36 



TJNITED STATES NATIONAL MUSEUM BULLETIN 207 



with fuscous towards apex and with a dark line along 

 termen. Alar expanse, 16-19 mm. 



Male genitalia with apex of uncus evenly but rather 

 narrowly rounded; clasper broadly flaring at apex; vin- 

 culimi no longer than broad ; terminal margin abruptly 

 truncate, nearly straight (very slightly concave at 

 middle) ; aedeagus stout. Female genitalia as given for 

 the genus. 



Type locality: Albuquerque, N. Mex. (type in 

 USNM). 



Food plant: Unknown. 



Distribution: New Mexico, Albuquerque (July); 

 ArizoTM, Christmas, Kiugman (Oct.), Phoenix (Mar.). 



14. Birinus, new genus 



Type of genus: Birinus russeolus, new species. 



Tongue well developed. Antenna simple and pubes- 

 cent. Labial palpus upturned, slender, barely reaching 

 to vertex; third segment shorter than second, acuminate. 

 Maxillary palpus minute, filiform. Forewing smooth; 

 11 veius; vein 2 from before (but moderately near) 

 lower outer angle of cell; 3 from the angle, closer to 4-5 

 than to 2 ; 4 and 5 very shortly stalked ; 6 from very near 

 to upper angle of cell, bent towards base, approximate 

 at base to stalk of 8-9 ; 8 and 9 long stalked (for more 

 than two-thirds of their lengths) ; 10 from the cell, closely 

 approximate to stalk of 8-9 for a considerable distance 

 beyond cell. Male without costal fold. Hind wing with 

 vein 2 from well before lower outer angle of cell; 3 from 

 the angle, connate with the stalk of 4-5 ; 4 and 5 stalked 

 for a little over half their lengths; 7 and 8 closely approx- 

 imate for a short distance beyond cell; cell about half 

 the length of wing; discocellular vein curved. Eighth 

 abdominal segment of male simple. 



Male genitaHa with apical projection of gnathos long, 

 nearly straight, needlelike. Uncus spatulate, broadest 

 at apical margin. TranstUla complete, a very slightly 

 curved band (nearly straight on posterior margin), 

 broad at its bases, narrow at middle. Harpe with sac- 

 culus strongly sclerotized throughout its length and with 

 apex produced as a short spur at lower outer angle of 

 harpe; costa very short, sclerotized; bent upward at a 

 sharp right angle a short distance from base, not pro- 

 duced; cucullus forming more than half of the harpe 

 area. Sclerotized part of anellus greatly reduced. Aede- 

 agus long, moderately stout, smooth; penis armed with 

 two narrow, blade like cornuti and numerous fine granu- 

 lations. Vinculum triangulate, sclerotized only along 

 margins. 



The foregoing description is incomplete, as the female 

 is unknown; but the new genus seems to be justified by 

 the male genitalia, which are unlike anything else in the 

 American fauna. 



64. BirinuB russeolus, new species 



Figures 8, 186 



Forewing reddish brown, the rust-red shading a little 

 more pronounced in outer costal and marginal areas and 

 along lower vein of cell; a faint pale, clay-colored blotch 



in outer median area between vein 8 and the lower fold, 

 enclosing in its center a small patch of blackish brown 

 scales and at its inner margin bordered by a similar 

 blackish smudge formed by the confluent discal spots; 

 on the fold below and just before lower outer angle of 

 cell a somewhat larger blackish brown patch preceded 

 by a small clay-colored spot; a thin line of dark scales 

 along the remainder of the fold to base of wing; the usual 

 antemedial and subterminal lines obsolete; terminal dots 

 very faint. Hind wing pale smoky fuscous, the veins 

 brown and the cell filled with brown scaling. On the 

 underside of fore and hind wings dark brown sex-scaling 

 (a male character) covers the upper wing area (above 

 lower margin of cell) from base to somewhat beyond the 

 outer margin of the cell. Forefemora of male with a 

 strong, clay-colored, hair tuft from upper basal angle 

 (also a male character). Alar expanse, 22 mm. 



Male genitalia as given for the genus. Female un- 

 known. 



Type locality: Tumatumari, Potaro River, British 

 Guiana (t3^e in Cornell). 



Food plant: Unknown. 



Described from unique male type collected by W. T. 

 M. Forbes, June 20, 1927 (Cornell lot 760 sub. 114). 



15. Genus Bertelia Barnes and McDunnough 



Bertelia Barnes and McDunnough, Contributions, vol. 2, p. 140, 

 1913. (Type of genus: BerieZia ^nseHa Barnes and McDun- 

 nough.) 



Tongue well developed. Antenna of male with a 

 strong posterior scale tuft on basal segment; shaft with 

 a deep incurvation (sinus) at base, the sinus containing 

 a few minute spinelike thorns but no scale tuft, shaft 

 beyond sinus strongly unipectinate; antenna of female 

 simple and pubescent. Labial palpus upturned on male, 

 reaching a trifle higher than vertex; obUque on female; 

 third segment on male slender, acuminate, about half 

 the length of second, on female shorter and somewhat 

 expanded with scales at apex. Maxillary palpus squa- 

 mous. Forewing smooth; 11 veins; vein 2 from well 

 before lower outer angle of cell, 3 from the angle; 4 and 

 5 shortly stalked; 6 from below upper angle of cell, 

 straight; 8 and 9 stalked for a trifle more than half their 

 lengths; 10 from the cell, closely approximate to the 

 stalk of 8-9 ; male without costal fold. Hind wing with 

 vein 2 from well before lower outer angle of cell; 3 from 

 the angle; 4 and 5 contiguous, shortly anastomosed or 

 stalked, usually stalked for less than half their lengths ; 

 7 and 8 closely approxunate for haK their lengths beyond 

 cell; cell about half the length of wing; discocellular vein 

 curved. Eighth abdominal segment of male with a pair 

 of ventrolateral hair tufts. 



Male genitalia with apical process of gnathos de- 

 veloped as a stout hook, slightly notched at apex. 

 Uncus triangulate. TranstUla incomplete, but with 

 the elements long and stout, their apices broadly and 

 irregularly developed and hooked. Harpe simple. 

 Anellus U-shaped, its lateral arms dorsolaterally flat- 

 tened. Aedeagus with a short row of minute scobina- 



