1899] ENTOMOLOGICAL NEWS. 181 



teiuesia; eiorht of these is the averag:e number found in each cell. 

 The egg is deposited after the cell is filled. The larvae of this spe- 

 cies, in common with many others, can devour more food than the 

 l>a rent wasp generally allows them; one of them that 1 experi- 

 mented with had no difficulty in disposing of four small spiders 

 immediately after consuming the maternal allowance. 



The parasites affecting these are few in number and are limited 

 to one species, viz . Chrysis conrulans, Fabr. 



This wasp. I believe, possesses the distinction of having a smaller 

 pei'centage of parasites than any other 1 have investigated. Of the 

 hundreds of cells I have examined only five contained parasites. 



This immunity is probably wholly due to the nests being com- 

 pleted mon hs earlier than the majority of parasites usually appear." 



A. Davidson, M. D., 

 Clifton, Arizona. 



Pi'of. F. W. Mally, of Hulen, Texas, has recently been elected, by 

 the directors of the Agricultural and Mechanical College of Texas, 

 State Entomologist and Professor of Entomology in the college. 



Dr. A. Fenyes has started on a collecting trip to Mexico, Texas, 

 New Mexico and Colorado, and will be gone Ave months. 



Dr. William Barnes is collecting Lepidoptera in Southern 

 Arizona. 



Dr Henry Skinner, Prof. A J. Snyder and Mr. Philip Laurent 

 are planuins: a collecting trip to the Rocky Mountains- 



The following is of interest as an early reference to Cicada septen- 

 clecim. The bi'ood refen*ed to seems to be that due in 1902. 



E. Foster, New Orleans. La 



" A respectable old gentleman, who has seen and observed the 

 locust at the diff'erent periods of their appearance, as noted below, 

 has favored the editor of the Register with the following memo- 

 randa : 



*' 'The locust appeared — 



" ' In 1749, in the mouth of May. 



" ' In 1766, they came out of the ground from the 14th to the 17th 

 of May. 



" ' In 178^ they came out fron the 16th to the 19th of May. 



" ' In 1800, from the 19th to the 26th of May. 



" ' In 1817, they did not appear until the beginning of June. It is 

 supposed the cold and wet weather retarded their progi'ess. 



" ' They continue from four to six weeks. and are harmless, except 

 to young and tender fruit trees or the twigs of older trees, wherein 

 the female deposits her eggs, which in a few days vivify, and the 

 twigs either break oft' or the young locust emerges and falls to the 

 g^round, and makes its way into the earth for another period of 

 seventeen vears '"— A^/Ze.«' Weekly Register, July 12, 1817, XII, 

 p. 310. ' ' 



