1919] ECOIS^OMIG ZOOLOGY ENTOMOLOGY. 255 



billed spray is better, for it will kill a sreuter pereentage of eggs antl all tbe 

 nyuiphs. Tlie time of application is important." 



Tlie best results can be obtained " by delaying the dormant spray until the 

 fruit buds start to swell and when they first show green. At this stage the 

 eggs of the oat aphis (A. avenw) will be hatching, while the eggs of the rosy 

 aphis {A. sorbi) and the green apple aphis (A. poini) will not hutch for 7 to 

 14 days later. The dormant spray will not injure swollen fruit buds or those 

 showing short projecting tips of leaves, while a dormant spray applied whoa 

 the leaves are distinct and separated will burn the foliage of most varieties. 

 Also, the recently emerged nymphs of the aphids will conceal themselves to a 

 large extent between the separated leaves, and it will be impossible to hit all 

 of them with a contact spray." 



Vegetable plant lice, T. J. Headlee, {New Jersey Stas. Circ. 107 {1910), pp. 

 3-21, fiffs-. 16). — This is a popular summary of information on the more im- 

 portant aphid enemies of vegetal)les in New Jersey. Of the 94 species recognized 

 as affecting various plants within the limits of the State 12 are known as ene- 

 mies of vegetable crops of which 7, known to be seriously and at times severely 

 injurious, are here considered, namely, the pink and green aphis of the potato 

 {Macrosipkum soIanifolU), the green peach aphis, the green pea louse (M. pisi), 

 the bean louse (ApMs rtimicis), the cabbage aphis, the false cabbage aphis 

 (A. psudobrasskw), and the melon aphis. 



Control of plant lice or aphis, F. H. Chittenden {Potato Mag., 1 {1919), No. 

 11, pp. 10, flffs. 3). — A l)rief discussion of the phmt lice that attack the potato, 

 in which it is pointed out that the spinach aphis is commoner and more impor- 

 tant than the pink and green aphid. The author recommends the use of nicotin 

 sulphate (40 per cent) § pint, laundry or lish-oil soap 2 lbs., and water 50 gal. 



A Melapliis from moss, A. C. Baker {Erd. News, 30 {1019), No. 7, pp. 10.',- 

 106, flii. 1). — A species reared from moss found infested with an aphid at 

 Si)ringiield, W. Va., is described as 21 da phis minntiis n. sp. 



The identity of Smynthurodes betse Westwood, A. C. Baker {Proc. Eiii. 

 Hoc. Wash., 21 {1919), No. 2, pp. 36-38, fig. i).— The author concludes that 

 S. hctie, described by Westwood in 1849, is distinct from our American beet 

 aphid and that it should be known as Forda hetce. . 



An undescribed species of Dryopea injurious to Phyllostachys, A., C. Baker 

 {Proc. Ent. Soc. Wash., 21 {1919), No. 5, pp. lO/f-106, fig. i).— A plant louse 

 found to attack the roots of Phyllostachys at Yarrow, Md., is desci'ibcd as 

 Dryopea morrisoni n. sp. 



A report on a collection of CoccidEe from Argentina, ■with, descriptions of 

 apparently new species, H. Morrison {Proc. Ent. Soc. Wa>ili., 21 {1010), No. 

 4, pp. 63-01, pis. Jf). — Twenty-one species of Coccidse are here recorded from 

 Argentina, of which 7 are described as new. 



Studies on the dry cleaning process as a means of destroying body lice, 

 R. H. Hutchison and W. D. Pierce (Proc. Ent. Soc. Wash., 21 {1919), No. 1, pp. 

 8-20). — "The open rotary washer system of dry cleaning, when done accord- 

 ing to the specifications quoted, is entirely effective in destroying both the ac- 

 tive stages and the egg^ of body lice and has additional advantages in the 

 cleansing of the garments and absence of shrinkage. The high temperature re- 

 quired in the drying tinnbler was found to be essential for the destruction of 

 the eggs. The wash and rinse in gasoline are effective in destroying active 

 stages but a large percentage of the eggs will survive this part of the process. 

 Gasoline itself is of no value as an ovicide; 18.7 per cent of the eggs in one test 

 hatched after 54 hours' immersion in gasoline. 



