150 



until this feeding has taken place, and it is therefore indispensable- 

 for development. The shortness of the period is due to the fact 

 that in the case of S. laevis the immaturity is not great. 



An exact morphological and biological study of the other species, 

 of the genus Scolytus is necessary before the significance, cause and 

 duration of this feeding can be ascertained. 



Einschleppungsgefahr von Getreidekapuzinern und argentinischer 

 Ameise. [The Danger of the Importation of Rhizopertha domi- 

 nica, F., and Iridomyrmex humilis, Mayr.] — Reprint from Mitt. 

 Deutsch. Landw.-Ges., 1920, no. 48, 1 p. 



During the war, stocks of cereals that accumulated in Australia 

 and Argentina were severely infested by various pests. According 

 to a report of the Marseilles Colonial Institute, Australian wheat was 

 particularly badly infested with Rhizopertha dominica, F., and there 

 was a danger of French mills and stores being affected. The Imperial 

 Biological Institute in Berlin investigated the question of the possible 

 extension of such a danger to Germany, and it is stated that there 

 is no evidence of any extensive importation of R. dominica into 

 France. Another pest, the Argentine ant, Iridomyrmex humilis,. 

 Mayr, has become a serious menace in the south of France, but owing 

 to its requirements as regards warmth, it is not likely to be an outdoor 

 pest in Germany, though plants under glass may suffer should it be 

 introduced 



EsTALiLLA (H.). The Atis Moth Borer, Heterographis bengalella, Rag. 

 (Abstract.) — Philippine Agric., Los Baiios, x, no. 4, November 

 1921, p. 169. 



Heterographis bengalella. Rag., is a serious pest of atis [Anoiia 

 squamosa] at Los Baiios. It is fairly well distributed throughout the 

 Philippines, attacking also Anona innricata and other fruits of this 

 genus. It is also recorded from India. The eggs are laid singly or 

 in groups of two or three in the sutures and on the stems of the fruit, 

 rarely on the leaves. They hatch in from four to five days. The 

 larvae bore at once into the fruit and continue making fresh tunnels 

 in it. They are mature in from 12 to 19 days after hatching, and 

 pupate in the tunnel near the epidermis of the fruit. The moths, 

 emerge 12 days after pupation. The principal remedial measures are 

 collection and burning or burying of the attacked fruit, which may 

 be recognised by the presence of frass on the surface. 



Fletcher (T B.). Report of the Imperial Entomologist. — Sci. Repts. 

 Agric. Res. Inst., Pusa, 1920-21, Calcutta, 1921, pp. 41-59, 

 1 table, 6 plates. [Received 18th January 1922.] 



Continued investigation of borers in sugar-cane and other Gramina- 

 ceous plants was the principal work undertaken during 1920-21. 

 Thin varieties of cane appear to have a greater immunity to attack 

 than thick ones. 



A severe attack of Aphids on an experimental crop of wheat was 

 checked in a few days by liberating large numbers of Coccinellid 

 beetles. An attack of red spider on jute was controlled by spraying 

 with crude oil emulsion and sulphur. Many adult females of the 

 scale, Monophlebus octocaniatus, were found in April on peach trees. 



