206 HELICOMITUS PHILIPPINENSIS. 



Helicomitus philippinensis, n. sp. 



Aütenuae black, some fulvous joints at the base, reaching 

 about the beginning of the pterostigma. The joints in the 

 apical half somewhat thickened. The five joints preceding the 

 last three before the club, provided at the tip, on the inside, 

 with a distinct dent which is directed backwards. 



Face wholly yellow, with white hairs; the tips of the 

 mandibles black. 



Vertex brown with greyish hairs mixed with black. 



Occiput yellow with two large, shining black spots be- 

 hind the eyes. 



Eyes brownish, shining, with the upper division nearly 

 twice the size of the lower. 



Thorax black, above with a very broad yellow stripe 

 along the middle, extending from the prothorax up to ^/^ 

 of the length of the sixth abdominal segment. The under- 

 side greyish brown, with short white villosity and a white 

 spot on the sides between the insertions of the wings. 



Legs yellow, tip of tibiae, articulations of the tarsi and 

 the claws, black. Femora and tibiae with some long white 

 hairs. Spurs black, straight, those of the two anterior 

 pairs of legs as long as the first two tarsal joints taken 

 together. Those of the hindlegs as long as the first tarsal joint. 



Abdomen brownish black, bare; the first segment broad 

 at the base, with two black hairtufts which are directed 

 backwards, in the middle it is strongly constricted and 

 then gradually thickened towards the tip ; second and third 

 segment also thickened, but the third is diminishing towards 

 the tip and so the following segments. 



The yellow streak on the abdomen is narrow on the 2 

 first segments, the largest breadth it has on the third 

 segment and tlien it is gradually diminishing to ^/^ of 

 the 6th segment. The pleurae of the 3rd and 4th segment 

 are also yellowish and the dark brown underside has on 

 the sides a yellowish coloration on the 3rd, 4th and 5th 

 segment. The following segments are all dark brown, 



Notes from the Leyden ^Iu»eutri, Vol. XXIV. 



