192 



Closely allied to T. oviplagalis Wlk., and most readily disting- 

 uished from that species by the paler color, and the fact that the discal 

 patch on the secondaries of the males is not as intensely black. The 

 pale median line on the under side of the secondaries appears nearer 

 the center than in the eastern species. 



Type localities and number and sexes of types: Holotype $ ; Allotype 

 9 ; 2 S , 2 ? , Paratypes, Redington, Ariz. ; 1 $ , 6 9 , Paratypes Southern 

 Arizona ; 1 $ , Paratype, Arizona ; no other data. 



CRAMBINAE 



Hemiplatvtes gen. nov. 



Type H. epia Dyar. 



Proboscis vestigial ; palpi porrect, extending about three times the length 

 oi the head and thickly clothed with hair ; maxillary palpi triangularly scaled ; 

 frons without a prominence, nearly flat between the eyes ; antennae of male 

 laminate ; of female, simple ; tibial spurs moderate ; fore wing with apex acute 

 in male; somewhat more rounded in female; vein 3 from before angle of cell, 

 4 and 5 well separated at origin, 7 from below upper angle, 10 free, 11 closely 

 approaching 12 and joined to it by a cross vein. Hind wing with vein 3 from 

 before angle of cell, 4 from angle, 5 from about one-third of the discocellulars 

 above angle, 6 and 7 connate from upper angle, 7 anastomosing with 8 for 

 about half way to the apex. 



Hemiplatytes is apparently an intermediate genus between Platytes 

 and Diatraea, most closely approached by the oriental genus Ubida. 

 Besides possessing a unique venation, it differs from Diatraea and 

 Chilo in possessing no frontal prominence ; and from Platytes in pos- 

 sessing a vestigial proboscis. From Ubida it differs in habitus, wing- 

 shape, venation, and antennae in both sexes. 



Hemiplatytes epia Dyar. 



1912, Dyar, First Rept. Laguna Marine Lab., p. 165, Diatraea. 



1917, B. & McD, Check List, p. 141, No. 5434, Chilo. 



damon B. & McD. 



1918, B. & McD., Contr. N. H. Lep. N. A.. IV, (2), 172, pi. XXIV, ff. 

 13-14, Platytes. 



A figure of the type of epia so matched the types of damon that 

 the authors submitted specimens to Mr. Carl Heinrich for compari- 

 son. The "authors are informed that one of the female paratypes of 

 damon is a good match for the type of epia, which is a female. 



