OF MALAYA — PART I. 133 



the length from the base ; the basal hair is branched. Thorax. In addition 

 to the usual stout feathered hairs and bristles, the dorsum of the thorax carries 

 a pair of palmate hairs, each whorl being composed of seven narrow lanceolate 

 leaflets. Abdomen. Palmate hairs are borne on the third, fourth, fifth, sixth 

 and seventh segments ; on the first four of these segments the leaflets are 

 broad (figs. 45 and c) ; the average total length of the leaflets on the mid 

 abdominal segments is 0*055 mm. ; the average relation of the filament to total 

 length of filament and body of leaflet is as 1 is to 4 ; the indentations at the 

 base of the filament are minute ; on the seventh segment the leaflets are 

 narrowly lanceolate. The spiracle comb usually carries four large and six small 

 spine-like processes, none of which are toothed. 



Among Malayan species the mature larva of Anopheles tessellatus most nearly 

 resembles that of Anopheles kochi. Both are peculiar in the extreme shortness of 

 the outer anterior clypeal hair, but the inner anterior clypeal hairs are placed 

 farther apart in kochi than in tessellatns, and kochi carries a pair of palmate hairs 

 on the second abdominal segment which tessellatus does not. 



The Pupa. 



The pupa of this species is without any distinguishing feature. The first 

 abdominal segment carries the usual pair of fan-like tufts of branched hairs. 

 Small lateral spines are present on the fourth to seventh segments. 



I am indebted to my colleague, Mr. R. W. Blair, for the drawings accom- 

 panying this paper. 



