343 



produced on tlio coast in Dcccnilu'i- that at other times, ami we 

 are inclined to exi)lain this as the result of the ti'iuK'ncy to ily 

 southwards in the swarms of the previous months whicii einh'd in 

 providin<i- e^-g's for so many more hopi)ers than the enemies of the 

 locusts could destroy — a seasonal effect. 



in Fehrnary hoppers were nowhere. Douhtless there were 

 plenty of dormant eg-gs, and the Hiers ahroad were dei^ositing- 

 more; Init the condition of the soil was against their hatching. 

 The recrudescence came in the neighhourhood of Jasin where 

 hoppers appeared in the many places marked on map 3 in March, 



In April and right into May ho})])ers appeared on the west of 

 Alor (lajali ahout the upper part of the stream which runs north- 

 westwards to the Linggi river: and at the same time they ceased 

 to appear in the Jasin neighhourhood. The area where, west of 

 Alor Gajah, they mostly appeared was that i>art of the country 

 which had escaped attention in Xovemher. 



Towards the end of May they hegan again to emerge in the 

 • lasin neighhourhood, and continued to do so through June. 



In July they emerged again in the Alor Gajali division. 



The reader should turn to ma];) 4. and note that the localities 

 marked therein fall chieily into three groups, (i) those on the 

 extreme west heing April-May hatchings, (ii) those in the Jasin 

 neighhourhood l)eing May-June hatchings, and (iii) those of the 

 upper part of the valley of the Malacca river l)eing July hatchings. 



Big swarms movements were only detected on two occasions 

 one towards the south-east, the date heing ahout May 9th; the 

 other towards the north east, the date lieing ahout May 2n(l. 



In August hatching out of hoppers continued in the Jasin 

 \'alley, and at the same time they appeared at the various places 

 elsewhere indicated hy the hlack dots on map 5, all hut one on 

 the map heing August hatchings. 



In Septemher tlie whole territory was nearly free of hopiJcrs 

 hut fliers were descending the Malacca river valley, and also 

 moving eastward along the northern horder. 



In Xovemher hatchings occurred at Xyalas aiul at Batang 

 .Malaka, along the Malacca river valley and to the west of it in 

 the Lendu mukim. 



If our records he tal)ulated, hatching within a circle of eight 

 miles of Alor Gajah and hatching within a eircule of eight miles 

 of Jasin, and hatchings close to the coast, the following results : — 



