Lepidoptera of the Amazons. 49 



1st Marcli; Rio Negro, I4tli June; Ayrao, 3rd July; 

 near Amman, liio Purus, 5th September; Guajara, 6th 

 and 7th September ; Pedroso, 25th September; Mamiva, 

 28th September; Mabidhy, 30th September; Mouth of 

 liio Sapo, 13th October; Curimata, Rio Jurua, 30th 

 October; Pupimha, 1st and 5th November; Pupun- 

 hazinho, 8th November, 1874. 



Mr. Trail took twenty examples of this species. 



Atyphopsis, n. gen. 



Allied to Eucereon, but with the general aspect of 

 CercopimorpJia ; it differs structin^ally from Eucereon in 

 the much more transverse discocellulars of secondaries, the 

 third median and the true radial emitted together from a 

 short footstalk. Type, A. modesta. 



55. Atyphopsis modesta, n. sp. 



Primaries pale silky greyish-brown, with black veins 

 and fringe ; secondaries pearly hyaline white, with grey 

 veins and fringe ; body above greyish-brown ; head above, 

 collar and three central segments of the abdomen ochreous, 

 prothorax tinted with ochreous ; anal segments blackish ; 

 pectus and under surface of legs white; palpi and upper 

 surface of legs black : expanse 1 inch 1 line, 



Boaventvu'a, Rio Jutahi, 24th January; Santarem, 4th 

 February, 1875. 



Langucys, n. gen. 



Allied to Glanycns, but with the body thickly clothed 

 with hair, projecting greatly in front of the costal margin 

 of the primaries, the latter being inserted only just in front 

 of the middle of the thorax, the extremely short and con- 

 vex inner margin of the primaries, the greater length of 

 the discoidal cell, the subcostal branches crowded up near to 

 the costal margin, the median branches more widely sepa- 

 rated, the longer secondaries with convex costal margin, 

 short broad triangular discoidal cell with the branches of 

 the subcostal well separated at their origins, and the radial 

 further from the median branches. Type, L. nigrorufus, 



5Q. Langucys nigrorufus. 



Glanycus nigrorufus,^Vi\\ie.v, Lep, Het. Suppl. i. 

 p. 283 (18r)4). 

 Trombetas, 28th February, 1874. 



TRANS. ENT. SOC. 1878.— PART I. (aPR.) E 



