140 



carried out before planting. A brief description of the adult, egg, 

 larva and pupa of this beetle is given. The life-cycle takes a year. 

 The average duration of the egg-stage was 27 days. The period 

 elapsing between hatching and the first moult varied from 34 to 59 

 days with an average of 42. The first two moults were observed ; 

 they took place in the ground in a chamber resembling the pupal 

 chamber. The prepupal stage in the pupal chamber lasted from 

 12 to 27 days in the cases observed and the pupal stage proper averaged 

 29 days. The beetles remained in the chamber for 10-2G days, this 

 period of rest being longest when the ground was dry. The beetles 

 are on the wing in Java from October to January, i.e., the first months 

 of the wet season. In captivity the larvae preferred potato to 3Ianihot 

 utilissima. Other food-plants include Amarantus gangeticus, 

 A. spinosifs, Portulaca oleracea, Cyperus brevifolius and Panicuni revens. 

 H. leiicophthalma has also been recorded from sugar-cane [R.A.E.. 

 A, iv, 89]. 



The following remedial measures are advised. New clearings should 

 be cleaned from all decaying organic matter (stumps, leaves, etc.) 

 before the flight season. If infestation occurs, soft weeds should be 

 allowed to grow. H. leiicophthalma will feed on these weeds and the 

 injury to Hevea will be reduced. To prevent the spread of infestation 

 it is necessary to capture as many of the beetles as possible. During 

 the daytime they are to be found in great numbers in the soil of the 

 older fields near infested clearings, about 4 inches below the surface. 



Bruch (C). Metamdrfosis de Taphrocerus elongatus, Gory (Coleop- 

 tero Buprestido). — Anales Soc. Cien. Argentina, Buenos Aires, 

 Ixxxii, no. 5-6, November-December 1916, pp. 251-256, 5 figs. 



The Buprestid, Taphrocerus elongatus, Gory, is abundant in the 

 riverside woods of Rio Santiago, near La Plata, on a rush, Scirpus 

 giganteus, which is common in the neighbourhood. The eggs of this 

 beetle are laid on the upper leaf-surface and the larvae mine in the 

 leaves. Pupation also oqpurs within the leaf. The various stages 

 are described. While no exact records of parasites have been made, 

 it is evident that several occur in spite of the protected situation of 

 the larva. These include a number of Chalcids and probably a 

 Braconid. 



LiZER (C). Psylla erythrinae, n. sp. (Homopt.). — Anales Soc. Cien. 

 Argentina, Buenos Aires, Ixxxv, no. .5-6, May-June 1918, ^^p, 307- 

 310, 5 figs. 



Psylla erythrinae, sp. n., is described, and an account is given of 

 each stage in the hfe-history. All stages occur abundantly on the 

 leaves of Erythrina crista-galli in and around Buenos Aires. It is 

 probable that successive generations occur throughout the spring 

 and summer and that hibernation takes place in the adult stage. 

 The leaves of infested plants become yellow and faded owing to the 

 attacks of this Psvllid. 



