628 



-J\ of many injurious insects. Another useful species observed was an 

 Orthopteron, Parasfagmatoptera unipnnctata, Burm. The unexpected 

 discovery was made of Diatraea saccharalis, F., attacking maize in the 

 province of Buenos Aires. Satisfactory results have been obtained 

 by distributing the fly, Parexorista caridei, Breth., a parasite of the 

 bag-worm, Oeceticus kirbyi, Lnds. Gldng. 



Cecconi (G.). Manuals di Entomologia Forestale. — Florence, Fasc. 9, 

 1922, 80 pp., 76 figs. [Received 27th October 1922.] 



The ninth part (pp. 513-592) of this work [R.A.E., A, ix, 55] deals 

 with a number of Hymenoptera, including many species that are 

 beneficial as enemies of forest pests. 



Sullivan (K. C). Plant Inspection in 'S/lissou.n.—M issouri Univ. 

 Agric. Expt. Sta., Columbia, Circ. 101, December 1920, 16 pp., 

 5 figs. [Received 24th October 1922.] 



A brief summary is given of the plant inspection work carried out 

 in Missouri since 1913. 



Chittenden (F. H.) & Fink (D. E.). The Green June Beetle. — U.S. 

 Dept. Agric, Washington, B.C., Bull. 891, 28th July 1922, 52 pp., 

 10 plates, 7 figs. [Received 25th October 1922.] " 



A detailed account is given of the various stages, life-history, habits 

 and distribution and natural enemies of Allorrhina [Cotinis] nitida, L. 

 (green June beetle) in the United States, much of the information 

 having been taken from previous authors [cf. R.A.E., A, x, 164]. 



In addition to the remedial measures already noticed [loc. cit.'] 

 the use of flowerpots or V-shaped troughs as traps and of poisoned 

 baits, as prepared for cutworms, is recommended in cultivated fields. 



Ritchie (A. H.). Cotton Weevil. — Tanganyika Dept. Agric, Dar- 

 es-Salaam, Circ. 28, 24th August 1922, 5 pp., typescript. 



Apion xanthostylum (cotton weevil), according to German reports, 

 has been confined to the central cotton area of Tanganyika Territory 

 and Amani. Efforts are now being made to discover its exact dis- 

 tribution, and growers are asked to report upon its occurrence and the 

 degree of infestation in their fields. The appearance of the various 

 stages is described. They all occur in the main stem of cotton plants 

 at ground level, at the junction of the main stem and branches, and 

 at the base of the boll, the burrows giving the plant tissues a brownish 

 appearance. Early attack on the main stem leads to complete collapse 

 of the plant ; if the plants are well grown before attack the damage 

 is less serious, although prolonged working in the stems and branches 

 may also induce a sudden collapse. Attack on the branches only 

 leads to poor growth and a light yield, or the branches may wither. 

 The effect of infestation at the base of the boll requires further in- 

 vestigation, but it undoubtedly leads to premature flaring of the boll, 

 and later to withering. The grubs do not, however, enter the boll 

 itself. The method of reporting the occurrence of the pest and of 

 estimating the percentage of infestation is explained, and this method 

 is also applicable to Heliothis {Chloridea) ohsoleta (American bollworm), 

 Earias insulana (spiny bollworm) and Platyedra {PectinopJwra) 



