320 JOURNAL OF ECONOMIC ENTOMOLCKiY [Vol. 4 



86. Sharp, D., 1898. Account of the Phasmidir with Notes on the Egs«- Willey. 



Zo()l. Rcsuh.s, Cambridge, p. 75-94. 



87. V. Siebold, T., 1843. Bemorkungen iiber eine den Bacillus ro.ssii hewohnende, 



Schman)tzer-Larva\ Germar's Zeit. f. Ent. IV, p. 389-394. 



88. Sinety, R. de, 1900. Sur hi parthenogenese des Phasmes [Ortliopt.] BuH. 



Soc. ent. Fr. No. 9, p. 195-7. 

 89. 1900. La mue chez les Phasmes du genre Leptynia [Orthopt.] 



Ibid. No. 11, p. 228-9. 

 90 — - — 1901. Recherches sur \sl Biologic et 1' Anatomic des Phasmes. 



La CeUulc XIX, p. 118-278. 



91. Smith, F., 1867. [Remarks on King's (47) paper.] Jour. Proc. Ent. Soc. Lon- 



don, p. 80. 



92. Snow, G. C, 1874. Walking-Sticks or Specters becoming Injurious. N. Y. 



Weekly Tribune, 11 Nov. Sb. No. 23, p. 103. Yates Co., N. Y. 

 Reprint in: Ann. Rept. U. S. Com. Agric. 1878. Wash. p. 242. 



93. Stockard, C. R., 1908. Habits, Reactions, and Mating Instincts of the Walking- 



Stick, Aplopus mayeri. Publ. No. 103. Carnegie Inst., Wash. p. 43-59. 



94. ■ 1909. Inheritance in the Walking-Stick, Aplopus mayeri. Biol. 



Bull. XVI, p. 239-245. 



95. Thurau, F., 1899. Ber. Ent. Zeit. LXIV, Sitz. Oct. p. (15). 



96. Thomson, A., 1882. Notes on a Species of Stick Insect reared in the Insect- 



House in the Society's Garden. Proc. Zool. Soc. London, p. 718-9. 



97. — ■ 1890. Report of the Insect-House for 1889. (Orthoptera; 



Diapheromera femorata) Ibid. p. 96. 



98. Townsend, C. H. T., 1909. Descriptions of Some New Tachinida?. Ann. Ent. 



Soc. Amer. II, p. 243-250. 



99. Trouvelot, L., 1866. Proc. Bost. Soc. Nat. Hist. XI, p. 89. 



100. Wallace, A. R., 1878. Tropical Nature and other Essays, p. 91-3. 



101. Walsh, B. D., 1864. On Phvtophagic Varieties and Phytophagic Species. 



Proc. Ent. Soc. Phila. Ill, p. 409 and p. 427. 



102. Walsh, B. D., and Riley, C. V., 1868. The Stick-bug. Amer. Ent. I, p. 58. 



103. Westwood, J. O., 1839. An Introduction to the Modern Classification of 



Insects, p. 430-6. 



TWO RHOPALOSIPHUM SPECIES AND APHIS PULVERULENS, 



N. SP. 



By C. P. Gillette. 

 Rhopalosiphuni pastinaccu (L.) and R. caprece (Fab.) 



Apparently these two species have been confused by aphidologists. 

 As I have material that seems to me to straighten out the tangle, 

 I venture to give it. 



The description of pastinaca' b>^ Linneeus is satisfied about equally 

 well by the louse I am considering as this species, and by the louse 

 described by Fabricius, and later by Kaltenbach ^ as caprece. At 

 least, the species considered in this paper as pastinaca' answers the 

 Linnean description and does not answer the excellent description of 

 caprece as given by Kaltenbach. More recent descriptions seem 

 mostly to have been of caprece and under several different names. 



Rhoprilosiphum caprece Fab. Perhaps the fact that Koch - de- 



1 Monographic der Pflanzenlause, 1843, p. 109. 



2 Die Pflanzenlause Aphiden, 1857, p. 41. 



