88 Psyche [April 



Hydropsychidje. 



Rhyacophylax lobatus Ulmer. 



Many specimens from Manaos, Amazonas; Camp 41, 360 Kilo- 

 meters from Porto Velho; and Madeira Mamore River, Matto 

 Grosso, Brazil. (Mann coll.)- Previously known from Argentine. 



Ecnomodes buchwaldi Ulmer. 



Four from Manaos, Amazonas; and Camp 43, Madeira Mamore 

 River, Matto Grosso, Brazil (Mann coll.). Previously known 

 from Peru; a very distinct and handsome little species. 



Cyrnellus gen. now 



Differs from Cyrnus in having median cell of fore-wings open, and the subcosta 

 runs into radius, or connected obliquely thereto. Type C. minimus Bks. 



Includes also ('//runs risi Ulmer. 



Cyrnellus minimus sp. nov. 



Agrees with C. risi in venation, length of cells and forks of both wings. However 

 the wings are of a uniform brown, not darker around outer edge; the lower appen- 

 dages of the male are not as heavy as in C. risi when seen from the side, and the 

 insect is smaller (fore wnngs hardly 4 mm. long); only apical half of antennae 

 strongly serrate; the wings are rubbed, but show some scattered golden hairs. 



From Camp 41, 360 Kilometers from Porto Velho, Brazil, and 

 Madeira Mamore River, Matto Grosso, Brazil (Mann coll.). 



Appendix. 



As an appendix I give a table of the species of Leptonema known 

 to me; two others are described, one, L. speciosum Burin, from Brazil 

 has dark marks on the wings but not near as heavily marked as 

 L. cinctum, the other from Southern Brazil, L. sparsum Ulmer, 

 has a peculiarity in the venation. I describe one new species from 

 Guatemala, and have yet one other species which appears to be 

 new. 



1. Wings with dark streaks all over, leaving hyaline spots cinctum. 



Wings nearly uniform, or darker only near the stigma 2 



2. Two or three black dots near costal base of fore wings 3 



No such dots 5 



