ART. 19. MOTHS OF THE GENUS DIATRAEA DYAR AND HEUSTRICH 29 



base and abruptly narrowed at middle where costa is sharply emar- 

 ginate to the apex; costa finely spined on basal half. Uncus mod- 

 erately broad, with apex bluntly rounded; a somewhat broadened 

 hook. Gnathos unspined. Anellus with produced lateral arms; 

 juxta detached. 



Female genitalia with ductus bursae unchitinized except slightly 

 at genital opening. Bursa moderately sized; unchitinized; signum 

 absent. Ovipositor and chitinous supporting rods normal. 



Abdomen of male without lateral tufts on second segment. 



Genotype. — Diatraea epia Dyar. 



HEMIPLATYTES EPIA (Dyar) 



Figures 30, 82 



Diatraea epia Dyar, First Rep. Laguna Marine Lab., 1912, p. 165. 



Chilo epia (Dyar) Barnes and McDunnough, List Lepid. Bor. Amer., No. 



5434, 1917. 

 Platytes dainon Barnes and McDxjnicough, Cont. Nat. Hist. Lepid. N, 



Amer., vol. 4, 1918, p. 172. 



A small species, the male dark brown with nearly black hind wings ; 

 the female whitish with only a trace of the brown markings and 

 whitish hind wings. A white marking at end of cell, with detached 

 rays beyond, persists in both sexes. 



Expcmse. — Male, 16 mm. ; female, 18-21 mm. 



Genitalia figured from specimens from San Diego, Calif. (K. R. 

 Coolidge, No. 199). 



Specimens before us from the coastal region of southern California. 



Life history unknown. 



Types. — In National Collection (epia) ; collection Barnes {damon). 



Type localities. — Laguna Beach, Calif, {epia) ; San Diego, Calif. 

 {damon). 



XANTHOPHERNE, new genus 



Front gently bulging and smooth, or strongly cone-shaped and 

 tuberculate. No ocelli. Labial palpi porrect, short, of the same 

 length as the maxillary palpi, which are heavily dilated with scales. 

 Antennae thickened, shortly squarely serrate and pubescent in the 

 male; filiform in the female. Fore wing with vein 3 from before 

 angle of cell; 4 and 5 approximate from the angle; 6 shortly below 

 apex of cell; 7 from apex; 8-9 stalked from before the rounded 

 apex; 10 from the cell near stalk of 8-9; 11 obliquely anastomosing 

 with 12. Hind wing with 4-5 connate from the sharp angle of cell ; 

 6 from apex of cell; 7 leaving apex of cell for a rather short anas- 

 tomosis with 8. 



Male genitalia with vinculum rounded. Harpe undivided, elon- 

 gately triangular. Uncus laterally compressed and greatly devel- 



