73 



moth are white oak {Q. lohata), willow {Salix lasiolepis) and probably 

 Cottonwood {Popiilus trichocarpa). It has not been found in black 

 locust {Robinia), which was the original food-plant recorded from 

 the Eastern States. The life-c^^cle occupies at least three years and 

 probably more. 



The various suggestions made for the control of the pest are 

 reviewed. The present observations indicate the use of a cage 

 surrounding the main trunk as the most satisfactory method of 

 eradicating P. robiniae from infested trees. The cage used in these 

 experiments, which was 10 feet high, is described. The moths 

 emerging into the cage should be collected and destroyed at least 

 once a day. As trees that have once been infested remain attractive 

 for some time, they should be caged for several years after all moths 

 have emerged from the trunk. 



DE Ong (E. R.). a New Almond Apliid. — //. Econ. Ent., Geneva, 

 N.Y., xiv, no. 4, August 1921, p. 373. [Received 5th December 

 1921.] 



Rhopalosiphum nyniphaeae, L., is recorded as attacking almonds 

 in California, apparently for the first time. Liquid appUcations of 

 nicotine sulphate 1 in 1,000, with the addition of soap, have proved 

 most effective against this Aphid. 



HoLLowAY (T. E.). Camphor Scale in New Orleans. — //. Econ. Ent., 

 Geneva, N.Y., xiv, no. 4, August 1921, p. 373. [Received 

 5th December 1921.] 



Camphor is apparently the preferred food-plant of Psetidaonidia 

 duplex, though this scale also occurs on Ligustnim, rose, Citrus, fig 

 and sweet olive. It is doing much damage to camphor in New Orleans, 

 and badly infested trees are being cut down. 



Morrill (A. W.). Cotton Boll Weevils. — //. Econ. Ent., Geneva, 

 N.Y., xiv, no. 4, August 1921, pp. 373-374. [Received 5th 

 December 1921.] 



A series of cotton boll weevils collected on the West Coast of Mexico 

 include Anthonomus grandis and A. grandis thiirberiae, as well as 

 numerous hybrids between them and races of them. Bolls are 

 apparently preferred to squares for oviposition. 



Green (E. E.). On a New Genus of Coeeidae from the Indian Region. 



— Ann. & Mag. Nat. Hist., London, viii, no. 48, December 1921, 

 pp. 639-644, 3 figs. 



The Coccids described are Cribrolecaniumformicarum, gen. et sp. n., 

 from Ceylon, in hollow branches of Stereospermtmi chelonioides, and 

 C. radicicola, sp. n., from Coimbatore, India, on roots of Cassia sp. 



Laing (F.). Note on Aleyrodes proleteUa, L. — Ent. Mthly. Mag., 

 London, Ivii, 3rd Ser. vii, no. 84, December 1921, pp. 275-276. 



During the autumn of 1921 .Heurodes proleteUa, L. (cabbage white- 

 fly) was particularly abundant in Southern England. The food-plants 

 include Brassica and Chelidonium majus. Hand-picking and burning 

 infested leaves is probably the best means of dealing with this pest. 

 The author is not satisfied that this species and A. brassicae, Wlk., 

 are really distinct. 



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