389 



BuscK (A.). The Pink Bollworm, PedinopJiora gossypieUa. — Jl. Agric. 

 Research, Washimjton, D.C., ix, no. 10, -ith June 1917, 27 pp., 

 6 plates, 7 figs. 



This monograph, which contains many figures and plates and an 

 extensive bibliography, gives minute morphological descriptions of 

 Pectinophora (Gelechia) gossypieUa, Saund. (pinlc boll-worm), and also 

 of Pyroderces rileyi (scavenger boll-worm) which has often been 

 mistaken for it. The larvae of the latter, however, never do any 

 primary injury to sound cotton bolls, but live as scavengers in the 

 more or less decayed dry bolls that have been injured by other 

 insects. Pectinophora gossypieUa on the other hand is one of the 

 most destructive cotton insects known, and its ravages in Asia, Africa 

 and the Hawaiian Islands amount to more than those of all other 

 cotton pests combined. In Egypt the minimum yearly loss due to 

 it is estimated at one-tenth the value of the crop. In the Hawaiian 

 Islands the cultivation of cotton has practically had to be abandoned 

 on account of it, 50 to 99 per cent, of the bolls being infested in 1915, 

 and one-half to nine-tenths of the lint destroyed. Hitherto, thanks 

 to the stringent regulations of the Federal Horticultural Board, this 

 insect has not become established in the United States, but, un- 

 fortunately, the same cannot be said for Mexico and South America, 

 where in 1915 it was introduced in Egyptian cotton seed into Brazil, 

 and is now scattered and established throughout all the cotton regions. 

 This calamity could have been averted by a properly enforced 

 regulation requiring the fumigation of all imported seed. The exact 

 extent of its distribution in Mexico is not known, but its presence 

 constitutes a very grave menace to the American cotton fields, where 

 its introduction would mean a permanent annual loss of millions of 

 dollars. 



Faes (H.). Traitements effectues dans le Vignoble vaudois en 1916 

 centre le Ver de la Vigne (Cochylis). [Treatments carried out in 

 the Vaudois Vineyards in 1916 against the Vine Worm {Clysia 

 amhigucUa). ] — Progres Agric. Vitic, MontpeUier, Ixvii, no. 23, 

 10th June 1917, pp. 539-548. 

 The experiments recorded in this paper began at the end of May, 

 before the flowering of the vine, at a time when no caterpillars were 

 visible, numerous moths being still on the wing. The vines were 

 treated with a mixture composed of 20 gals, of 1 per cent. Bordeaux 

 mixture and 3 lb. of 10 per cent. Ormond nicotine. From the 9th June, 

 or a month after the appearance of the earliest moths, the first small 

 caterpillars were found hidden under the scales of the buds, and a 

 week later experimental vines were treated with four different insecti- 

 cides, viz., (1) local pyrethrum from unopened flowers, (2) local 

 pyrethrum from full-blown flowers, (3) commercial foreign pyrethrum, 

 a solution being made in each case of 20 lb. prepared pyrethrum soap 

 in 18 gals, of water, and (4) Cxolazine, 4 lb. in 20 gals, of water. Of 

 these, the local pyrethrum gave incomparably the best results, 6 to 

 20 caterpillars being alive as against 550 in the vine treated with 

 commercial pyrethrum and from 554 to 687 in untreated vines [see 

 this Review, Ser. A, v, p. 373]. The effects of treatment with Golazine 

 and the mixture of Bordeaux and nicotine were about equally inter- 

 mediate between the above, 215-237 caterpillars surviving. 



