204 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iie 



directed toward sacculus. Anellus V-shaped with prominent lateral 

 lobes. Aedeagus short, stout, terminating in a beaklike process. 

 Vinculmn a broad sclerotized band. Transtilla indicated by sparsely 

 setaceous membrane. Gnathos a finely spined oval knob. Socii 

 indicated by a few setae. Uncus elongate, incised posteriorly. 



Slides examined: 2crc?, JFGC 10946, 11109. 



Female genitalia: Unknown. 



Holotype: Peru, Tingo Maria (Nov. 24, 1949, H. A. Allard). USNM 

 64992. 



Described from the type male and one male paratype with iden- 

 tical data. 



The two species literatella and acritomorpho are similar but 

 acriiomorpha lacks the dark longitudinal streak of the forewing 

 found in literatella. 



All of the species of Palinorsa are related closely and one wonders 

 if one is dealing with a "cline" or incipient species. All males possess 

 a short, stout aedeagus terminating in a beaklike process, and all 

 specimens have a pan' of small pale spots opposite the base of vein 

 2 of forewing. The genitalia appear to present substantial char- 

 acters for the separation of the species, but the paucity of material is 

 a serious handicap to proper interpretation. 



Acknowledgments 



The photographs for the paper were made by Mr. Jack Scott, staff 

 photographer. The drawings were made by Mr. Andre Pizzini. 



us. GOVERNMENT PRINTING OFFICE:1964 



