BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
365 
2394. Riley, 0. V.—Continued. 
Table of Contents—C ontinued. 
Insects affecting barley.. 575 
The white-grub ( Lachnosterna fusca, Frobl.), 575—The barley 
root-louse ( Scliisoveura sp.), 575—The grain Aphis ( Siphonophora 
avence, Fab.-), 576. 
Insects frequenting or depredating upon buckwheat. 576 
Supposed exemption from insects, 576—Mode of observation, 
576—Signification of symbols, 576—List of insects, 576. 
Insects affecting timothy, 578. 
The glassy cut-worm ( Hadena devastatrix, Brace), 578—Outbreak 
in Indiana in 1886, 578—Doubt as to species concerned, 578— 
Method of work, 579—Traveling, 579—Parasites, 579—Damage, 
580—Condition of fields in October, 580—The grain Spheno- * 
phorus ( Sphenophorus parvulus, Gyll.), 580. 
Insects affecting white-clover.. 580 
The fiavescent clover weevil ( Sitones flnvescens, Allard), 580— 
Infests alsike, 580—Mode of attack, 580—Distribution, 580— 
Eggs and larvae, 580—Hibernation, 580—Summary of life-his¬ 
tory, 581—The clover-stem maggot ( Oscinis sp.), 582—Descrip¬ 
tive, 581—Time and place of oviposition, 581—Number of 
broods, 581. 
Report on experiments in apiculture. By N. W. McLain. 583 
. Letter of transmittal, 583—The “quaking disease,” 583—Nature 
of the disease, 583—Odor of infested hives, 583—Treatment 
with brine and soda, 583—Another form of the disease, 584— 
The foul-brood disease, 584—It is contagious, 584—Live pollen 
the medium, 584—Treatment, 584—Results of treatment, 585— 
How the disease spreads, 587—The control of reproduction, 
587—Difficulties, 587—Experiments in 1885, 588—Device for 
holding the queen, 588—Differences in drones, 589—Proportion 
of impotent individuals, 589—Mr. Baldwin’s experiments at 
Clarksville, Mo., 589—Comments, 590—Fertilization in con¬ 
finement, 590—Apparatus, 590—Results of experiments, 590— 
Proposed experiments, 591. 
2395. Riley, C. Y. The Hessian-fly in England; its origin; its past : 
its future. <London Times, 17 October, 1887. S.-b. No. 61, 
pp. 144-147. 
Date of the introduction of Cecidomyia destructor into England; probability 
that it has been introduced from continental Europe since the time of 
Curtis ; conditions in Great Britain unfavorable for its increase. 
« 
2396. Riley, C. V. The problem of the hop-plant louse fully solved. 
<Gardener’s Chronicle, 22 October, 1887. S.-b. No. 61, pp. 
133-135. Reprint: <Mark Lane Express, 31 October, 1887, v. 
57, pp. 135^-137. S.-b. No. 63, pp. 136-140. 
Life-history, migrations, and mode of hibernation of Phorodon hnmuli. 
2397. Riley, C. Y. On the luminous larviform females of the Phengo- 
dini. <Ent. Mo. Mag., [December], 1887, v. 24, pp. 148-149. 
Structural characters of the larval Phengodini ; food of Zarliipis ; characters 
of eggs, young larvae, and female larvae of Zarliipis and Phengodes ; female 
Phengodini considered an archetypal hexapodal form; relations between 
phosphorescence and differentiation of the sexes. 
