306 BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 



2200. EILEY, C. V. Emulsions of petroleum and 'their value as insect- 



icides. <Proc. Amer. Assoc. Adv. Sci. for 1882, 1883, v. 31, 

 pp. 469-470. Separate : <Salem, Mass., July, 1883, pp. 469-470. 

 Eeprint : <Kansas City Rev. of Science and Industry, Novem- 

 ber, 1883, v. 7, pp. 447-448. S.-b. No. 42, p. 124. Extract : 

 <Sci. Amer., 19 November, 1883, v. 49, p. 294. S.-b. No. 51, p. 

 153. 



Description of modes of making emulsions of petroleum for use against 

 insects. 



2201. [RiLEY, C. V.] The old, old question of species. <Amer. Nat., 



September [15 August], 1883, v. 17, p. 975. 



Comments upon the discussion between H. A. Hagen and W. H. Edwards ; 

 views of both parties extreme ; views as to the true nature of species. 



2202. [RiLEY, C. V.] Myrmecophila. <Amer. Nat, September [15 Au- 



gust], 1883, v. 17, pp. 975-976. 



Record of recent captures of Myrmecophila in Oregon and District of Colum- 

 bia ; record of former captures in the United States ; habits of the genus. 



2203. [RiLEY, C. V.] Salt-water insects used as food. <Amer. Nat., 



September [15 August], 1883, v. 17, pp. 976-977. 



Occurrence of Ephydra (hians ?) in Lake Tetscoco, Mexico ; E. gracilis found in 

 Great Salt Lake, Utah, and E. calif ornica in lakes in California ; account 

 by W. H. Brewer of the manner in which the last-named species is collected 

 and used for food by the Indians living near Mono Lake. 



2204. [RiLEY, C. V.] Food-plants of Samia cyntkia. <Amer. Nat., 



September [15 August], 1883, v. 17, p. 977. 



Review of paper of H. H. Birney ; list of plants on which Samia [== Attacus] 

 cynthia has hitherto been found feeding ; some of these are the favorite 

 food-plants of Callosamia [= Attaous'] promethea. 



2205. [RiLEY, C. V.] Bitten by an aphid? <Amer. Nat., September 



[15 August], 1883, v. 17, p. 977. 



Letter of S. Swan, with answer; Siphonophora [= Nectarophora] rudbeckia com- 

 mon on Solidago and Rudbeckia ; the biting was probably caused by ants or 

 some other insect that escaped notice at the time. 



2206. RILEY, C. V. Steganoptycha claypoleana. <Ainer. Nat., Sep- 



tember [15 August], 1883, v. 17, p. 978. Reprint: <Papilio, 

 September-December, 1883, v. 3, p. 191. 



Comparative description of Steganoptycha claypoleana with Proteoteras cescu- 

 lanum ; habits of the former. 



2207. R[ILEY], C. V. Extermination and restriction of Phylloxera in 



Switzerland. <Rural New-Yorker, 25 August, 1883, v. 42. 

 S.-b. No. 49, p. 74. 

 Notice of report of Valery-Mayet. 



2208. RILEY, C. V. Hackberry psyllid galls. <Ca. Ent., August [5 



September], 1883, v. 15, pp. 157-159, figs. 6, 7. 



Critical review of paper of T. W. Fyles ; Phylloxera vastatrix has many para- 

 sites and Celtis is attacked by many species of gall-insects ; characters of 

 Pachypsylla n. g. [p. 157] ; figures of galls of P. celtidis-venusta and P. 

 c.-mamma ; derivation and orthography of the generic term Celtis. 



