650 EXPERIMENT STATION RECORD. [Vol 40 



winged migrants of which have been reared at the Colorado Experiment Sta- 

 tion for several years past, namely, Forda formicaria from Melica bnlbosa, 

 Poa pratensis, Phleum alpinum, and Ely mux sp., and F. olivacea from Hor- 

 deum sp. 



The Aphididae of Lahore, Bashambar Das (Mem. Indian Mus., 6 (1918), No. 

 4, pp. 135-274, figs. 4; abs. in Rev. Appl. Ent., Ser. A, 6 (1918), No. 11. p. -}?3).— 

 This is a monograph of the Aphididae of Lahore, in which 38 forms are recog- 

 nized of which 13 species are described as new. Four genera are erected, 

 namely, Stephensonia for a new species; Brevkoryne for Aphis brassier, A. 

 chenopodii, and another species; Brachyunguis for three new species; and Shiv- 

 aphis for a new species. A host plant list arranged in alphabetical order, with 

 the dates of occurrence of the aphids thereon, is appended (pp. 268-274). The 

 plates have not been issued with the text but are to appear later. 



The work is edited, with notes and an Introduction, by P. van der Goot. 



New economic pests of red clover, A. C. B nun ll (Jour. Boon. Ent.. 11 

 (1918), No. 5, pp. .'iZl-.'i2' h pi. 1). — A brief account is first given of the third 

 successive outbreak of the red clover aphis (Aphis bakeri), which occurred in 

 Idaho in 1916. An account of this post by the author has been previously 

 noted (E. S. B., 40, p. 360). The natural enemies of the aphis mentioned in- 

 clude several coccinellids, a bymenopterouB parasite recently described by 

 Howard (E. S. R., 37, p. 700) as Aplulinus Inpisligni, the western dark Triph- 

 leps (T. tristioolor) , etc. 



Thrips injuring peaches, R. 11. I'kttit (-lour. Econ, Ent.. 11 {1918), No. 5, 

 pp. 434, 435. fig. 1). — The author records the injury to peaches in the vicinity 

 of Benton Harbor, Mich., by the flower thrips [Euthrips tritici) during the last 

 five or six years. The injury consisted of shallow, gummed scars on the fruit, 

 little more than skin deep — an injury that does nol Interfere with the quality to 

 any extent, but which places wli.it would otherwise be a fancy peach in the 

 second class or lower because of Its appearance. The damage appears to be dour 

 before the pits begin to harden, and since this takes place before thinning begins 

 it is possible to eliminate many of the blemished fruits during thinning. The 

 author has since observed similarly blemished fruit in various stores in other 

 parts of the State where peaches were offered for sale. 



Hemolysin (aphidolysin) in plant lice, J. Dewitz {/.<><> 1. \>i:., 50 (1918), No. 

 8, pp. .,.',- .',6). — In further Investigations of the cabbage aphis (Brevicoryne 

 [Aphis] bnWMCCP, 1 it was found that desiccated plant lice retain the hemolytic 

 action for a period of five months and that this action Is nor destroyed by boil- 

 ing for 15 minutes. The desiccated alcoholic precipitate from the aphid extract 

 dissolved in sodium bicarbonate, both boiled and not boiled, retained its hemo- 

 lytic action. 



The grape mealy bug (Pseudococcus bakeri). R. L. NotJOABSI 1 I/O. Bui. Cat. 

 Com. Hnrt.. 7 (IMS). No. 9, pp. 511-514. figs. 3). — This is a brief account of in- 

 vestigations, by the Bureau of Entomology of the U, S. Department of Agricul- 

 ture, of P. baken, a mealy bug commonly found on grapes in Fresno and Kings 

 Counties and to a lesser extent in Tulare County, Cal. It is not particularly 

 adapted to the grape but thrives well on a number of plants, including citrus 

 trees, pear, walnut, some ornamental plants grown in the open air as well as in 

 hothouses, certain species of bulbs, and on roots when exposed above ground. 

 The damage consists in a depreciation of the market value of the grapes due to 

 the filthy condition of the bunches in which the insect is present. Cut little or 

 no injury is caused to the vine itself nor does the development of the grapes 

 appear to be affected. 



»Zool. Anz., 48 (1017 1. pp. 380-306. 



