862 EXPEKIMENT STATION EECORD. 



album). ... In general the danger period extends from shortly before the 

 middle of June until well into September. The first generation of webworms 

 may be expected at its height of destructiveness during the latter half of June, 

 at a time when the beets are comparatively small and least able to resist 

 the attack." 



Blackbirds are said to be important enemies of this pest. True parasites 

 in some cases destroy fuily 50 per cent of the overwintered larvae, the braconid 

 Diosphyrus vulgaris being one of the most common. Spraying with Paris 

 green at the rate of 3 lbs. to 100 gal. of water to which either 6 lbs. of 

 whale-oil soap or 3 lbs. of lime have been added has proved to be by far 

 the most effective and satisfactory remedy. Zinc arsenite, when used at the 

 rate of 4 lbs. in 100 gal. of water and applied at the rate of 125 gal. per acre, 

 was effective but was noticeably slower than Paris green In its killing effect. 

 It is stated that the cost of labor, material, etc., for spraying sugar beets varied 

 under ordinary circumstances from $1 to $2 per acre. The spraying machinery 

 recommended for use in the work is described and illustrated. 



The natural enemies of the cotton worm, L. H. Gough (Agr. Jour. Egypt, 2 

 {1912), No. 1, pp. 1-3, pi. 1). — Calosoma imhricata, which is parasitized to a 

 very great extent during its larval stage by at least 2 parasitic flies; a Rover 

 beetle (Pcederus sp.) ; the gauze-wing fly (Chrysopa vulgaris) ; a solitary wasp 

 (Eumenes maxillosa) ; and Polistes gallica are the enemies of the Egj'ptian 

 cotton worm (Prodenia lilitra) here considered and illustrated in colors. 



Methods employed in Egypt and elsewhere to check the ravages of the 

 cotton bollworm, G. C. Dudgeon {Agr. Jour. Egypt, 1 {1911), No. 1, pp. JfO- 

 ^6). — Tbis paper relates to Earias insiilana. 



The control of the codling moth, A. L. Melandee ( Washington Sta. Popular 

 Bui. J{5, pp. 8, figs. 7). — A brief popular account. 



Notes on Tineina bred from cotton bolls, J. H. Dubrant {Bui. Ent. Re- 

 search, 3 {1912), No. 2, pp. 203-20S, figs. 3).— These notes relate to the pink 

 bollworm {Gelechia gossypiella) , Pyroderces simplex, and P. rileyi. 



Lepidoptera heterocera; family Geometridae, L. B. Peout {Genera Insec- 

 torum. 1912, No. 129, pp. 27'/, pis 5, figs. 15). — The subfamily Hemitheina* is 

 here dealt with. 



New Culicidae, F. V. Theobald (A'Ofrt; Culicidce. Wye, England, 1911, pt. 1, 

 pp. 35, figs. 21). — This first part gives descriptions of Culicidne from Uganda, 13 

 species being described as new to science. 



The role of the house fly and certain other insects in the spread of human 

 diseases, W. E. Britton {Pop. Sci. Mo., 81 {1912), No. 1, pp. 36-49, figs. 5).— 

 An address delivered by the author. 



Fruit fly control, W. M. Giffard {Hawaii. Forester and Agr., 9 {1912), No. 5, 

 pp. 166-170). — This paper adds Chrysophyllum oliviforme and Thevetia nerifolia 

 to the long list of fruits or seeds infested by the Mediterranean fruit fly. 



The petroleum fly in California (Psilopa petrolei), D. L. Ceawfobd {Pomona 

 Col. Jour. Ent., 4 {1912), No. 2, »p. 687-697, fig. 1).—A discussion of the habits 

 of this insect and of the structure of the larva. 



Blood-sucking Diptera in Venezuela, J. M. R. Suecoxif and R. Gonzalez- 

 RiNCONEs {Essai sur les Diptdres Vuln6rants du Venezuela. Paris, 1911, pt. 1, 

 pp. V+320, figs. 65).— This first part of the work deals with the blood-sucking 

 Kematocera. 



Blood-sucking Diptera actually known from Venezuela, J. Surcouf and 

 R. GoNZALEZ-RiNCONES {Arcli. Par., 15 {1912), No. 2, pp. 248-314, figs. 43).— 

 This paper relates to the studies noted above. 



The Siphanoptera of Lima and Callao, E. D. Tovar y R {Bol. Dir. Fomenio 

 [Peru], 9 {1911), No. 11, pp. 16-37). — This is a general discussion of the fleas 

 which occur in Peru. 



