145 



to the reniform ; a smaller black spot, and considerable violaceous-white along 

 costa above the reniform ; the disc of the wing more or less striated and 

 irrorated ; t. p. line single, black, excurved from costa to vein 4, thence inwardly 

 oblique to inner margin, irregular, produced to small points on the veins ; a 

 black filling between the t. p. and s. t. lines, from costa to about vein 7, and 

 interrupted on the costa by three violaceous-white points; a black blotch between 

 the t. p. and s. t. lines on, above, and below vein 5 ; another black blotch below 

 vein 2; s. t. line irregular, waved, violaceous-white; a terminal row of black 

 crescents between the veins; fringe of ground color, checkered with black, 

 and with a darker interline. Secondaries : fuscous, with a silken sheen ; with 

 obsolescent discal mark and median shade ; marginal line paler, but with a 

 blackish line at the base of the fringe ; fringe pale luteous, interlined darker. 

 Beneath: primaries, fuscous, with black orbicular and reniform, black t. p. line, 

 a wide black band in s. t. space, and black dots between the veins, the whole 

 wing strongly tinged with purple-rufous; fringe luteous. checkered and inter- 

 lined by black : secondaries ; similar, a black discal spot, median line, s. t. shade, 

 and terminal row of dots between the veins, the whole strongly tinged with 

 purple-rufous; fringe luteous, interlined with fuscous. 



Expanse: 42-43 mm. 



A peculiar species, at first sight suggesting a Thyatirid. Accord- 

 ing to Hampson's tables (Cat. Lep. Phal. B. M.) it would fall to 

 Paratrachca; but its closest affinities seem to be in the genus Perigea, 

 group cupcntia. There it is temporarily placed, with the knowledge 

 that subsequent study of minor tufting characters will probably event- 

 ually cause it to be placed differently. Specimens were sent to the 

 National Museum in the belief that the species might have been de- 

 scribed from tropical America, but Mr. Schaus reported "quite un- 

 known to me". 



The holotype has a pale ochreous-brown ground color. 



Type locality: Hereford, Ariz. (Biederman). 



Number and sexes of types: Holotype $, 9-Vn-23; 3 $ Parat3pes. no 

 date. 



Perigea thyatiroides form iiabrosynoides nov. 



Similar to the typical form but the ground color of the primaries dark 

 olivaceous, so much darker that it scarcely appears conspecific. 



Type localities and number and sexes of types: Holotype $ , Hereford, 

 Ariz., no date (Biederman); Allotype 9, Baboquivari Mts., Pima Co., Ariz., 

 1-4 Aug. 1923, (O. C. Poling). 



