38 PROCEEDINGS OF THE NATIONAL MUSEUM Vol. 117 



grayish fuscous, the forewing with a slight coppery luster; posterior 

 tip of tegula and posterior end of thorax somewhat lighter than ground 

 color; extreme costal edge of forewing, between middle and apical 

 fom-th, buff; a spot of pale color on termen; cUia grayish. Hindwing 

 grayish fuscous; cilia a shade lighter with a dark basal band. Legs 

 grayish with slight luster; distal ends of tibiae with ill-defined, buff 

 annulations. Abdomen grayish fuscous, somewhat lighter beneath; 

 posterior tip pale gray. 



Male genitalia (slide 10708): Harpe broad; costa short, strongly 

 sclerotized, distal end abruptly truncated; cucullus a fleshy, parallel- 

 sided lobe; sacculus elongate, strongly sclerotized, terminating in a 

 broadly triangular process. Anellus a broad crescent. Gnathos 

 curved, asymmetrical, about as long as uncus. Uncus long, wide, 

 curved ventrad. Vinculum longer than uncus and tegumen com- 

 bined; anterior edge cleft for sUghtly more than half the entire length. 

 Aedeagus long and slender, terminating in a gently curved hook. 



Type: Masatierra: El Camote, 600 m. (Dec. 28, 1954). 



Described from the unique type male. The type is not in good 

 condition and better material may necessitate altering the description. 

 The genitalia, however, are so striking and distinct that it will not be 

 difficult to determine additional material when it comes to hand. A 

 parallel development of the vinculum is seen in Femandocrambus 

 oxyechus but that of derelicta is even more exaggerated. 



This species belongs in the chiloma-glareola group but the vinculum 

 alone wUl separate derelicta from the other two. 



Juania parva, new species 



Figure 31 



Alar expanse 9 mm. 



Labial palpus white; second segment on outer side, and all third 

 segment except extreme tip, dark mouse gray. Antenna, head, thorax, 

 and ground color of forewing blackish fuscous; face sordid white; 

 thorax with considerable sordid-white scaling mixed; basal patch of 

 forewing black, outer edge oblique from costa to dorsum; dorsal half 

 of wing overlaid with sordid white interrupted by irregular, black, 

 transverse lines; in costal half of wing a few scattered sordid-white 

 scales; cilia light grayish fuscous, mixed with white, and with a white 

 spot just below apex and one on midtermen. Hindwing drab, some- 

 what darker toward outer margin; cilia grayish mixed with whitish 

 apically and banded with grayish fuscous. Abdomen gray, posterior 

 tip ocherous white. 



Male genitalia (slide 10706): Ventral edge of sacculus thickened; 

 distal end terminating in a large, strongly sclerotized hook. Costa 

 of harpe short, triangular. Cucullus small, slender, weak. Anellus 



