BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
250 
1769 Riley, 0. Y.—Continued. 
tory and refutation of the annual immigration theory; division of the 
cotton belt into regions wherein, respectively, A. argillacea [ =xylina] is 
permanent and temporary ; food-habits and enemies of the same. 
1770. [Riley, C.V.] The migrations of butterflies. <Amer.Ent., April, 
1880 [v. 3], n. s., v. 1, pp. 100-102, figs. 34-35. 
Migratory flights of Lepidoptera supposed to be due to excessive multiplica¬ 
tion of individuals and to a true migratory instinct; direct ons, times, and 
extent of migrations of Danais archippus ; explanation of the migratory 
instinct; distribution of D. archippus and Pyrameis cardui ; figures the 
former and its manner of clustering. 
1771. [Riley, C. V.] Gouty gall on blackberry and raspberry canes. 
<Amer. Ent., April, 1880 [v. 3], n. s., v. 1, p. 107. 
Answer to letters of P. S., T. A. C., and J. W.; seasons, ravages of and means 
against Agrilus ruficollis. 
1772. [Riley, C. V.] Sowing cotton seeds in hot-beds and transplanting 
as a means of preventing injury from the cotton-worm. <Amer. 
Ent., April, 1883 [v. 3], n. s., v. 1, p. 107. 
Impracticability of W. J. W.’s suggestion as indicated in title. 
1773. [Riley, C. V.] Not the cotton-moth. <Amer. Ent., April, 1880 
[v. 3], n. s., v. 1, p. 107. 
Answer to inquiry of D. B. Woodbury; food-plants of Tolype velleda. 
1774. [Riley, C. V.] Moths caught in Alabama : Muscle-shaped bark- 
louse on apple-trees South <Amer. Ent., April, 1880 [v. 3], 
n. s., v. 1, pp. 107-108. 
Mentious several insects received from J. F. Bailey, of Marion, Ala.; larva of 
Papilio philenor feeds on Aristolochia ; Bombus virginicus 9 robs hives of Apis 
mellifica ; Mytilaspis pomicorticis [= pomorum ] not before received from so 
far south ; means against the same. 
1775. [Riley, C. V.] Chrysalides supposed to be those of Aletia. 
<Amer. Ent., April, 1880 [v. 3], n. s., v. 1, p. 108. 
Answer to letter of W. J. Jones ; pupae of Agrotis inermis [ = saucia ] and Pro- 
dcnia lineatella from cotton field. 
1776. [Riley, C. V.] Apple-twig borer. <Amer. Ent., April, 1880 [v. 
3], n. s., v. 1, p. 108. 
Answer to inquiry of T. Y. M.; occurrence and habits of Amphicerus bicau- 
datus. 
1777. [Riley, C. V.] Clover-weevil. <Amer. Ent., April, 1880 [v. 3], 
n. s., v. 1, p. 108. 
Answer to inquiry of W. W. F.; several “weevils” infest clover-seeds; Hy- 
lesinus trifolii infests the roots and lower part of the stem. 
1778. [Riley, C. V.] Effects of cold applied to the chrysalides of but¬ 
terflies. <Amer. Ent., May, 1880 [v. 3], n. s., v. 1, pp. 110-111. 
Notice of the experiments of W. H. Edwards; effects of hibernation in the 
chrysalis aud imago states. 
1779. [Riley, C. V.] Moth issuing from a larva. <Amer. Ent., May, 
1880 [v. 3], n. s., v. 1, p. 114. 
Notice of J. J. Weir on the issuance of Orgyia sp. from the larva without 
passing through the pupal stage. 
