SOME AMERICAN GEOMETRID MOTHS — CAPPS 143 



wing with a large patch of yellow scales at apical angle, the patch 

 divided by a wavy, reddish line; a medial transverse line appearing 

 as a continuation of posterior transverse line of fore wing; outer 

 margin crenulate, produced at vein 4. 



Alar expanse, 35 mm. 



Genitalia (figs. 15, 15A) resemble those of quercivoraria but have 

 the harpe more robust; gnathos narrower, more produced apically; 

 furca longer and more dilated distally; augerlike distal armature of 

 aedeagus without an apical production. 



Female. — Coloration much paler than the male. Resembles some 

 examples of quercivoraria but easily separable by gray borders of 

 transverse lines and rather large patch of ferruginous scales on outer 

 margin of fore wing between veins 2 and 4; a much larger similar 

 patch on hind wing extending from medial transverse line to outer 

 margin, the ferruginous scales more dense below vein 4. Wings paler 

 and less distinctly marked underneath than above. 



Alar expanse, 36 mm. 



Genitalia (fig. 34) very similar to those of quercivoraria but with 

 many of the marginal teeth bidentate. Sclerotization of the ductus 

 bursae not extensive, posterior internal band less than one-half the 

 length of the ductus. 



Type. — In British Museum. 



Type locality. — Volcan de Chiriqui, 3,000 feet (Champion), Pan- 

 ama. 



Food plant. — Unknown. 



Distribution. — Costa Rica: Juan Vinas (June). 



Two specimens examined. 



Remarks. — In view of the fact that considerable variation normally 

 occurs in the genus, I am of the opinion that the material representing 

 the species in the United States National Museum is properly deter- 

 mined even though the pattern of the markings is not so definite and 

 contrasting as that shown in Druce's figure. He had but a single 

 male specimen before him when he described the species. 



8. BESMA MATTEARIA (Schaus) 



Plate 5, Figures 13, 13A ; Plate 10. Figure 33 

 Endropia mattcaria Schaus, Trans. Amer. Ent. Soc, vol. 27, p. ISO, 1901. 



Male. — Closely resembles brea but larger and with a more pro- 

 nounced reddish tinge; upper surfaces of wings appearing smoother, 

 irroration of yellow scales weaker and yellow patches not so distinct. 



Alar expanse, 38 mm. 



Genitalia (figs. 13, 13 A) similar to those of brea but distinguishable 

 by the slenderer harpe, somewhat broader gnathos, and more pro- 

 nounced distal dilation of the furca. 



