100 BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
990. Richardson, Joshua. The screw-fly and its ravages. <Peoria 
[Illinois] Medical Monthly, February, 1883. 
991. Ritchie, Andrew S. Notes on the Spectrum femoratum. <Can. 
Nat., February, I860, n. s., v. 2, pp. 66-69. 
Characters and habits of Spectrum [= Diapheromera~\ femoratum. 
992. Ritchie, A. S. The toad as an entomologist. <Can. Nat., June, 
1869, n. s., v. 4, pp. 174-178. <Amer. Nat., August, 1871, v. 
5, pp. 329-334. 
Food habits of Bufo americanus. 
993. Ritchie, A. S. Notes on the small cabbage butterfly. Pieris 
rupee. <Oan. Ent., September, 1869, n. s., v. 4, pp. 293-300. 
994. Rivers, J. J. Algeria hemizonice Hy. Edw. <Papilio, January, 
1883, v. 3, p. 26. 
Habits and injuries. 
995. Robbins, P. (1. Cankerworms. <New England Farmer, 25 June, 
1830, v. 8, p. 384. 
Ravages of and means against Anisopteryx [— Paleacrita ] vernata. 
996. Robbins, P. G. Security against cankerworms. <New England 
Farmer, 13 July, 1831, v. 9, p. 410. 
Successful use of troughs with liquids 
997. Robinson, F. C. Seventeen-year Cicada in Pennsylvania. 
<Amer. Ent., July, 1880, v. 3, n. s., v. 1, p. 178. 
Occurrence of Cicada [= Tibicen] septendecim at Uniontown, Pa., in 1880. 
998. Rogers, R. Yashon. On some of our common insects. 15.— 
The Coccinellid®. <Can. Ent., May, 1874, v. 6, pp. 81-85, 
figs. 9-15. 
General account of the habits and characters of the Coccinellidse, with 
special mention of some of the commoner species. 
999. Rogers, R. Y. On some of our common insects. The luna moth— 
Actias luna Linn. <Oan. Ent., August, 1875, v. 7, pp. 141-143. 
<Ann. Rept. Ent. Soc. Ontario for 1875,1876, pp. 43-44. 
Characters, life history, habits, and food plants of Actias luna. 
1000. Rogers, R. Y. The luna moth ( Actias luna). <Can. Ent., Oc¬ 
tober, 1875, v. 7, pp. 199-200. 
Habits. 
1001. Rogers, R. Y. Entomology for beginners.—Tiger beetles. 
<Can. Ent., April, 18S0, v. 12, pp. 61-05, figs. 10-15. <Ann. 
Rept. Ent. Soc. Ontario for 1880,1881, pit. 22-25, figs. 4-9. 
Characters, habits, and life history of the Ciciudelidie; notice of several of 
the commoner Canadian species. 
1002. Rogers, R. Y. Entomology for beginners. <Can. Ent., August, 
1880, v. 12, pp. 148-152, fig. 21. <Ann. Rept. Ent. Soc. Onta¬ 
rio for 1880, 1881, pp. 31-34, fig. 13. 
Characters and habits of Clytus [= Placjionotus'] speciosus, C. [=Cyllene } 
pictu.8, and C. [=C.] robinke. 
