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RoHWER (S. A.). New Sawflies of the Subfamily Diprioninae (Hym.). 

 — Proc. Entom. Soc. Washington, D.C., xx, no. 4, April 1918, 

 pp. 79-90. [Received 15th November 1918.] 



This preliminary paper outlines the classification used in a revision 

 of the species of the subfamily Diprioninae. 



Keys are given (1) to genera based on the adults, (2) to the subgenera 

 of Diprion, Schrank, and Neodiprion, gen. n., and (3) to the species 

 of Zadiprion, subgen. n. 



The following new species are described : — Augomonoctenus libocedri, 

 gen. et sp. n.. reared from larvae feeding in the cones of Libocedrus 

 decvrrens in Oregon ; Neodiprion {Zadiprion) vallicola, from Mexico ; 

 Neodiprion dyari, bred from larvae on Pinus virginiona, in Virginia ; 

 N. scutellatus from Washington; N. mundus from California ; N. vir- 

 giniana and N. qffinis, reared from larvae on Pinus virginiana in West 

 Virginia ; and N. maura, reared from larvae on Jack pine {Pinus 

 hanksiana) in Wisconsin. 



CusHMAN (R. A.). A Convenient Method of Handling large Numbers 

 of Individuals in Life-History Studies of Insects. — Proc. Entom. 

 Soc. Waihingion, D.C., xx, no. 5, May 1918, pp. 112-114, 1 plate. 

 [Received 15th November 1918.] 



The method here outlined, which is not applicable to all sorts of 

 insects, but is in fact probably limited in practice to externally feeding 

 ones, consists in starting with an ovipositing female, or a large number 

 of eggs or larvae in one cage. As changes to be recorded take place, 

 those individuals that have undergone them are transferred to another 

 cage, leaving the unchanged one in the original cage. The number 

 of cages to be handled gradually increases, but never reaches the 

 number that would be necessary in starting with the same number 

 of individuals when kept isolated. 



Each original cage is given a number or letter and each subsequent 

 cage is represented by a decimal, the stage or instar in any cage being 

 thus indicated by the number of decimals. 



The paper concludes with a copy of a page from the author's note- 

 book on the life-history of the currant sawfly, Pteronus (Pteronidea) 

 ribesii, Scop., showing the method adopted. 



Baker (A. C). The Identity of Aphis circezandis, Fitch. — Proc. 

 Entom. Soc. Washington, D.C., xx, no. 6. June 1918, pp. 130-131. 

 [Received 15th November 1918.] 



The identity of Aphis circezandis, Fitch, collected on Gallium 

 circaezans in Salem is discussed, the conclusion being reached that 

 this species is identical with A. gossypii, Glover. 



Gibson (A.). Report on Insects for the Year ; Division no. 1, Ottawa 

 District. — iSth Ann. Rept. Entom. Soc. Ontario for 1917, Toronto, 

 1918, pp. 18-20. [Received 16th November 1918.] 



The injurious insects reported during the year included Diabrotica 

 vittata, F. (striped cucumber beetle), which was abimdant on cucumbers 

 and squashes during the early summer, and was controlled by a 



