80 



In order to prevent the misidentification of the occasional white 

 form of this species and because of the usual custom of naming im- 

 maculate forms the authors apply the name 



Leucocnemis variabilis form alba nov. 



Immaculate and practically pure white specimens. 



Type localities and number and sex of types: Holotype $, 24-30 June; 

 Paratypes: 1 i, 16-23; 1 S, 24-30, June, all Paratypes, of L. variabilis; 2 $, 

 24-30 June; 1 S no date, all the foregoing from Olancha, Inyo Co., Calif., in 

 Barnes Collection; 1 $ Paratype from C. A. Hill labeled "July 1. 1922, Round 

 Valley, Inyo Co., Cal. 450O ft., at light" (O. C. Poling), in Mr. Hill's Collection. 



Prodenia ornithogalli Gn. 



1852, Gn., Spec. Gen., V, Noct., I, 163, Prodenia. 



lineatclla Harv. 



1875, Harv., Bull. BuflF. Soc. Nat. Sci., II, 275, Prodenia. 



form EUDioPTA Gn. 



1852, Gti., Spec. Gen., V, Noct., I, 164, Prodenia. 



flavimedia Harv. 



1875, Harv., Bull. Buff. Soc. Nat. Sci., II, 274, Prodenia. 



commelincF Riley, nee S. & A. 



1871, Riley, 3rd Rcpt. Ins. Mo., p. 113, f. 48c, Prodenia. 



A common, decidedly variable, species ; the bibliography of which 

 would cover pages. 



While in Mississippi the junior author noticed that both ornitho- 

 galli and eudiopta were taken together at light, sugar and on flowers ; 

 and that intermediates occurred. No larval difference could be found. 

 The genitalia are identical. 



Prodenia praefica Grt. 



1875, Grt., Can. Ent., VII, 44, Prodenin. 



This is the Pacific Coast species or race which in California takes 

 the place of P. ornithogalli. The insect is somewhat heavier bodied 

 and slightly broader winged than P. ornithogalli. The only genitalic 

 difference seems to be in the clasper which in this species extends to, 

 or nearly to, the edge of the valve; about one-quarter longer than in 

 P. ornithogalli. 



