208 HYBRIS FLAVICANS. 



very great confusion in the species of Helicomitus it is 

 possible that my species must be referred to Walker's H, 

 immotus from China, but he describes a 9 and I only pos- 

 sess a male. In the collection of the Leyden Museum is 

 a (f Helicomitus from Celebes very similar to my species. 



Hyhris flavicans, n. sp. 



This species is more related to the China and Japanese 

 subjacens Wlk. than to Javanus Burm. 



A good prima facie character to distinguish the new species 

 from the species above mentioned is the colour of the body. 

 This is pale yellow, much paler than in subjacens and 

 javanus and the distribution of this colour is larger than 

 in these species. 



The whole dorsum of the abdomen yellow, except 

 a dark brown streak on the tergites near the pleurae in 

 the first and last segments. The pleurae are dark brown 

 and the underside is brown, not black like in the other 

 species. 



Last segments of the male inflated. 



Appendices of the male large, reddish, bare, at the inside 

 with short black hairs. The form is like that of subjacens 

 but stronger and curved inwards in the middle. The 

 best difference is in the large genital valve which is black, 

 with reddish margins and is prolonged between the appen- 

 dices in a long, red, backwards curved tooth, the tip of 

 which surpasses the back for about 1 mM. The length of 

 the tooth is about that of the appendices. Neither javana 

 nor subjacens has such a tooth at the genital valve. 



The colour of the thorax is also paler yellow and the 

 dark coloration not so bright. 



The villosity of the body is less than in the other 

 species and not so darkly coloured. 



The wings are relatively narrower and seem to get sooner 

 a dark brown colour than in other IIybris-s\)ecies. The 

 margins and the costalmargiu get a somewhat darker colour 

 than the disk of the wing. 



Notes from the Leydeu JMiaseum, Vol. XXIV. 



