192 
BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
1466. Eiley, C. V. Entomology. An interesting lecture on the insect 
world. The subject considered both practically and scientific¬ 
ally. <St. Louis Daily Globe-Democrat, 25 March, 1876, v. 1, 
p. 3. S.-b. No. 10, pp. 161-164. Reprint, with omissions: 
<Ware’s Valley Monthly, August, 1876, v. —, pp. 281-289. 
S.-b. No. 14, pp. 163-167. 
Definition of entomology; claims of tlie science as a liberalizing study; its 
economic importance; metamorphoses, abundance, and almost omnipres¬ 
ence of insects. 
1467. [Riley, C. V.] The insect world. Lecture by Professor Riley at 
Washington University. A practical subject for fruit-growers. 
<St. Louis Republican, 26 March, 1876. S.-b. No. 10, pp. 178, 
179. 
Advantages and interest of the study of insects as compared with that of 
other animals; economic importance of the study; ravages of Glossina 
morsitans. 
0 
1468. Riley, C. Y. Legislation in regard to insects injurious to agri¬ 
culture. <Nation, 30 March, 1876, y. 22, p. 208. 
Amount of insect injuries in the United States ; demand for an independent 
commission; duties and limits of such a commission. 
1469. Riley, 0. Y. Entomology. Another lecture by Professor 
Riley. How to counteract the ravages of insects; direct 
remedies ; practical hints to farmers, etc. Some of the duties 
of the State entomologist. <St. Louis Daily Globe-Democrat, 
1 April, 1876, v. 1, p. 3. S.-b. No. 10, pp. 135-138; 179-184. 
Reprint, with omissions: <Ware’s Valley Monthly, Septem¬ 
ber, 1876, v. —, pp. 369-380. S.-b. No. 14, pp. 168-173. 
Classification of means against insects; cause of the destructive occurrence 
of insects; importation of foreign pests; history of the introduction and 
spread of Pieris rapce, Phylloxera vastatrix, and Doryphora decemlineata ; 
natural history of these insects; spread of insects by small degrees; ad¬ 
vantageous means against certain insects; encouragement of enemies of 
and parasites on noxious insects; need of distinguishing friends from foes ; 
need of co-operation and of legislation for the destruction of insects; duties 
of a State entomologist. 
1470. [Riley, C. V.] Scarlet mite. <Colman’s Rural World, 12 April, 
1876, fig. S.-b. No. 10, p. 160. 
Answer to letter of G. W. Barnes; occurrence, habits, and figure of Trom- 
Mdiurn sericeum ; habits of T. holosericeum ; use of T. tinctorium as a dye. 
1471. Riley, O. Y. Hibernatiou of Amphipyra [=zPyropliila ] pyrami- 
doides. <Psyche, March [13 April], 1876, v. 1, p. 152. 
Extract from 3d Ann. Rept. State Ent. Mo., pp. 72-73, with additional note; 
this species sometimes hibernates as a pupa, and doubtless frequently as a 
moth. 
1472. Riley, C. Y. Bag-worms and borers. How to protect our shade- 
trees and insure their growth. How to render shade-trees 
healthy, Letter from the State entomologist. <St f Lguis Re- 
