382 



Jones (W. W.). Notes on Orchestes rufipes. — J I. Econ. Ent., Geneva, 

 N.Y., XV, no. 2, April 1922. pp. 179-180. 



Rhynchaenus {Orchestes) rufvpes, Lee, is apparently increasing in 

 Utah, where it is recorded from Salix spp., Popiilus angustifolia and 

 Betula fontinalis [cf. R.A.E., A, x, 114]. 



Van Dyke (E. C). Destructive Bark-beetles in the Monterey Pine 



Forests.- — Jl. Econ. Ent., Geneva, N.Y., xv, no. 2, April 1922, 

 p. 180. 



Bark-beetles have been able to develop to an enormous extent in 

 California, owing to felled timber being allowed to remain in the forests. 

 Ips plastographus, Lee, and /. radiatae, Hopk., are responsible for 

 most of the damage done, but Dendroctonus valens, Lee, and 

 Pityophthorus sp. also cause some injury. 



EssiG (E. O.). Mealy Bug Control on Pear Trees. — Jl. Econ. Ent., 

 Geneva, N.Y., xv, no. 2, April 1922, pp. 181-182. 



A mixture of 40 lb. whale oil soap, 5 U.S. gals, crude carbolic acid 

 (25 per cent.), 10 U.S. gals, distillate emulsion (28 Be.) and water to 

 make up to 50 U.S. gals., has been used against Pseiidococcus maritimus , 

 Ehrh., on pear trees. This mixture is no more effective than miscible 

 oil, but when prepared at home is very much cheaper. It should be 

 used at a strength of one to twenty parts of water. The loose bark on 

 the trunks and bases of the main limbs should be scraped away before 

 treatment. In cases of serious infestation three apphcations were made 

 during January and February. 



Macdougall (R. S.). Insect and Arachnid Pests oJ 1919.^ — Separate 

 from Trans. Highland & Agric. Soc, Scotland, 1920, 42 pp., 

 50 figs. [Received 24th May 1922.] 



The pests recorded are a species of Chermes, probably C. cooleyi, 

 Megastigmus spermatrophiis and Pityogenes hidentatus on Douglas fir ; 

 Tortrix viridana (oak leaf tortrix) ; Ips [Tomicus) acuminatiis (six- 

 toothed pine beetle) ; Anthonomus rnhi attacking raspberry, bramble, 

 strawberry, plum and rose ; Lepidosaphes ulmi, against which winter 

 washes are advocated ; Cheiniatohia brumata, Hyhemia defoliaria and 

 Anisopteryx aescularia, causing great damage to foliage of many 

 different trees ; Eriophyes pyri (pear-leaf blister mite) ; Blennocampa 

 piisilla (leaf-rolling sawfly), which may be destroyed by hand-picking 

 on wild and cultivated roses ; the Elaterids, Agriotes ohscurus, A . 

 lineatiis, A. sputator and Athous haemorrhoidalis ; Hylemyia antiqiia 

 {Phorbia cepetorum) (onion fly), particularly injurious to spring-sown 

 onions ; Melolontha melolontha {vidgaris) ; Lucaniis cerviis ; Sino- 

 dendron cylindricum ; Tylenchns dipsaci (devastatrix) , injuring various 

 field crops ; Macrosiphum granarium (grain aphis) and Phora sp. on 

 oats ; and Myzus persicae {Rhopalosiphnm dianthi) (turnip aphis) and 

 Brevicoryne [Aphis) brassicae (cabbage aphis), which were particularly 

 abundant during 1919. 



The beneficial insects included Clems formicarius, feeding on 

 Scolytids, Myelophilus spp. and Hylastes spp. 



