48 BULLETIN 100, IT. S. DEPARTMENT OF AGRICULTURE. 
1910. Williams, T. A. The Aphidida? of Nebraska. Nebr. Univ. Studies, v. 10 
no. 2, pp. 85-175, April, 1910. 
" Callipterus caryse Monell," p. 115. Description and note of occurrence. 
1910. Gillette, C. P. Plant-louse notes, family Aphididae (continued), pi. 24. Jour. 
Econ. Ent., v. 3, no. 4, pp. 367-371, Aug., 1910. 
"Monellia caryse," p. 367. Note of occurrence and figure. 
1910. Davis, J. J. A list of the Aphididse of Illinois, with notes on some of the 
species. Jour. Econ. Ent., v. 3, no. 5, p. 407-420, Oct., 1910. 
" Callipterus caryse Monl.," p. 417. Note of occurrence. 
Monellia caryella Fitch. 
1855. Fitch, Asa. First Report on the Noxious, Beneficial, and other Insects of 
the State of New York, Albany, 1855. 
"Aphis caryella Fitch,'' pp. 163-165. Original description. 
1856. Fitch, Asa. Third Report on the Noxious and other Insects of the State of 
New York, Albany, 1856. 
"Hickory gay-louse, Callipterus caryellus Fitch/' pp. 448-449. Short description. 
1862. Walsh, B. D. On the genera of Aphididae found in the United States. Proc. 
Ent. Soc. Phila., v. 1, pp. 294-311. 
" Callipterus caryellus Fitch," p. 302. Reference. 
1879. Thomas, Cyrus. Eighth Report of the State Entomologist on the Noxious 
and Beneficial Insects of the State of Illinois, Springfield, 1879. 
" Callipterus caryellus Fitch," pp. 170-171. Note of occurrence. 
1887. Oestlund, O. W. Synopsis of the Aphididae of Minnesota. Geol. and Nat. 
Hist. Survey Minn. Bui. 4. 
"Monellia caryella Fitch," p. 45. Genus Monellia erected. Note of occurrence. 
1910. Davis, J. J. A list of the Aphididae of Illinois, with notes on some of the spe- 
cies. Jour. Econ. Ent., v. 3, no. 5, pp. 407-420. 
"Monellia caryella Fitch," p. 419. 
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