650 STATE BOARD OF AGRICULTURE. 



TOXOPHORA Meigen. 

 T. amphitea Walk. Buena Vista, VI, 11, Atco, VI, 18, DaCosta, VII. 30. 



Family THEREVIDiE. 



Called "stiletto flies " by Comstock, because of their slender, pointed abdo- 

 men. They resemble the robber flies, but have longer legs and are more 

 slightly built. They are also predatory, but the lips are broad and fleshy and 

 they are not nearly so active as the asilidse. 



The larvae are long and slender, the segments constricted so that they seem 

 doubled in number, and they live in mold, fungi, rotten wood and vegetable 

 decay generally, feeding sometimes upon the material among which they are 

 found, sometimes upon such other insects as come in their way. 



They can scarcely be said to be beneficial, for the prey of the adults does not 

 consist of insects that are harmful to the farmer, so far as I am aware. 



PSILOCEPHALA Zett. 



P. haemorrhoidalis Macq. Avalon, VI, 9, Cape May, VI, 14, Newark, VI, 

 16, Jamesburg, VII, 4, Westville, VIII, 13, Shiloh, IX, 1. 



P. marmorata Coq. Cape May, VI, 14, Avalon, VI, 8. 



P. aldrichi Coq. Jamesburg VII, 4, Westville, VII, 12. 



P. rufiventris Loew. Clementon, V, 30, Pleasant ville. VI, 13 (Lt), West- 

 ville, VII, 2, Anglesea, VII, 16, Atlantic City, VIII, Avalon, VI, 9. 



P. scutellaris Lowe. Jamesburg, VII, 4, Dunnfield, Del. Water Gap, VII, 8, 

 12. 



P. pictipennis Wied. Riverton, VII, 3, Jamesburg, VII, 4, Atco, VI, 18, 

 VII, 9. 



THEREVA Latr. 



T. flavicincta Loew. Caldwell (Cr), Dunnfield, Del. Water Gap, VII, 15. 

 T. otiosa Coq. Riverton V, 14. 



TABUDA Walker. 



T. fulvipes Walker. Lahaway, IV, 20 (Sm), Clementon, IV, 15, Westville, 

 IV, 16, Riverton, IV, 17, 30. 



