62 



liberated in practically new territory, and a number of adult Rhizobius 

 ventmlis were forwarded for liberation in San Francisco. 



The examples of C. montrouzieri distributed were largely those 

 that had been collected by means of hand-screens provided wath funnels, 

 a method that enabled two collectors in 16 hours to obtain 25,000 

 adults, and the following week an additional 35,000 in a district where 

 the beetles had completed their work and there was no further need 

 for them. 



A comparison between two equally infested orchards, in one of which 

 the Coccinelhd was not introduced until the mealy-bug infestation had 

 almost defoliated the trees and there Avas practically no fruit left, 

 and in the other in which it was liberated early in the season with the 

 result that there was little indication of any previous infestation, 

 shows that this biological method is valuable as a preventive rather 

 than as a cure. 



Maskew (F.). Quarantine Division. Reports for the Months of July 

 and August 19iS.—Mthly. Bull. Cat. State Commiss. Hortic. 

 Sacramento, vii, no. 9, September 1918, pp. 552-555. [Received 

 6th December 1918.] 



The following pests were intercepted during the months of July 

 and August : — From Central America : Pseudococcus spp., Aspidiotiis 

 cyanophylli, and Icerija spp. on bananas. From China : Unidentified 

 weevil larvae in sweet potatoes, and Lepidopterous larvae in dry herbs. 

 From Japan : Lepidopterous larvae in peanuts and dry persimmons ; 

 Poliaspis pini on pine trees, and Pseudococcus spp. on Daphne. From 

 Hawaii : Pseudococcus bromeliae and Diaspis bromeliae on pineapples ; 

 larvae of Dacus cucurbitae in cucumbers ; Coccus hesperidum on 

 Cassia nodosa. From New South AVales : Aleurodes sp. on holly. 

 From Tahiti : Lepidosaphes becldi and Morganelh nmskelli on 

 oranges. From Pennsylvania : Tortricids on swamp mandrake ; 

 Aphids on geraniums ; Cerataphis lataniae and Pseudococcus spp. on 

 unidentified plants ; Aspidiotus cyaiiophylli on a guava plant. From 

 Utah : Lepidosaphes ulmi on unidentified foliage ; Cydia pomonella 

 on pears. From Washington : Pseudococcus spp. on poinsettia 

 plants. From Nicaragua : An undetermined weevil in tamarinds. 

 From Mexico : Unidentified Coleoptera on roots ; weevils in palm 

 nuts. From Peru : Phthorimaea operculella and larvae of an 

 unidentified weevil in potatoes. 



Smith (L. B.). Spinach Blight and its Transmission by Insects.— 



Separate [n. d.] from Eleventh Ann. Rept. State Entomologist 

 [Virginia], 1916-1917 [sine loco], 21 pp., 6 figs. [Received 

 7th December 1918.] 

 The information contained in this pamphlet has already., been 

 abstracted from a previous paper [see this Review, Ser. A, vi, p. 453]. 



Keller (G. N.). Investigations as to the Supply and Use of Tobacco 



Products for Insecticidal Purposes. — Jl. Dept. Agric. & Tech. 



Instruction for Ireland, Dublin, xviii, no. 2, 1918, pp. 180-186. 



[Received 7th December 1918.] 



The neglect of spraying on account of the high price of nicotine is 



the cause of considerable loss every year to the horticultural interests 



