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. V. 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 newspecies, C. [= Tibicen] 

 tredecim ; dimorphism of the same and of C. [= T. ] septendecim ; seasons, nat- 

 ural history, transformations, enemies, sting, and 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. V. EILEY.] 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 firat generation ; improbability that it will ever become a permanent 

 resident in that region. 



476. [WALSH, B. D., and C. V. RILEY.] The twig-girdler, Oncideres 



eingulatuS) Say. <Amer. Ent., December, 1868, v. 1, pp. 76- 

 77, fig. 66. 



Oviposition and food habits of Oncideres cingulata ; figure of imago and of 

 amputated twig. 



477. [WALSH, B. D., and C. V. RILEY.] An Ichneumon fly mistaken 



for a wasp. <Amer. Ent., December, 1868, v. 1, p. 77. 

 Review of paper in Christian Advocate on "The stiletto wasp" ; Pimpla 

 [= Thalessa] atrata probably mistaken for a wasp. 



478. [WALSH, B. D., and C. V. 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 ; larvae of 

 Lachnosterna fusca infested with Cordyceps ; larvae supposed to have eaten 

 poisonous seed, which has germinated after killing the larvae ; sowing the 

 seed as a means against the larvae. 



479. [WALSH, B. D., and C. V. 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., and C. V. RILEY.] Eggs of the white-marked 



tussock moth. < Amer. Ent., December, 1868, v. 1, p. 79, fig. 67. 



Answer to inquiry of J. M. Hannah; characters of egg and larva of Orgyia 

 leucostigma ; sexual differences ; parasites; figure of the larva. 



481. [WALSH, B. D., and C. V. RILEY.] Currant borers. < Amer. Ent., 



December, 1868, v. 1, p. 79. 



Vnswer to inquiry of B. N. McKinstry; means against Trochilium [ ^iEge- 

 ria] tipnliformis, T. [= Alcatlioe"] caudatum, and Psenocerits supernotatiis. 



