523 



sprays, of which two or three applications for the season should 

 completely protect the crop. [See also this Review, Ser. A, ii, p. 694.] 

 The boll weevil [Anthonomus grandis] may be controlled with calcium 

 arsenate applied by means of a dust gun so as to drive the poison well 

 through the plants. This treatment should be applied weekly and 

 maintained as long as the cotton continues to grow and set bolls. This 

 measure is equally effective against A. argillacea. 



Thomas (F. L.). The Argentine Ant and how to control it.—Alahama 

 Agric. Exp. Sta., Auburn, Circ. 39, December 1918, pp. 55-58 

 [Received 10th October 1919]. 



The bulk of the information contained in this popular bulletin 

 on the Argentine ant [Iridomyrmex humilis, Mayr] has already been 

 noticed, especially in respect of the methods of trapping [see this 

 Review, Ser. A, vi, p. 313]. 



The poison-bait recommended is composed of sugar 15 lb., water 7 

 U.S. pints, and tartaric acid ^ oz., boiled for 30 minutes and allowed to 

 cool. To this sodium arsenate | oz., dissolved in 1 U.S. pint of hot 

 water and well stirred, is added. This bait is rendered more attractive 

 by the addition of 1| lb. of honey and should remain effective for 

 several months. 



Hinds (W. E.). Sweet Potato Root Borer {Cylas fonnicarius, 01.). — 

 Alabama Agric. Expt. Sta., Auburn, Circ. 37, February 1918, 

 8 pp., 1 plate. [Received 10th October 1919.] 



This deals in a popular manner with the bionomics and control of 

 Cylas for micarius, 01. (sweet potato weevil). 



The rules and regulations of the Alabama State Board of Horticulture 

 for preventing the introduction of this pest are given. The quarantined 

 area is defined and includes any area where sweet potatoes are grown 

 within five miles of any known point of infestation. Sweet potato 

 plants or other food-plants oW.formicarius may not be transferred from 

 infested territory to non- infested areas except when specially author- 

 ised ; this apphes also to nursery stock. These regulations took effect 

 from 1st February 1918 and replaced those dated 8th December 1917. 



TiMBEELAKE (P. H.). Revlsion of the Parasitic Chalcidoid Flies of the 

 Genera Homalotylus, Mayr, and Isodromus, Howard, with 

 Descriptions of two closely related Genera. — Proc. U.S. Nat. Mus., 

 Washington, Ivi, pp. 133-191, 4 plates. 



The members of the genus Homalotylus are of economic interest in 

 that they parasitise Coccinellid larvae, and two are known to attack 

 Chrysomelid larvae. 



The new species described include : Homalotylus mexicanus reared 

 from material of Cerojmto yuccae, Coq., on agave in Mexico ; H. quaylei 

 reared from a CoccineUid associated with Pseudococcus citri, Risso, 

 in Sicily ; H. ofricanus, from Coccinellid larvae in South Africa ; 

 H. cocker elli, from Hyperasjns trimaculata, L., associated with 

 Dactylopius confusiis, Ckll., on Opuntia in Texas ; H. affinis, from 

 Hyperaspisosculans, Lee, in colonies of D. confusus, Ckll., in California ; 



(C618) b2 



