201 



Lewis (A. C). Annual Reports of the State Entomologist for 1919 



and 1920.— Georgia State Bd. Ent., Atlanta, Bulls. 58 & 60, Mav 

 1920 & 1921 , 27 pp., 2 maps ; & 32 pp. [Received 14th February 

 1922.] 



The various inspections undertaken during the j^ears 1919 and 1920 

 in Georgia are recorded. Brief accounts are given of the insects and 

 diseases observed during these years and the measures undertaken for 

 their control. Dusting experiments with calcium arsenate for the 

 control of the cotton boll-weevil [Anthonomus grandis] have already 

 been noticed {R.A.E., A, viii, 302; ix, 20]. 



MiLsuM (J. N.). The African Oil Palm in Sumatra.— /l^nc. Bull. 

 F.M.S., Kuala Lwnpur, ix, no. 2, April-June 1921, pp. 90-104. 

 [Received 14th February 1922.] 



The pests of the African oil palm [Elaeis guineensis] in Sumatra 

 are practically the same as those of the coconut. In one district a 

 large block of oil palms were badly attacked by a Psychid, which 

 killed the majority of the leaves. Reproduction of this moth is rapid, 

 the female producing about 3,000 eggs. The pupae are frequently 

 attacked by a Tachinid parasite. Spraying the palms with one part 

 Paris green to 1,000 parts water by means of a power spra3^er is con- 

 sidered the most effective method of destroying the pest. It is, 

 however, an expensive one, particularly when the palms are tall, 

 so that much may be gained by periodical inspection and prompt 

 treatment immediately infestation is noticed. Both Oryctes rhino- 

 ceros (coconut beetle) and Rhynchophorus ferrugineus (red weevil) 

 are becoming troublesome. Among minor pests are the larvae oi 

 Melissoblaptes rufovenalis, which tunnel in the nearly ripe nuts. 



C[orbett] (G. H.). Oryctes rhinoceros, L. (Black or Rhinoceros Beetle). 



— Agric. Bull. F.M.S., Kuala Lumpur, ix, no. 2, April-June 

 1921, pp. 114-121, 1 plate. [Received 14th February 1922.] 



Leefmans' paper on Oryctes rhinoceros, L., in Java [R.A.E., A, 

 ix, 45-49] is considered to contain such useful information that a 

 resume of the English summary to the paper is given, for the guidance 

 of planters in Malaya, while the author adds certain remarks and 

 criticisms of his own. The beetle has been under observation in Kuala 

 Lumpur for some months, and the life-history figures obtained are 

 similar to those given by Leefmans. At Kuala Lumpur, the incu- 

 bation period is from 10-18 days, as compared with 11-13 in Java, 

 and the pupal stage requires rather longer than 19-27 days ; in 

 Malaya there is also an inactive larval stage in the cocoon prior to 

 the larva pupating. Additional breeding-places in Malaya are the 

 bark of Melaleuca leucadendron, though the communal refuse heaps 

 of the villages are undoubtedly the most important ones. 



With regard to the recommendations for the burying of tree-trunks, 

 and the ordinance proclaiming the necessity of uprooting dead or 

 badly infested trees and burying them at a depth of not less than 

 three feet, it is pointed out that this enactment was evidently framed 

 with regard to the fact that beetles, grubs and eggs might be in the 

 decayed wood, and is not designed merely to prevent the adults from 

 ovipositing in the wood. The criticism is also made that, in the case 

 of the experimental pits described in the Javan investigations, the 

 figures would have been much more convincing if the treated and 



(5980) o 



