THE CANADIAN ENTOMOLOGIST 281 



considerable number of Lepidoptera, 20 species of which are illustrated on the 

 two plates by excellent half-tones from photographs. 



Four species of this order are reported as having been present in the province 

 in destructive numbers, viz., the forest tent-caterpillar (Malacosoma pluvialis), 

 the tortoise-shell butterfly (Aglais calif ornica), the alfalfa loopcr {Autographa 

 calif ornica) and a tussock moth (Hemerocampa vetusta gulosa), which was dev- 

 astating Douglas F"ir at Chase, B.C. 



Report of the Canadian Arctic Expedition, 1913-18. — Vol. Ill — Insects. 

 Southern Party 1913-16. Ottawa, 1919. 



Six parts of this volume have thus far been issued. Most of the collec- 

 tions in all the orders were made by Mr. Frits Johansen, and a large part of 

 the material was collected at Bernard Harbour, Dolphin and Union Straits, 

 Northwest Territories, and at Nome and other localities on the Arctic coast of 

 Alaska. 



Part A, Collembola. By Justus W. F'olsom. Pp. 1-29, including 8 plates 

 with 72 figures. This is a very full report on the 12 species and varieties of 

 springtails taken by Mr. Johansen. All the species are described and the 

 characters well illustrated. An extensive bibliography is also given. The 

 species are distributed among the following genera: Podura (1); Achorutes 

 (2, 1 n. sp.); Onychiurus (1 n. sp.); Tetracanthella (1); Isotoma (2 sp.) ; Ento- 

 mobrya (1); Lepidocyrtus (1); Sminthurides (1). 



Part B, Neuropteroid Insects, by Nathan Banks. Pp. 1-5 with 1 plate. 

 Only two orders are represented in the collection, the Plecoptera and the Tri- 

 choptera, three species of the former and four of the latter having been taken. 

 One species of each order is described as new, a Capnia and an Anabolia, but 

 other new forms may be present as the specimens are not all specifically de- 

 terminable. 



Part C. Diptera. Craneflies; by C. P. Alexander. Mosquitoes; by 

 H. G. Dyar; Diptera (excluding Tipulidae and Culicidse) ; by J. R. Malloch. 

 Pp. 1-90, with 10 plates. 



Craneflies. The collection is relatively rich in these forms, there being 

 at least 16 species represented, including one Rhyphid (a Trichocera, represented 

 by larvae only) and 15 Tipulidae. Five of these belong to the Limnobiinae, 

 embracing 4 genera, and 10 to the Tipulinae, representing 3 genera. The largest 

 genus is Tipula with 7 species. With but two exceptions the craneflies of this 

 collection all belong to new species. 



All the species, including larval forms, are fully described and figured. 



Mosquitoes. Only two species are represented among the 134 specimens 

 in the collection, both belonging to Aedes (Ochlerotatus). One of these, taken 

 in large series and also reared is described as new, A. nearcticus. The other 

 species is represented only by females and was left unnamed. 



Diptera (exclusive of Tipulidae and Culicidae) ; pp. 34-90, pis. VII-X. 

 These belong to 18 families in which they are distributed as follows: Sciaridae, 

 3 sp.; Chironomidae, 16 sp. (with a new species each in Tanypus and Diamesa) ; 

 Simuliidse, 6 sp. (In. sp. each in Prosimulium and Simulium); Leptidae, 1 sp.; 



