LIOPTILUS. 43 



or three specimens on the Siskiyou range of moun- 

 tains in Southern Oregon in the middle of June 1872. 

 It approaches even more closely the South-Ame- 

 rican Lioptilus lenis, Zeller (Horae Soc. Ent. Eoss. 

 xiii. p. 477, pi. vi. fig. 169), for an example of which 

 I am indebted to the kindness of Prof. Zeller ; but it 

 diifers from that species in the absence of the small 

 marginal dots on the lobes of the fore wings. 



Lioptilus angustns, sp. nov. 



(PLATE III. FlG. 4.) 



Capite dilute stramineo. 



Alis anticis angustis, dilute stramineis, subochraceo 

 atomosis vel suffusis, puncto subobsoleto in basi 

 fissurce fusco-brunneo, ciliis dilute stramineis 

 (apicalibus extremis exceptis griseis) ; postids 

 cum ciliis dilutissime subcinereis. 



Abdomine stramineo. 

 Tibiis albidis. 



Head very pale straw-colour; palpi the same, but 

 touched with brownish at the sides ; antennae 

 whitish, very faintly spotted with brownish 

 ochreous above. 



Fore wings narrow, very pale straw-colour, faintly 

 dusted or partly suffused with pale ochreous ; a 

 brownish-fuscous inconspicuous dot lies at the 



