70 



Other pests recorded are Anomala undidata, Mels., Acysfa perseae, 

 Held, (avocado Tingid), Empoasca miniienda, Ball (avocado leaf- 

 hopper), Pseiidococcus nipae, Mask, (coconut mealy bug), Saissetia 

 oleae, Bern, (black scale), Gracilaria perseae, Busck (avocado leaf-roller) 

 and Dysdercus suturellus, H. S. 



Cory (E. N.). Some Notes on a New and Promising Insecticide. — 



//. Econ. Ent., Geneva, N. Y., xiv, no. 4, August 1921, pp. 345- 

 347. [Received 5th December 1921.] 



An alcohoHc extract of pyrethrum prepared in the form of a heavy 

 soap has proved effective as a contact insecticide when tested against 

 Gargaphia solani, Held, (egg-plant lace-bug), at a dilution of 1 to 300; 

 rose Aphids at 1-100 and 1-300; Aphis rumicis, L. (bean aphis), 

 at 1-100 ; Macrosiphuni sanborni, Gill, (chrysanthemum aphis), at 

 from 1-100 to 1-2,000; Malacosoma americana, F. (tent caterpiUar), 

 at 1-600 ; the sawflies, Cladius pectiniconiis. Four., and Enddomyia 

 rosae, Harr., at 1-100 and 1-600 ; and Pteronus rihesii, Scop, (imported 

 currant worm), at from 1-500 to 1-1,000. Against Pseiidococcus citri, 

 Risso, and red spider, at 1-100, the results were unsatisfactory ; whilst 

 tests against the eggs of Pieris {Pontia) rapae, L. (imported cabbage 

 worm) were incomplete. There is very Httle difference between 

 the weaker and stronger solutions with or without the addition of 4 lb. 

 soap to 500 U.S. gals. 



This insecticide has a decidedly repehent action, and tent cater- 

 pillars refused at first to eat leaves treated with it. About 50 per 

 cent, of those confined with treated leaves died after from 5 to 10 

 days, indicating a possible toxic action also. 



In no instance was the foHage or most delicate flowers injured, 

 and this insecticide is also promising as a spray for forage materials 

 where arsenicals cannot be used. 



Smith (H. S..). Biological Control of the Black Scale [Saissetia oleae, 



Bern.) in California. — //. Econ. Ent., Geneva, N. Y., xiv, no. 4, 



August 1921, pp. 348-350. [Received 5th December 1921.1 



A brief account is given of the insectary work in connection with 



Aphycus lounshuryi. How., for the control of Saissetia oleae, Bern., 



in California [R.A.E., A, ix, 3391. Since the introduction oi A. 



lounshuryi, Quaylea whittieri, Timb., a secondary parasite of Scutellista 



and other parasites, and an undescribed species oiEusemion, a secondary 



on parasites of Coccus hesperidwn, have increased very greatly. The 



effect of their presence on the practical outcome of the work is 



problematical. 



Stockwell (C. W.). The Japanese Beetle Quarantine.—//. Econ. 



Ent., Geneva, N.Y., xiv, no. 4, August 1921, pp. 350-352. 



[Received 5th December 1921.] 

 Since the discovery of the Japanese beetle [Popillia japonica] in 

 1916, it has spread over an area of approximately 85 sq. miles, 75 of 

 which are in New Jersey and the remainder in Pennsylvania. From 

 the results of the quarantine regulations of the past two years, it seems 

 advisable to continue the work and prevent, if possible, its widespread 

 distribution over the United States. The finding of the beetle in 

 Pennsylvania has necessitated the creation of a quarantine by that 

 State to supplement the New Jersey orders in force since 1st June 1919 

 [cf. R.A.E., A, viii, 512]. The present regulations concerning the 

 shipping of potted or unpotted plants from greenhouses and the 



