148 Mr. P. Cameron on some 



the first submarginal is very long and narrow, receiving 

 two recurrent nervures, one near its centre, the other a 

 little in front of the first submarginal nervure ; the second 

 cellule is not much shorter than the first above, but is very 

 much shorter on the lower side ; the second submarginal 

 nervure is very much curved, and from near its upper 

 part there issues a short prolongation, where the curve 

 bends down towards the base of the wing (a similar pro- 

 jection is present in Dielocera crassicornis, m., as well as 

 in the very different genus Pterygophoriis). The legs 

 have longish spurs. The marginal cellule is appen- 

 diculated. 



Black, smooth, shining, scarcely pubescent, the anterior 

 tibiae and tarsi fuscous in front. Wings clear hyaline, 

 blackish at the base, fuscous at the apex, and a broad 

 irregular fuscous band proceeds across the middle from 

 the stigma. The apical half of the posterior wing is 

 fuscous ; the costa, stigma, and nervures are black. 



Length 3^ lines ; alar exp. 9 lines. 



Hab. — Villa Nova, Brazil. 



Except in having only three submarginal nervures this 

 insect agrees very well otherwise with D. crassicornis. 

 D. Curtisi differs from it in having the second submarginal 

 cellule very much smaller ; the first and second submar- 

 ginal nervures are scarcely curved, the incision in the 

 clypeus is deeper and narrower. The cheeks are more 

 projecting, and the calcaria are shorter. Carhonaria 

 appears also to come near to the genus Themos, Norton, 

 but that has not the marginal cellule appendiculated. 



I hope to prepare shortly a generic revision of the 

 South American Hylotomides. 



Trailia,* gen. nov. 



=^Hylotoma, section 8, King. Yalu'b. p. 249. 



Antennfe about half the length of the body, densely 

 pilose, the second basal joints small, of nearly equal size ; 

 the third slightly thickened at the middle, the apex 

 conical. Head small, front carinated, the carina spreading 

 out on each side. Wings with one marginal (which has 



• • I have named this genus after my friend Professor Trail. 



