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PROCEEDINGS OF THE NATIONAL MUSEUM 



Vol. 117 



forewing in all of the Bahia Cumberland examples: one specimen has 

 the forewing almost entirely sayal brown with fuscous prominent on 

 only the basal half of costa, the apex and in the terminal area. Four 

 of the females show no trace of the pale median band, the entire area 

 being fuscous; in one male the dorsal half of the light transverse band 

 has been similarly replaced with fuscous. 



The proportion of sexes is also a matter of interest. In the sample 

 from Masafuera the males outnumber the females by 25 to 1 but in 

 the Masatierra series the sexes are evenly divided. It appears that 

 the date of sampling is a factor here. The Masafuera specimens were 

 taken in January but all of those from Masatierra were caught from 

 mid-February to mid-March. 



Genus Mnesictena Meyrick 



Mnesictena tetragramma, new species 



FiauRK 53 



Alar expanse 17-18 mm. 



Labial palpus cream buff beneath ; second segment brick red above 

 the cream-buff lower part; third segment black with a few brick-red 

 scales mixed. Antenna blackish fuscous with a few scattered pale 

 scales in outer half. Head brick red with tawny scales posteriorly. 

 Thorax brick red anteriorly, the remainder blackish fuscous with 



Figure 53.' — Mnesictena tetragramma, new species: 53, ventral view of male genitalia with 

 left harpe and aedeagus removed; 53a, aedeagus. 



