ENTOMOLOGY. 161 



The hronze apple-tree weevil,, F. II. Chittenden (pp. 37-44). — Mag- 

 dalis oenescens is reported as having attacked apple trees in the State 

 of Washington. The varieties most injured are the Baldwin and Ben 

 Davis; King of Tompkins, Northern Spy, and Bellilower being nearly- 

 free from infestation. This insect was found b}- A. D. Hopkins at 

 Corvallis, Oregon, and has been reported bj^ Jas. Fletcher from Brit- 

 ish Columbia. Notes are given on the life histor}" and habits of the 

 insect by C. V. Piper, who believes that the attack of this insect is 

 made subsequent to injury caused by the fungus disease known as 

 canker. 



Tv^o new Cecidomyians destructive to hvds of roses, D. W. Coquil- 

 Jett (pp. 44-48).— These insects, which are described as new species 

 under the names of Diplosis rosivora and Neocerata rhodophaga, have 

 been reported from Washington, D. C, New York, and New Jersey. 

 The life histor}' of the species is not known to the author. Rose 

 growers have had considerable success in combating these insects with 

 Persian insect powder, buhach, and refuse tobacco stems. 



A nevj vioh4 p>est, D. W. CoquiUett (pp. 48-51). — This insect is 

 reported as attacking the leaves of sweet violets in Washington, D. C. 

 The species has also been received from New York and Virginia. It is 

 described under the name Diplosis violicola. The remedies which 

 have been tried against the insect are hand picking of infested leaves 

 and fumigation with hydrocyanic-acid gas. 



Insects and the u^cather; observations during the season of 1899^ F. 

 II. Chittenden (pp. 51-64). — The author made observations on the 

 eli'ect of the cold winter of 1898-99 upon insects. He believes that 

 the unusual severit}' of the weather was favorable to Northern insects 

 but unfavorable to insects of Southern range. Notes are given on the 

 apparent influence of the weather upon a considerable number of 

 species of insects. The author concludes that the mean winter tem- 

 perature has more effect in determining the rarit}' or abundance of 

 insect species than has the mean summer temperature. 



Food plants and w\jury of Worth American sjyecies of Agrihis^ F. II. 

 Chittenden (pp. 64-68). — Five species of this genus have been reported 

 as injurious to birch, poplar, chestnut, oak, Lombard}' poplar, rasp- 

 berry, blackberry, and pear trees. Agrilus anxius caused considerable 

 damage in parts of Buffalo, and Mr. M. F. Adams reported that the 

 attacks of this insect were made subsequent to injuries produced by 

 Dryoljates pvhescens. The insect has also been reported from Ann 

 Arbor, Mich. One parasite {Phasgonophora sulcata) has been reared 

 from this species. Agrilus otiosus feeds upon dogwood, butternut, 

 and redbud. A. hilineatus is reported as injuring wild chestnut 

 trees in Georgia. A list of 32 species of this genus is given, together 

 with brief notes on their distribution and food plants. 



