850 EXPERIMENT STATION RECORD. 



" The only treatment that can be suggestetl is a spray of soft soap and nico- 

 tin, or possibly soft soap and quassia, bnt success will depend on a nice estima- 

 tion of the exact time to apply the wash, and the thoroughness with which the 

 application is made." 



The life history and habits of the pear thrips in California, S. W. Foster 

 and r. R. Jones (11. .S'. De}tt. Agr. Hid. J73 {I'Jir,), pp. .j^, pis. 5, figs. IJ,).— 

 This is a detailed account of (Euthrips) Tccniothrips pyri. based in part on 

 studies previously noterl (E. S. R., 24. p. 455). The subject is dealt with under 

 the headings of the history, economic importance, character of injury, descrip- 

 tion, .systematic position, anatomy, life history and habits, and natural enemies. 



The San Jose scale and its control, A. L. Quaintance (TJ. 8. Dept. Agr.. 

 Farmers' Bui. 650 {1915), pp. 27. figs. 17). — This is a revision of Circular 124 of 

 Ihe Bureau of Entomology, previously note<l (E. S. R., 23. p. fiCl). 



The San Jose scale insect (Aspidiotus perniciosus), A. L. Melandeb (AVrixJi- 

 ington t^ta. PnpuJar Bill. 78 (1915). pp. 7. figs. 3). — A popular account. 



Monograph of the bombycine moths of North America, including' their 

 transformations and orig'in of the larval markings and armature, II and 

 III, A. S. Packard (Mem. Nat. Acad. Set., 9 (1905), pp. 272, pis. 61, figs. 19; 

 12 (1914), Pt- i, PP- 1^+516, pis. 113, figs. 3^).— Part 2 of this work (E. S. R.. 

 8, p. 147) deals with the subfamily Ceratocampinse. Before taking up the classi- 

 fication and life histories of the subfamily, which form the major part of the 

 work, the author discusses such phases as coloration and protective attitudes 

 of the Notodontida?. the larval armature of the Ceratocampinfe, the caudal horn 

 of the Ceratocampidse, protective armature both in shajie and color and defen- 

 sive movements, coloration in the larvre, dichromatism or color variation in the 

 larva, the life history of Ccratomia amynior, phylogeny of this subfamily, 

 phylogeny of the Sphingidfe, origin of the Syssphingina and also the Symbom- 

 bycina from the Notodontid?e, geographical distribution of the subfamily, etc. 

 IVenty-three plates in color illustrate the larval and adult stages of the 

 species. 



The third part of the work deals with the familie.? Cera toon ra pi da^ (exclusive 

 of the Ceratocampinse), Saturniidfe (including hybrids). Hemileucidse, and 

 Brahnifeidje. A list of parasites of the siieeies of these families is included. 

 This third part, largely in manuscript form at the time of the authors death, 

 has been edited by T. D. A. Cockerell. Thirty-four colored plates illustrate 

 the larval stages of the species considered. 



A new phycitid injurious to pine, H. G. Dyar (Insecutor Insciticr Menstruus, 

 2 (1914), No. 7, p. 112). — Pwipestis erythropasa, reared from cones of Pintis 

 chihiialniana in the Chiricahua National Forest. Arizona, is described as new to 

 science. 



The caterpillars attacking the oaks of Richmond Park, with an account 

 of an experimental spraying with lead chromate. R. H. DF:AKm (Ann. Appl. 

 Biol.. 1 (1914), No. 1, pp. 77-84. P'-**- 6). — ^This paper gives a detailed account 

 of the work previously noted from another source (E. S. R.. 31, p. 60). 



The two commonest caterpillars were a leaf roller, Tortrix riridana, and the 

 winter moth (Cltciivatohia hruniata). The spray used was made from a paste 

 of the following composition : Lead chromate 50 per cent, soft soap 25 per cent, 

 gelatin 1.5 per cent, and water 23.5 per cent. One lb. of the paste was used to 

 about 30 gal. of water, thus giving 1 lb. of lead chromate to every GO gal. of 

 spray. Caterpillars fed on sprayed foliage either died at once or became starved 

 and finally perished, so that no doubt remains as to the efRcacy of the poison. 



Control of the gipsy moth, W. C. O'Kane (X. H. Dcpt. Agr.. State Moth 

 Work Cire. 5 (1915), pp. 4). — A popular account. 



