BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 61 
473. | Walsh, B. D., and C. V. Riley.] The hellgrammite fly. <Amer. 
Ent., December, 1868, .v. 1, pp. 61-62, figs. 56-57. 
Habits of Corydalus cornutus ; figures the larva, pupa, and imago; descrip¬ 
tion and figure of the eggs of Belostoma americanum mistaken for those of 
Corydalus. 
474. [Walsh, B. D., and C. Y. Riley.] The periodical Cicada. <Amer. 
Ent., December, 1868, v. 1, pp. 63-72, figs. 58-64. .Extract: 
<Op. cit., June, 1869, v. 1, p. 202. 
Characterization of the 13-year brood of Cicada as a new species, C. [— Tibicen ] 
tredecim ; dimorphism of the same and of C. [= T. ] septendecim-, seasons, nat¬ 
ural history, transformations, enemies, sting, aud injuries of these species; 
chronological history of their several known broods; figures the several 
stages of C. [ = T.] septendecim, the towers made by the pupa and twigs 
with eggs. 
475. [Walsh, B. D., and C. Y. Riley.] The hateful or Colorado grass¬ 
hopper, Caloptenus spretus, Uhler and Walsh. <Amer. Ent., 
December, 1868, v. 1, pp. 73-76, fig. 65. 
Comparative characters and figures of Caloptenus spretus and C. femur-rubrum ; 
native habitat, migrations, distribution, and ravages of the former; harm¬ 
lessness of its second generation in the Mississippi Valley as compared with 
the first generation; improbability that it will ever become a permanent 
resident in that region. 
476. [Walsh, B. D., and C. Y. Riley.] The twig-girdler, Oncideres 
cingulatus, Say. <Amer. Ent., December, 1868, v. 1, pp. 76- 
77, fig. 66. 
Oviposition aud food habits of Oncideres cingulata ; figure of imago and of 
amputated twig. 
477. [Walsh, B. D., and C. Y. Riley.J An Ichneumon fly mistaken 
for a wasp. <Amer. Ent., December, 1868, v. 1, p. 77. 
Review of paper in Chtistian Advocate on “The stiletto wasp”; Pimpla 
[= Thalessa] atrata probably mistaken for a wasp. 
478. [Walsh, B. D., and C. Y. Riley.] A plant growing out of an 
insect. <Amer. Ent., December, 1868, v. 1, p. 77. 
See Nos. 332, 403, 436; extract from Sedalia Press, with comments ; larva; of 
Lachnosterna fusca infested with Cordyceps ; larva; supposed to have eaten 
poisonous seed, which has germinated after killing the larva;; sowing the 
seed as a means against the larva;. 
479. [Walsh, B. D., aud C. Y. Riley.] On our table. <Amer. Ent., 
December,-1868, v. 1, p. 78. 
Notices of The butterflies of North America by W. H. Edwards.—The Cana¬ 
dian Entomologist.—Guide to the study of insects by A. S. Packard, jr. 
480. [Walsh, B. D., aud C. Y. Riley.] Eggs of the white-marked 
tussock moth. <Amer. Ent., December, 1868, v. 1, p. 79, fig. 67. 
Answer to inquiry of J. M. Haunah; characters of egg and larva of Orgyia 
leucostigma ; sexual differences; parasites; figure of the larva. 
481. .[Walsh, B. D., and C. Y. Riley.] Currant borers. <Ainer. Ent., 
December, 1868, v. 1, p. 79. 
Vuswer to inquiry of B. N. McKinstry; meaus against Trochilium [ = Alge¬ 
ria] tipuliformii, T. [= Alcathee] caudatam, and Psenocerns supernotatus. 
