1919] ECONOMIC ZOOLOGY- -ENTOMOLOGY. 857 



the pink bollwonn (Peotinophom [Qeleohia] goasypieUo). Accounts of the 



history and origin of tiie pest, the nature and extent of the 1 need by it. 



food plants, etc., first presented, are followed i>y a detailed report of Btudlea >>r 



its life history and habits ami of its natural enemies and control mi 



The estivation or resting stage of the larvae is of particular Importance, since 

 they may remain in cotton seed in a dormant state from sli or eight months 

 to almost two years hefore pupating, and in this way be widelj mated. 



Following an extended discussion ot its life history and habits, the author 

 deals witii its natural enemies, including predacious Insects, mites, spiders, 

 hirds, etc. The parasitic enemies considered include Pimpla roborator, which 

 has rapidly increased and become quite common, the life hlstorj and habits of 

 which are considered at length; a large and a small pteromalid (PteromalU4 

 spp.), a hracouid [Rhogas kitcheneri) , Limnerium Inten upturn, and a hcthyli.l. 



Methods of control considered include winter destruction of f 1 plants, 



destruction of infested boils, destruction of teel or hemp {Hibiscus cannabinus) 

 and bamia (//. esculentjAS) seed capsules, early maturity of the crop, and 

 destruction of the pink bollwonn in cotton seed in various ways, Including 

 heat, fumigation, etc. A note on fumigation of the seed, by V. Mosserl (pp. 

 308-312), is followed by one on the use of arsenical poisons in control of the 

 pink bollwonn. 



Several insects which are liable to be confused with the pink bollwonn are 

 listed, namely, the cotton boll Pyrodercus {Pyrodercus simplex), the hollyhock 

 moth (Crocidusema plebiana), and Cryptoblabes grtidieUa. A note on the 

 possible relation between the pink bollwonn and the ordinary bollwonn {Earias 

 insulana) and a brief discussion of the effect of injury by the pink bollwonn on 

 the germination of cotton seed and ginning outturns of sound and injured sei d 

 cotton from bolls of the first and second picking are appended, together with a 

 bibliography of three pages. Four plates in colors which illustrate the pink 

 bollwonn, the nature of its injury, natural enemies, and insects likely to be 

 confused with it are included. 



The review is by VV. D. Hunter, a recent bulletin by whom on the pink boll- 

 worm has been noted (E. S. K., 39, p. 7G4). 



The seedling gum moth (Nola metallopa), W. W. Fboooatt [Agr. Qaz. V. 8. 

 Wales, 80 (1011)), No. 8, pp. 208-206, figs. 5).— The author records extens 

 damage by this moth to red gum forests [Eucalyptus tVStrata ) in the Peniliquin 

 district, Australia. 



Malaria endemicity of the rice districts of Louisiana and Arkansas, with 

 some observations on types of mosquitoes breeding therein. J. C. G 

 W. C. IVkdy, and L. I. Bates (Jour. Anur. Med. Assoc, 7/ (li Vo. 10. pp. 



12X3-1285, fig. 1).— "The control of the human carrier plus the factor of good 

 Screening have, so far, made negligible the malaria incidence in a typical rice 

 district As it is not yet humanly possible to obtain absolute mosquito con- 

 trol in the rice lields, these measures are Indispensable, 



"The persist. 'id breeding of An<>i,liri<* quadrimaculatus in the rice fields 

 and the repeatedly recorded 'obvious flight distance' of tins mosquito y>( more 

 than a mile emphasize the necessity of the foregoing measures. The observa- 

 tion that Culez superseded anophelines in 'dead' water in the rice fields i 

 serves further study. The positive indications of breeding in crayfish ho 

 which abound everywhere, is suggestive enough to offer a simple solution to the 

 sudden appearance of large larvae or pupa' In puddles after rains, which before 

 were dry. 



"The history incidence index in two widely separated rice districts is the 

 same. The incidence, though less than one would expect, is probablj 



