282 
BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
2019. [Riley, C. V.] Phylloxera laws. <Amer. Nat., October [23 Sep¬ 
tember], 1S81, v. 15, p. 821. 
Summary of the existing laws regulating the traffic in plants, witli a view of 
preventing the introduction of Phylloxera vastatrix into different countries. 
2020. [Riley, C. V.] One half the vine area of France affected by Phyl¬ 
loxera. <Amer. Nat., October [23 September], 1881, v. 15, p. 
821. 
Statement that nearly one-fourth of the area of vineyards in France is de_ 
stroyed by Phylloxera vastatrix and as much more attacked ; submersion the 
only sure remedy, and the use of American resisting stocks the only avail¬ 
able preventive. 
2021. [Riley, C. V.] London purple and Paris green. <Amer. Nat., 
October [23 September], 1881, v. 15, p. 821. 
Loudon purple more than twice as efficacious and less expensive than Paris 
green as an insecticide; it needs to be well ground; composition of London 
purple. 
2022. [Riley, C. V.] Entomologist for the Pacific coast. <Ainer. Nat., 
October [23 September], 1881, v. 15, pp. 821-822. 
Notice of attempts made to have a State entomologist appointed in California. 
2023. [Riley, C. V.] Dilar in North America. <Amer. Nat., October 
[23 September], 1881, v. 15, p. 822. 
Notice of paper by R. McLachlan. 
2024. [Riley, C. V.] Locusts in Nevada. <Amer. Nat., October [23 
September], 1881, v. 15, p. 822. 
Statement from Reno [Nev. ] Journal that the countless locusts which hatched 
in western Nevada in the spring of 1881 flew toward the Sierra Nevada 
without doing any injury. 
2025. [Riley, C. Y.J Odor in butterflies. <Amer. Nat., October [23 
September], 1881, v. 15, p. 822. 
Notice of paper by Miss M. E. Murtfeldt. 
2026. Riley, C. Y. General index and supplement to the nine reports 
on the insects of Missouri. <Bull. No. 6, U .S. Ent. Commission 
[24 March], 1881,178 pp. 
Order of matter : (1) Introduction. (2) Table of contents. (3) Corrections. 
(4) Notes and additions. (5) Descriptions of new species and varieties. 
(6) List of descriptions of adolescent states. (7) List of descriptions, mostly 
amplified, of species not new. (8) List of illustrations by reports. (9) 
Classified list of illustrations. (10) General index. (11) Index to food- 
plants. 
2027. [Riley, 0. Y.] The permanent subsection of entomology at the 
recent meeting of the A. A. A. S. <Amer. Nat., 1881, v. 15, 
November [28 October], pp. 909-912; [3] December, pp. 1008- 
1011 . 
Notice of the meeting at Cincinnati, Ohio, August, 1881, with abstracts and 
notices of papers read. 
2028. Riley, C. Y. The new imported clover enemy. <Amer. Nat., 
November [28 October], 1881, v. 15, pp. 912-914. 
Occurrence and habits of Phytonomus punctalns in New York; description of 
the egg and larva of the same; food-plants of the European species of 
Phytonomus. 
