ECONOMIC ZOOLOGY ENTOMOLOGY. 1051 



Notes on the life history of Nonagria oblonga, W. ]{. AValton (Ent. Xetm, 

 m (1908), No. 7, pp. 2!)5-29i), pi. i).— Infestation by this moth in 75 per cent of 

 the stalks of the common cat-tail rush {Typha sp.) is reported as having been 

 found near Ilarrisburg, Pa. The tachinid (Masicera myoidcea) has been reared 

 from the larvte. 



A bit of contemporary histoi-y, Annie T. Slosson (Caund. Eut., J/O (1908), 

 No. ?', pp. 213-219, pi. I, flys. ,i). — A description is given of I y not us aniyniaticus. 

 This species has been recognized as a pest among the collections of the public 

 luusi'um in Milwaukee. Wis. 



Miscellaneous papers. Biological studies on three species of Aphididae, 

 .7. J. Davis (U. S. Drpf. Ayr., Bur. Ent. Bui. 12, tech. sen, pt. 8, pp. 123-168, 

 /iy>i. .'/). — The author here rei)orts studies made of the biology of the corn root- 

 aphis, corn leaf-aphis (Aitliis ntaiilis), and sorghum aphis (Sipha [Chaito- 

 liltnru-s] ftava). Technical descrii)tions are given of the different forms in their 

 various stages and- a complete bibliography of each species is appended. 



Notes and descriptions of some orchard plant lice of the family Aphididae, 

 C. P. (iiLLKTTE {.Jour. EiDit. Eiit.. 1 (1908), Ao.s-. ,;. ;;/). 302-310. pis. 2; 6", pp. 359- 

 369, pis. 2). — In this paper, which is supplemental to Bulletin 133 of the Colo- 

 rado Station previously noted ( E. S. R., 20, p. 854), the author describes the 

 various stages and habits of Schizoneiira laniyera. Aphis pomi, A. persicw-niger, 

 A. bakeri, Myzus persicce, and M. cerasi. Hippodamia convcrycns is said to be 

 I he most abundant destroyer of the woolly aphis in Colorado. Various other 

 lady beetles are mentioned as feeding upon, and Apheliiius nirill as having been 

 (il)served ovipositing in, the woolly aphis. 



The army worm at Durham, North Carolina, Z. P. Metcalf (Jour. Econ. 

 Ent., 1 (1908), Xo. 6, pp. 3'jJi, .i.jj). — The author reiiorts the occurrence of Hrli- 

 (iphihi uniptcncta in August, 190S. In order to determine the percentage of 

 infestation by tachinid ilies {Winthemia quadripustulata), 491 larvre were col- 

 lected and observed. Of these 442, or 90 per cent, were infested with eggs of 

 the parasite. Only 7 adult moths emerged, showing a total mortality of 9S.6 

 per cent. The 442 infested larvie yielded 709 parasitic puparia from which 556 

 adult flies emerged. 



Experiments for the control of the red spider in Florida (Tetranychus 

 bimaculatus), IL M. Russell (Jour. Econ. Ent., 1 ( 1908), Xo. 6, pp. 377-380).— 

 'I'lie red sjuder was the source of considerable injury to truck, general crops, and 

 citrus trees in Florida during the si)ring of 1908. Experiments made with lime 

 sulphur, Ij'e sulphur, sulphur, and kerosene emulsion, here reported, show that 

 llie pest can b© controlled by spraying with any one of the four insecticides. 



Notes on the grass mite, Pediculopsis graminum, II. E. IIoijgkiss (Jour. 

 Econ. Ent.. 1 (1908), Xo. 6, pp. .;7.7-.i77). — A brief account of the distribution 

 of this mite and the injury which it jfroduces. The condition known in grass as 

 "silver lop" is said to bo the result of the attack upon thi' stem by this pest. 

 .V iiarasitic fungus ( Sporotrichunt poa) is said to gain entrance into the stems 

 of gniss and buds of carnations with or following the entrance of this mite. 



Dimples in apples from oviposition of Lygus pratensis, E. P. Taylor (Jour. 

 Econ. Ent., 1 ( 190S), Xo. 6, pp. 370-37.1, ids. ^^ ) .— The author has found that an 

 injury to apples resembling that of the plum and apple curculio is due to egg 

 punctures made in the very early development of the ai)ple by the conunon 

 tarnished plant hug. Many peach blo.ssoms were also observed late in March 

 which had api)arently been blasted as a result of their having been fe<l upon 

 by this insect. Out of 110 apples |ticked from Rlue Pearmaln trees on April 10, 

 45. or 40 per cent bore egg i»unctures. No freshly laid eggs were found after 

 the apples were more than one-third of an inch in diameter. The eggs were 



