51 



APHIDID-a;. 



Bemj. D. Walsh.— On the genera of Aphidse found in the United 

 States. <Proc. Ent. Soc. Phil., Vol. 1, 1861-'63, pp. 294-310. 



Cyrus Thomas.— Notes of the Plautlice found in the United States. 

 <Trans. 111. Hortic. Soc, 1877, pp. 137-212. 



A review of the family, including the Psyllidaj ; reproduces the descriptions 

 of earlier authors, and adds descriptions of new species. 



Cteus Thomas.— a list of the species of the tribe Aphidini, family 

 Aphides, found in the United States, which have been heretofore 

 named, with descriptions of some new species. <Illinois State 

 Laboratory of Nat. History, Bulletin No. 2, 1878, pp. 3-16. 



Ch. V. Riley and J. Monbll.— Notes on the Aphididse of the United 

 States, with descriptions of species occurring West of the Missis- 

 sippi. <Bull. U. S. Geol. and Geogr. Survey of the Terr., Vol. V, 

 No. 1, 1879, pp. 1-32, 2 pi. 



Riley gives the biology and description of several Pemphigiuse ; Monell, de- 

 scriptions, with occasional tables, of a number of Aphidin*. 



Cyrus Thomas. — Eighth Eeport of the State Entomologist on the 

 noxious and beneficial insects of the State of Illinois. Third Annual 

 Report, by Cyrus Thomas, Springfield, 1879. 



The report treats wholly on the Aphididse of the United States and is an en- 

 largement of the author's paper in the Trans. 111. Hortic. Soc, 1877. 



Geo. B. BucKTON.— Monograph of the British Aphides. 4 vols. Ray 

 Society, London, 1875-'83. 



This is the latest European work on this family, containing tables for the de- 

 termination of the genera. 



O. W. Oestlund. — Synopsis of the Aphididae of Minnesota. <Bull. 

 No. 4 Geol. and Nat. Hist. Survey of Minn., Saint Paul, 1887. 



COCCIDjE. 



V. SiGNORET. — Essai sur les Cochenilles. <Ann. Soc. Ent. de France, 

 ■ 1868-'76. 



J. H. CoMSTOCK. — Report on Scale Insects. <Annual Report of the 

 Commissioner of Agriculture for the year 1880, Washington, 1881, 

 pp. 276-349, plates. 



J. H. CoMSTOOK. — Second Eeport on Scale Insects, including a mono- 

 graph of the sub-family Diaspinae of the family Coccidse and a list, 

 with notes, of the other species of Scale Insects found in North 

 America. <Second Report of the Cornell University Experiment 

 Station, 1882-'83, Ithaca, N. T., 1883, pp. 47-143, Plates I-IV. 



