448 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 4 



Reference to this table shows that the shorter period for females 

 occurred in squares infested on twenty-five out of the thirty-eight 

 days when the lots of infested squares were large and more than ten 

 weevils were reared, and the ratio for smaller lots was only seven out 

 of thirteen in which the females showed the shorter period. Other 

 things being equal, the larger the lot of squares, the better the con- 

 dition for food and the shorter the developmental period of the weevils 

 reared. It was in these larger lots that the predominance of females 

 among the earliest weevils from a given day's squares was most 

 noticeable. 



THE COCCIDiE OF LOUISIANA ^ 

 Second Paper 



By T. C. Barber, 



Agent and Expert, Audubon Park Laboratory, U. S. Bureau of Entomology 



The following list of Coccidae is the result of a rather extended 

 search among the flora of Audubon Park, New Orleans, La., com- 

 menced more than a year ago, to ascertain what species of scale insects 

 were the main source of food supply for the Argentine Ant, Irido- 

 myrmex humilis Mayr. A preliminary list of the "Coccidse of Audubon 

 Park" was published in this Journal last year (Vol. Ill, No. 5, p. 420- 

 425, 1910) and included 34 species, with the host plants upon which 

 they were collected. Since this list appeared, a considerable number 

 of additional species have been collected, and the writer concluded 

 to add to his own collections all species previously collected in Louisi- 

 ana of which he could find reliable record, with the intention of com- 

 mencing a check list of the Coccidae of the state. 



That this hst is not nearly complete is proven by the number 

 of newly-recorded species which have been added to it within the 

 past year. Close search through our scanty available literature has 

 resulted in finding records of 35 species previous to 1910. The present 

 list almost doubles this number, as it includes 65 species, all but 20 

 of which are represented in Audubon Park. However, it is obviously 

 more complete than the records which were available previously. 



In order to insure accuracy, all determinations of material col- 

 lected by the writer have been made by the Bureau of Entomology 

 at Washington, D. C, through the courtesy of Dr. L. O. Howard. 

 The writer herewith expresses his deep indebtedness to Messrs. J. G. 



^Published by permission of the Chief of the Bureau of Entomology. 



