L,.ni,4li .il' IhxIv. J\ 0.44, 9, O.GO : ol' ("iv wino, <? , 04, 9,().U4: 

 cxiiansc of w'iiiiis, l--"j iiH'hes. 



Denver City, Colo., 1 <i -Jinie ;), 9 June 27, in the luicky Mouutaius 

 oi'Coloriulo (T. L. .Mead). 



'riie oerurrenee of 1 his c^euiis is of imich iuteresf, a.s it constitutes a new 

 link lietween the Pacific States and European fauna. The male of this 

 species is much smaUer than the female, with the hind wings especially 

 much elongated. The outer row of l.lack dots is wanting in my single 

 specimen. 



TlTIIOSTEGE ROTUNDATA Pa(dvard. I'late !), lig. 29. 



LUliosU(ji- ntlmulata Tack., .Sixth Rep. Peali. Aoa.l. .Sc, 30, 1874. 



2 S . — This is a much smaller species than L. irisrriata, and the liind 

 wiu<Ts are shorter and much more rounded. The markings are very similar. 

 Head and palpi with black and white scales, the palpi stout. The fore tibial 

 spines stout. Fore wing with the same markings as in L. triseriafa, but with 

 the outer submarginal white line narrower and more distinct. The third row 

 of l)lack dots wanting, as in the male of the Colorado species. Fringe and 

 hind wings and under surface as in the Colorado species. A dark apical 

 oblitpu^ streak on the fore wing, not |»resent in 7>. friseriata. 



Length of body, 0.40; of tbre wing, 0.49 ; expanse of wings, 1.00 inch. 



San Diego, Cal. (CI. K. Crotch, Mns. Comp. ZooL). 



This species, while closely resembling L. /riseriata, resembles the 

 European L. faiinata more closely in the peculiar shape of the hind wings 

 than the Colorado species. The fore wings are a little more broadly triangu- 

 lar than in L. triscriata. 



Subfamily OPEROPIITEKINil^ Packard. 



Male — The single genus of this group is so dilierent from the Luyciithue 

 on the one hand, and the Fidoviutp^ on the other, that it seems warrantable to 

 suggest anew subliunily for it. It certainly has no immediate affinities with 

 the Larrnthuc With H'jhniiia and AuisojJtenjx, tiie affinities are remote. 

 The head is short and small; the body, especially the thorax, unusually slen- 

 der.. The palpi are unusually weak and short, not reaching out as far as the 

 front. The front of the head is nearly as wid(> as long. Male antennae 

 d(;nsely ciliated. The wings are larize and broad. Fore wings with the costa 



