52 EXPERIMENT STATION RECORD. 



that although these methods may temporarily check the inroads of the wood- 

 boring insects, they will not keep the insects out of the poles. In inspections 

 made at Warren, Pa., and at Falconer, N. Y., of similar test lines treated by 

 the creosote open tank method of impregnation and brush treatments of creosote, 

 wood creosote, creolin, 2 different carbolineum preservatives, and tar, and which 

 have been set in the ground for a period of 5 years, it was found that with the 

 exception of the brush treatments with creolin and tar all were efficient in 

 preventing the attacks of wood-boring insects. 



" Methods of treating poles superficially by brushing with various preserva- 

 tives have proved to be temporarily efficient in keeping wood-boring insects out, 

 if the work is thoroughly done and not only the butt, but also the base, is 

 treated. ... It is evident that impregnating the poles with creosote by some 

 standard process (either the open-tank or the cylinder pressure processes) will 

 keep wood-boring insects out and preserve the poles for a much longer period 

 than they would last untreated." 



Brief notes are presented on the common injury to poles by associated wood- 

 boring insects, including white ants (Termes flavipes), the most common source 

 of injury; a giant round-headed borer {Prionus sp.) sometimes found in poles, 

 usually in association with the chestnut telephone pole borer ; a large scarabseid 

 (Polymocchns 'brevvpes), previously found in decayed oak railroad ties, which 

 cjiuses the poles to break off sooner than they othei-wise would ; a flat-headed 

 borer {Bupresiis ruflpes) ; wireworms (Alans sp.) ; a large black carpenter ant 

 ( Camponotus pennsylvanicus) ; and a small black ant ( Crcmastogaster lineolata). 



A list of some available publications on wood preservation is appended. 



Damag'e to telephone and telegraph poles by wood-boring' insects, T. E. 

 Snyder (U. S. Dept. Agr., Bur. Ent. Circ. 13^, pp. 6, figs. 3). — This circular 

 consists of revised extracts from Bulletin 94, part 1, noted above. 



Studies in the life histories of Australian Odonata, R. J. Tillyaed {Proc. 

 Linn. Soc. N. S. Wales, 3^ (1909), pt. J,, pp. 697-708, pi. 1, fig. 1).—In this third 

 paper (see E. S. R., 22, p. 356) notes are presented on the new species Phyllope- 

 talia patricia. 



An investig-ation of the locust pest in the Philippines, D, B. Mackie 

 (riiiUppme Agr. Rev. [English Ed.], 3 (1910), No. J,, pp. 227-2^0).— Aa account 

 of the life history, natural enemies, and methods of destroying locusts. 



The African migratory locusts, "W. La Baume (Tropenpflanzer, Beihefte, 

 11 (1910), No. 2, pp. 65-128, pis. Jf, figs. 10).— Fart 1 of this paper takes up 

 briefly the general classification, geographical distribution, biology, natural 

 enemies, and methods of combating locusts ; part 2 is devoted to a more detailed 

 account of six species. 



Notes on some new and rare Thysanoptera (Terebrantia), with a prelimi- 

 nary list of the known British species, R. S. Bagnall (Jour. Econ. Biol., 6 

 (1911), No. 1, pp. 1-11). — This paper presents notes on 9 species representing 

 6 genera, of which 5 species and 1 genus (Amblythrips) are described as new. 

 The list presented includes 74 species, representing 29 genera, known to occur 

 in the British Isles. 



West African Hemiptera injurious to cocoa, G. C. Dudgeon (Bui. Ent. Re- 

 search, 1 (1910), No. 3, p. 177). — Sahlbergella singnlaris, a species nearly allied 

 to the bark-sapper (S. theobroma), is reported to have been found badly infest- 

 ing cocoa plantations in Bompata, Ashanti. 



On the presence in Dahomey and method of transmission of Leptomonas 

 davidi, a flagellate parasite of the Euphorbiaceae, G. Bouet and E. Roxtbattd 

 (Convpt. Rend. Soc. Biol. [Paris], 70 (1911), No 2, pp. 55-57, figs. 12).— The 

 authors have found L. davidi in the latex of Euphorbia pilnlifera in Dahomey 

 but not in several other species examined. They do not think it to be pathogenic 



