30 BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
369. Coquillett, D.W. Red scale parasite. <Calif. Fruit Grower, 
21 September, 1889, p. 3. 
A new species of Coccopliagus. 
370. Coquillett, D. W. Wash for the red orange scale. <Pacitic 
Rural Press, 21 September, 1889, p. 247. 
371. Coquillett, D.W. The mealy-bugs of the United States. <West 
Amer. Scientist, October, 1889, pp. 121-123. 
Synopsis of the species; descriptions of two new forms, one on cypress, one 
on sage. 
372. Coquillett, D.W. The gas process for scale insects. <Insect 
Life, v. 2, October, 1889, p. 122. 
373. Coquillett, D. W. How the resin w r ash kills. <Rural Califor¬ 
nian, December, 1889. 
Argues that it is the suffocating rather than the caustic property of the wash 
that proves fatal to the scale insects sprayed with it. 
374. Coquillett, D.W. Report on various methods for destroying 
scale insects. <Rept. of the Entom. for year 1888 (1889), pp. 
123-133. 
The gas treatment; resin compounds; and Bordeaux mixture. 
375. Coquillett, D. W. The use of hydrocyanic acid gas for the 
destruction of the red scale. <Insect Life, v. 2, January and 
February, 1890,- pp. 202-207. 
376. Coquillett, D. W. The dipterous parasite of Diabroticct soror. 
<Insect Life, v. 2, January and February, 1890, pp. 233-236, 
1 fig. 
Description of Celatoria crawii. 
377. Coquillett, D.W. (A curious case of insect litigation.] <Insect 
Life, v. 2, January and February, 1890, pp. 252-253. 
378. Coquillett, D.W. The new scale remedy. <Calif. Fruit Grower, 
22 February, 1890, p. 119. 
Notes on the hydrocyanic acid gas remedy. 
379. Coquillett, D. W. The San Jose scale. <Weekly Blade (Santa 
Ana, Calif.), 6 March, 1890. 
Advises using the resin wash for the destruction of this pest. 
380. Coquillett, D. W. Hydrocyanic acid gas for red scale. <Sci. 
Amer. Supplement, 31 May, 1890, p. 1208. 
381. Coquillett, D. W. [Re Lestophonus.] <Insect Life, v. 2, May 
and June, 1890, pp. 377-378. 
382. Coquillett, D. W. [Fumigation for scale insects.] <lusectLife, 
v. 3, September, 1890, p. 72. 
383. Coquillett, D. W. Scale-eaters at the South. <Pacific Rural 
Press, 8 November, 1890. 
Treats of several insects that prey upon scale insects. 
384. Coquillett, D. W. The cypress twig-borer. <Insect Life, v. 3, 
November, 1890, pp. 116-117. 
Depredations in California of Argyresthia cupressella. 
