527 



and distribution of this scale in the United States is discussed with its 

 life-history as observed in Wisconsin. A Chalcid, Holcencyrtus 

 2)hysokermis, Gir., a recently described species apparently introduced 

 ^vith it from Europe, is effective in checking its spread ; Chiloneurus 

 albicornis, How., and several Encyrtids have also been bred from it. 



Chamberlin (W. J.). An Annotated List of the Scolytid Beetles of 

 Oregon. — Canadian Entomolorjist, London, Out., xlix, no. 9, 

 September 1917, pp. 321-328. 



The species dealt with in this paper include Crypludus amahilis, 

 sp. n., which is described from specimens taken in Oregon in Abies 

 amahilis. The beetles enter the trunk just below the branches and 

 eat out a small chamber in which the eggs are deposited during the 

 last week in August. These hatch in five days, the larvae working out 

 in all directions and girdling the small limbs. The pupal cells are 

 found in the cambium. C. grandis, sp. n., is described from Oregon 

 in Abies grandis. Dendroctonus monticolae, Hopk., has caused heavy 

 losses among various species of Pinus throughout Oregon. D. engel- 

 manni, Hopk., has not previously been recorded from Oregon ; two 

 specimens were collected from their characteristic mines under the 

 bark of Picea engelmanni. D. brevicomis, Lee, is the most serious 

 pest of pine in the State, destroying many of the finest examples of 

 yellow pine (P. ponderosa). Scohjtus {Eccoj^togaster) unispinosus, Lee, 

 is widely distributed in the State, and attacks larch {Larix occidentalis), 

 Douglas fir {Pseudotsuga taxifolia) and Engelmann spruce {Picea 

 engehnanni). It was recently bred from thick bark taken from near 

 the base of a large tree, where the species evidently spent its full life- 

 cycle, never reaching the cambium. A new species resembling 

 S. imispinosus has been taken from the twigs of a dying fir {Abies 

 gratidis). S. {E.) subscaber, Lee, is found throughout the State, the 

 favourite host being A. grandis, some examples of which are so heavily 

 infested that not one square inch is free from mines. A large number 

 of less important species are also dealt with in this paper. 



Smith (L. B ). Control of Some Garden Insects. — Virginia Truck 

 Expt. Sta., Norfolk, Bull. no. 23, 1st April 1917, pp. 489-506, 

 9 figs. [Received 28th Sej^tember 1917.] 



This bulletin has been compiled for the information of vegetable 

 growers in Eastern Virginia, only those insects occurring in that 

 region being included and the methods of control recommended being 

 applicable to local conditions. Some general directions for insect 

 control are given, spraying outfits being described and illustrated. 



Potato pests include Leptinotarsa decemlineata. Say (Colorado potato 

 beetle), against which powdered arsenate of lead used alone, or 1 lb. 

 Paris green to 20 lb. air-slaked hme on the shoots as soon as they 

 appear, are recommended. This should give protection until the 

 plants are large enough to spray, when a mixture of 4 lb. arsenate of 

 lead paste, 1 lb. Paris green and 50 U.S. gals. Bordeaux mixture 

 4 : 6 : 50 is advocated for application once before the eggs hatch and 

 then once weekly until the early crop is harvested. Epitrix sj)p. (flea 

 beetles) sometimes attack potato plants and eat small, round holes in 

 the fohage. Bordeaux mixture, when used as a medium for applying 



