76 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 115 



irroration. The genitalia, however, provide ample characters to 

 distinguish incontigua from its nearest relatives as discussed under 

 determinata. 



Gonionota extima, new species 



Figure 56; Platks 1 (Fig. 1), 3 (Fig. 2) 



Alar expanse 22 mm. 



Labial palpus sayal brown; second segment irrorate with black on 

 outer side, basal half of posterior edge white; third segment spotted 

 with blackish fuscous subapically and on inner side; apex ocherous 

 white. Antennal scape silvery white ventrally, sayal brown dorsally; 

 remainder of antenna sayal brown shading to fuscous apically. Head 

 sayal brown mixed with some reddish scales anteriorly and ocherous 

 posteriorly. Thorax buff yellow mixed with reddish ocherous; dor- 

 sally several black spots; posterior tuft brown; tegula sayal brown 

 basally and sparsely irrorate with black. Forewing ground color 

 sayal brown; basal patch buff yellow mixed with reddish ocherous 

 and irrorate with blackish fuscous, from basal third of costa outwardly 

 obhque to middle of cell, then inwardly oblique to basal fourth of dor- 

 sum ; costal part of basal patch broadly suffused sayal brown ; in basal 

 patch, near outer margin, two black discal spots; at end of cell a white 

 dot followed by a few black scales; fold conspicuously indicated by 

 black scales; dorsum broadly suffused fuscous with pm*plish tinge; at 

 apical fourth of costa a prominent white triangular spot followed 

 outwardly and obliquely toward termen by a series of irregular, 

 alternating white and blackish spots; cilia fuscous. Hind wing clay 

 color with conspicuous fuscous scaling in anal area; cilia grayish 

 fuscous mixed with ocherous white. Legs silvery white suffused and 

 spotted with sayal brown and grayish fuscous; foretibia and first 

 tarsal segment reddish ocherous on outer side. Abdomen whitish 

 ventrally, brown dorsally. 



Female genitalia: Ostium broad, opening into the sclerotized, funic- 

 ular posterior portion of ductus bursae; inception of ductus seminalis 

 dorsal, at junction of sclerotized and membranous parts of ductus bur- 

 sae. Signum absent. 



Slide examined: 9, JFGC no. 4236. 



Type: Costa Rica, Tuis (May 28-June 4, Wm. Schaus), USNM 66376. 



Described from unique female type. 



The most characteristic feature of the female is the absence of the 

 signum by which it can be distinguished from all other species of 

 this group. 



