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260 



Blackman (M. W.). Notes on Forest Insects, iii. Two New Species 



of Pitiiophthorus from Colorado. — Psyche, Boston, Mass., xxvii, 

 no. 1, February 1920, pp. 1-5, 1 plate, 1 fig. 



This paper describes Pityophthorus occidentalis, sp. n., and 

 P. hassetli, sp. n., from Picea engelmanni in Colorado. The latter 

 bark-beetle will also breed in Abies balsamea, and from laboratory 

 observations there is apparently only one generation in a year. In 

 the Engelman spruce the larvae work almost entirely in the inner 

 and middle bark, usually not even grooving the sap-wood, while in 

 A. balsamea the mines are partly excavated from the sap-wood. The 

 nuptial chamber generally occurs at the junction of bark and sap- 

 wood, and from this a number of egg-galleries, generally from four to 

 nine, branch off on all sides, taking a longitudinal direction. 

 Egg-niches occur on both sides of the gallery, and are not closely 

 arranged, indicating that the number of eggs laid by each female is 

 not great. 



Lallemand (V.). Un Membracide (Hem.) nouveau pour la Faune 



francaise. — Bull. Soc. Entom. France, Paris, 1920, no. 3, 11th 

 February 1920, p. 53. 



The capture is recorded of individuals of Ceresa bubalus, F., in 

 Herault in September 1918, on Equisetum, among which were young 

 vine stems. This Membracid is widely distributed in the United 

 States, especially in the east, and it is possible that it was imported 

 into Europe with young vine plants, though it has not previously 

 been recorded in this continent. 



LiCHTENSTEiN (J. L.) & PiCARD (F.). Note suF Ics Proctotrypldcs 

 (Hym.). — Bull. Soc. Entom. France, Paris, 1920, 11th February 

 1920, pp. 54-55. 



Among the Proctotrupids dealt with are Trichopria {C ephalonomia) 

 hypobori, KiefE., known as a parasite of Hypoborus Jicus, Er. At 

 Montpellier this insect commonly infests several Scolytids, such as 

 Scolytus rugulosus, Ratz., in plums, /S. amygdali, Guer., in cherry-laurel, 

 and Phloeosinus tkuyae, Perris, in cypress, 



PiUTTi (A.). Sur I'Action de la Chloropicrine sur les Parasites du Ble 

 et sur les Rats. — C. R. Hebdom. Acad. Sci. Paris, clxx, no. 14, 

 6th April 1920, pp. 854-856. 



The author summarises the results of his experiments with 

 chloropicrin. As regards the action of this substance on insects 

 infesting grain, such as the beetles, Calandra granaria, Tenebroides 

 mauritanicus, Tribolium castanewm (Laemophloeus ferrugineus), and 

 Lepidopterous larvae such as Sitotroga cerealella, Tinea granella and 

 Plodia americana, if the chloropicrin acts on the grain for about a 

 week (20 cc. per cubic metre at a temperature of about 15°-20° 

 [59°- 68° F.] being used) excellent results are obtained. Neither the 

 flour nor the bread made from such grain deteriorates in any degree 

 so far as its nutritive value is concerned, although the grain 



