson]. Walked 

 sidewise when uncovered under loose board, June 22, 

 1916. 



Alydus eurinus Say. var. A. ater Dall. [0. Heideman]. 

 In flight and in manner of walking they closely resemble 

 wasps, October 27, 1916. 



DiPTERA 



Morellia micans Macq. [J. M. Aldrich]. Three of these 

 Diptera were found huddled together under the bark of 

 a dead tree, on November 26, 1916. They appeared dead 

 or frozen, but soon revived in the warmth of my pocket, 

 and became quite active. 



Trichiopodo radiata Loew. [C. H. T. Townsend]. Pair 

 in copulo at Wickes, IVIo., on sumac, June 28, 1918. 



Pyrgota undata Weid. [F. Knab]. Taken at lights 10 

 p. m. May 26, 1917. 



Tephritis aequalis Loew. [F. Knab]. Some wasp, as 

 yet undiscovered, had used this species of fly exclusively 

 in provisioning her nest in the hollow of a sumac stem. 

 The two lo\<^er cells, less than an inch in length, con- 

 tained each six flies, while the topmost cell was evidently 

 just being filled by the wasp-mother, and contained only 

 one fly. No wasp egg was found. 



Toxophora pellucida Coq. [C. T. Greene]. This Dip- 

 teron emerged from a bramble where it had evidently 

 been parasitic on wasps, since between the mud par- 

 titions were dead and shrunken Lepidopterous larvae, 

 the provisions stored by the Eumenid wasps for their 

 young. 



Tipula sp. [J. M. Aldrich]. Crane fly devoured by an 

 English sparrow. May 15, 1915. 



Proctacanthus milberti Macq. [F. Knab.] On several 



