43 



from near angle of cell, 6 (M^) from upper angle, 9 (R3) from 10 (R^) anas- 

 tomosing with 8 (R^) and 7 (R^) to form the areole, 11 (R^) from cell. Sec- 

 ondaries : veins 3 (Cu^) and 4 (M3) stalked from angle of cell, 5 (MJ prac- 

 tically fully developed and from more than half-way below the middle of the 

 discocellulars, 6, 7, (M^, R) long-stalked from upper angle, 8 (Sc) anastomosing 

 with cell near base only. 



This genus, by the frontal structure is apparently closely allied 

 to Redingtonia, B. & McD. and Azenia, Grt., and intermediate by the 

 development of the claw-like projection on the fore tibia; but the vein- 

 ation is so nearly typically quadrified that following Sir George Hamp- 

 son's classification it must be placed within the Erastrianae. With this 

 same classification in mind, Azenia, Grt., undoubtedly belongs in the 

 Acronyctinae ; and Redingtonia, B. & McD., is an intermediate, perhaps 

 best left in its present place, temporarily, while Sexserrata, gen nov. 

 is placed between Exyra, Grt., and Neotarache, gen nov. 



The following generic order is observed in the Barnes Collection : 



Exyra, Grt. 



Sexserrata, gen nov. 



Neotarache, gen. nov. 



Grotellaforma, gen. nov. 



Homolagoa, B. & McD. 



Phoenicophanta, Hamp. 



Xanthoptera, Gn. 



Sexserrata hampsoni, sp. nov. 



Palpi, vertex, thorax, primaries, and ground color of secondaries concolor- 

 ously satiny-white, the latter tinged with fuscous toward the apex. Fringes: 

 white. Abdomen : creamy-tan above. Beneath : ground color white, the disc of 

 the primaries suffused with pale-creamy-fuscous, with dots of the same color 

 faintly checkering the fringes. A slightly paler discal spot barely distinguish- 

 able. Secondaries, white, their fringes showing a trace of checkering at the ends 

 of the veins in the apical region. Thorax: white. Legs: white, marked with 

 some brown on the tarsi and the fore tibiae. Abdomen : cream-color. Sexes : 

 identical. 



Expanse : about 23 mm. 



Type locality: Dixieland, Imperial Co., Calif., O. C. Poling, Collector. 



Number and sexes of types: $ Holotype, April 15-30; $ Allotype, May 

 1-15 ; 2 5 Paratypes, April 15-30, all 1922. 



