300 JOURNAL OP ECONOMIC ENTOMOLOGY [Vol. 1 



Although P. nigrirostris is very common in northern Ne^V York and 

 I have taken numerous specimens while collecting, I have made no 

 other observations on its habits in that region. Specimens in my col- 

 lection which were taken at Potsdam bear dates ranging from INIarch 

 19 to August 1. As the former date is too early to expect any trans- 

 formations to have taken place, it seems probable that this species "hi- 

 bernates as an adult. 



THE OVIPOSITION OF CHILOCORUS BIVULNERUS 



MULSANT 



By A. A. GiBAULT 



As there have been no very complete observations recorded in the 

 literature of economic entomology in regard to the place of deposition, 

 and the morphology, of the egg of this scale-eating ladybird, the fol- 

 lowing description of it and record of observations on the place of 

 deposition may be of contributory value, particularly since previous 

 observations are not in accordance with these and are more or less 

 fragmentary. 



The egg of this species has never been described, and I believe the 

 first observation made on its place of deposition was by Fiske (1903) 

 in Georgia, who stated that they were found in rather large numbers 

 on the trunk of old peach trees infested with the cherry scale (Aspi- 

 diotus for'hesi Johnson). The eggs were deposited under the coccids, 

 in a manner somewhat similar to the mode of deposition of Chilocorus 

 sirrvilis Rossi (Marlatt, 1902. 1906). However, Smith (1897) men- 

 tioned their color, relative size and shape and stated that they are 

 "set on end in little groups, * * * ^nd in a general way re- 

 sembling the eggs of other ladybirds * *." And years previously, 

 Townend Glover (1859) wrote that they were deposited on the leaves 

 and trunks of trees infested with coccids. Dimmock (1906) gives no 

 additional data. 



For the past two or three years I have made more or less desultory 

 observations on livvlnerns, but did not find its eggs until the middle 

 of April, 1907, at Olden, jMissouri. On a trunk of an apple tree 

 infested with Chionuspis furfura (Fitch), the adults were quite 

 abundant, and careful searches under loose pieces of the outer bark 

 and in small crevices along the trunk disclosed the eggs deposited in 

 such places. None were found under the coccids. I was able to prove 

 these eggs to be those of hivulnenis several months later when at 

 New Richmond, Ohio, in June, 1907, a pair of the beetles in confine- 



