182 



JOUKNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 2 



ber of eggs laid each day varies from one or two to as iiiauy as fifty 

 or sixty. Thirty per day is not far from the normal nnmber in warm 

 weather when the food supply is abundant. It appears probable, 

 however, that the queens deposit much more rapidly in large colo- 

 nies, although, from the nature of the case, this cannot be verified 

 by direct observation. Egg deposition becomes very slow, or ceases 

 entirely, when the daily mean temperature falls below 68° F. 



Practically all queens under observation have shown a disposition 

 to suspend egg deposition entirely for longer or shorter periods, 



Fig. 4. — The Argeutiue aiit: «. adult male; «i, head of mnle: «..', petiole 

 of male ; b, worker ; bl, head of worker ; b2, petiole of worker ; c. fertile queen ; 

 c2, head and petiole of queen; all greatly enlarged (from original drawings 

 made under the author's direction by Miss C. M. King). 



