660 



STATE BOARD OF AGRICULTURE. 



Fig. 310. 



Fig. 310. — Syrphus torvus : much enlarged. 



Fig. 311. — Larva a and i, and pupa c, of Syrphus torvus : much enlarged. 



S. americanus Wied. Westville, VI, 26, IX, 13, Merchantville, VI, 28 (Jn), 



New Brunswick, VI, 1, 16, Del. Water Gap, VII, 12 (Sm). 

 S. umbellatarum O. S. Riverton, VII, 30. 



DIDBA Macq. 



D. fuscipes Loew. Clementon, V, 16, Ocean Co., V, 18, Jamesburg, West- 

 ville, VIII, 21. 



XANTHOGRAMMA Schiner. 



X. emarginata Say. Westville. 



X. flavipes Loew. Newark, VI, 16, Morris Plains, VI, 25. 



X. sequalis Loew. Clementon, V, 9 (Viereck). 





ALLOGRAPTA O. S. 



A. obliqua Say. Caldwell (Cr), Atlantic Highlands, VII, 11 (Love), West- 

 ville, VI, 27, Atlantic City, VII, 15, Riverton, IX, 5. 



MESOGRAMMA Loew. 



M. politum Say. Gloucester, VIII, 14, Sandy Hook, VIII, 17, Riverton, IX, 

 5 (Jn), Caldwell (Cr) : this species is sometimes a corn pollen feeder in 

 the larval stage, and occurred in large numbers in the summer of 1899 

 between the leaves and stalk of corn in Atlantic county. 



M. marginatum Say. Common throughout the State, VI to X. 



