90 PROCEEDINGS OF THE NATIONAL MUSEUM Vol. 117 



fluent with apical fuscous shading, cilia avellaneous, speckled with 

 fuscous. Hindwing brownish buff with some fuscous suffusion; cilia 

 brownish buff with a darker subbasal line. Fore- and midlegs fuscous 

 with buff annulations; hindleg buff suffused with fuscous. Abdomen 

 pale buff with fuscous suffusion above and indistinct row of fuscous 

 spots laterally beneath. 



Male genitalia (slide 10591): Dorsal element of harpe twice as long 

 as ventral element, slender, slightly dilated distally; ventral element 

 slender, pointed. Gnathos a strong hook, straightened somewhat and 

 compressed distally. Uncus produced anteriorly, densely clothed 

 with hairlike setae. Vinculum somewhat produced anteriorly, 

 rounded; posterior edge fleshy, clothed with fine setae. Aedeagus 

 stout, curved, nearly as long as tegumen, unarmed. 



Type: Masatierra: Bahia Cumberland (Jan. 7, 1955). 



Described from the unique male type. 



Family Momphidae 



Anchimotnpha, new genus 



Type-species: Anchimompha melaleuca, new species. 



Antenna about half the length of forewing, somewhat compressed, 

 sparsely ciliate; basal segment without pecten. Labial palpus slightly 

 recurved; second and third segments about equal in length; second 

 segment roughened beneath; third segment acute. Head smooth, 

 ocellus absent; tongue well developed. Hind tibia clothed above with 

 stiff hairlike scales. Forewing smooth, lanceolate, apex long pointed; 

 11 veins; Ic strongly preserved at margin; 2, 3, 4 well separated; 

 4 and 5 approximate; 7 and 8 coincident; 6 and 7+8 weakly stalked; 

 9 approximate to stalk of 6 and 7+8; 11 from beyond middle of cell. 

 Hindwing linear-lanceolate, with 8 veins; 2 remote from 3; 3, 4, 5 

 about equidistant; 6 and 7 parallel. Abdominal tergites spined. 



Female genitalia normal for family, with two sign a. 



Anchimompha is closely related to Mompha as indicated by the 

 female genitalia, but differs from it by the coincident veins 7 and 8 

 and sharply pointed apex of the forewing. Both genera have vein Ic 

 present in the forewing and the venation of the hindwings is almost 

 identical. Although Anchimompha exhibits no antennal pecten as 

 found in Mompha the fact remains that a pecten may be reduced to 

 one scale and is easily lost. Fresh specimens might show this charac- 

 ter, but in the specimen at hand there is no evidence of a pecten. In 

 my key this genus separates on the alternative "basal segment of 

 antenna without pecten," but because of the fugitive nature of this 

 character it must be used with caution. 



