IIELICOMITUS PHILIPPINENSIS. 207 



except the apical one, which has a yellow colour and is clothed 

 with short black hairs ; at the underside it has a yellow 

 genital valve with an obtuse tooth, directed backwards. 



Wings hyaline with smoky brown coloration, probably 

 caused by maturity. Network rather open. Anterior pair 

 larger and broader than the posterior one. The costal area 

 with 24 nervules, decreasing in breadth from near the 

 base to about half the length of the wing, then nearly 

 parallel with the subcosta. 



Pterostigma blackish brown, consisting of 6 — 7 nervules. 



Pterostigraatical area consisting in the basal part of 2 

 rows of cells, in the apical part of 3 rows. 



The tip is gradually rounded off. The anterior border 

 nearly parallel with the hind border, but the anal angle 

 is very distinctly indicated because the wing gets here 

 gradually its largest breadth, that is at about one third 

 from the base. The base somewhat excavated, not appen- 

 diculated. Postcosta confluent with the lower branch of 

 cubitus in all the wings. The hindwings have the shape of 

 the anterior ones but they are smaller and narrower. Anterior 

 and posterior margin more convergent towards the tip, in 

 the first third they get their largest breadth ; the inner 

 margin is clothed with some very slender greyish hairs, 

 and has no incision. 



20 — 22 costal veinlets. Costal area decreasing suddenly 

 in breadth from the Gth costal veinlet taken from the base 

 and then nearly parallel with the subcosta. 



Pterostigma pitchy with black veinlets like in the fore- 

 vyings. Five veinlets. 



Length of antennae 19 mM. 



breadth » head 5 » 



length » body 27 » 



» » abdomen 19 » 



» » fore wing 24 » , greatest breadth 7 mM. 



» » hind » 20 » , » » 6 » 



One male from Luzon (Philippines), Montes Florida blanca 

 low. 9 — 10 June 1903, collected by Waterstradt. By the 



Notes from the Leyden IMuseizm, Vol. XXIV. 



