BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
1279. [Riley, C. Y.] Cabbage-worms. <Ainer. Ent. and Bot., Oeto- 
ber, 1870, v. 2, p. 341. 
Answer to inquiry of B. H. Foster ; ravages of and means against Pieris rapce. 
1280. [ Riley, C. Y.J The unicorn prominent. <Amer. Ent. and Bot., 
October, 1870, v. 2, p. 341. 
Answer to inquiry of E. Payne ; description of larva and imago of Notodonta 
[= Ccelodasys] unicornis; food-plants and mimicry of the larva. 
1281. [Riley, C. Y.J Insects injurious to the grape-vine. No. 13. 
<Amer. Ent. and Bot., December, 1870, v. 2, pp. 353-359, figs. 
218-219. Reprint with changes: <3d Ann. Rept. State Ent. 
Mo., April, 1871, pp. 84-96, figs. 37-40. See: <Bull. de la 
Soc. Cent. d’Agric., 1870. 
Treats of Phylloxera vastatrix-, see No. 1301 for synopsis of contents. 
1282. [Riley, C. Y.J The fall army-worm. <Amer. Ent. and Bot., 
December, 1870, v. 2, pp. 363-365, figs. 221-223. 
Descriptions of egg, larva, pupa, and imago of Prodenia autumnalis n. sp. 
[= Lapliygma frugiperda] ; variation of the imagos ; seasons, habits, and 
ravages of and means against the same; figures of larva and imago of 
Prodenia commelince and of imago of Leucania unipuncia. 
1283. [Riley, C. Y.J The so-called web-worm of young trout. <Amer. 
Ent. and Bot., December, 1870, v. 2, pp. 366-367. 
Editorial remarks appended to S. J. McBride’s communication; description 
of Simulium piscicidium n. sp. 
1284. [Riley, C. Y.J Hybrid between a grape-vine and a hickory. 
<Amer. Ent. and Bot., December, 1870, v. 2, p. 373. 
Correction of error in mistaking a gall of Cecidomyia vitis-pomum for a hybrid 
fruit. 
1285. [Riley, C. Y.J Death of noted entomologists. <Amer. Ent. and 
Bot., December, 1870, v. 2, p. 373. 
Notice of death of Julius Lederer and J. T. Lacordaire. 
1286. [Riley, C. Y.J Osage orange for the mulberry silk-worm. 
<Amer. Ent. and Bot., December, 1870, v. 2, p. 373. 
Explanation of diff rences in experience in feeding silk-worms on osage 
orange. 
1287. [Riley, C. Y.J Insects named. <Amer. Ent. and Bot., Decem¬ 
ber, 1870, v. 2, p. 373. 
Answer to inquiry of Mrs. M. Ckappellsmitk ; Astoma [= Trombidium] locusta- 
rum pai’asitic on grasshoppers; similar mites on other insects ; food-habits 
of Nemobius vittatus and Orocharis saltator. 
1288. [Riley, C. Y.J Locust-borer. <Amer. Ent. and Bot., December, 
1870, v. 2, p. 373. 
Answer to inquiry of W. R. Howard ; seasons and method of oviposition of 
Arhopalus [— Cyllene ] robinice in black-locust; description of eggs and 
imago of the same. 
1289. [Riley, C. Y.J The northern lady bird $ itslarvm. <Amer. Ent. 
and Bot., December, 1870, v. 2, p. 373. 
Answer to inquiry of C. E. Billings; food-habits and description of larva of 
Epilachna borealis. 
