95 



Prionoxystus ROBiNLE race mixtus nov. 



1911, B. & McD., Contr. Nat. Hist. Lcp. N. A., I, #1, 34, pi. VI, f. 10 as 

 9 robiniac, Prionoxystus. 



Distinguished from P. robinia: by the generally paler aspect of both 

 primaries and secondaries. While the types are restricted to six females from 

 Colorado; the Holotype apparently having been figured by B. & McD., 1911; 

 the name is intended to cover the paler western forms of the species. The 

 Colorado females are selected as an extreme; and to this form the name must 

 apply in case of dispute; altho females from Nevada tend to be still paler — but 

 these are considered intermediate to the race from California described herein. 

 The males of mixtus apparently have the black restricted to the extreme basal 

 costal, and outer margins of the secondaries. 



Type localities and number and sexes of types: Holotype 9, Glenwood 

 Springs, Colo., 16-23 July; 4 9 Paratypes, Glenwood Springs, Colo., June, 16-23 

 July (2), 24-30 July; 1 9 Paratype, Denver, Colo., no date. 



Prionoxystus robinia race subnigrus nov. 



Distinguished from robinia by its darker appearance; similar to sabolicus 

 Stkr. but even darker ; by the black on the secondaries of the male being re- 

 stricted to the basal, costal and outer margins of the secondaries and the blackish 

 secondaries of the females with a faint yellowish tint. 



While the types are restricted in case of dispute; the name is intended to 

 cover all of the dark southwestern forms. 



Type locality: Paradise, Cochise Co., Ariz. 



Number and sexes of types: Holotype i , June ; AUotj-pc 9 May ; 2 9 

 Paratypes, May, June. 



Prionoxystus robinia race flavotinctus nov. 



Distinguished from robinitr by being paler in color ; as in race mixfns; the 

 males, however, with the black markings on the secondaries intermediate in 

 amount to the typical robinicc but with the inner angle rounded approaching 

 the female in this respect. The female has a considerable yelloAvish tinge to 

 the secondaries stronger than in race subnigrus and thus approaches quercus 

 Ehrm. 



Type locality: Olancha, Inyo Co., Calif. 



Number and sexes of types: Holotype i, 24-30 June; Allotype 9, 24-30 

 June; 2^19 Paratypes, 24-30 June. 



The named races may be separated as follows : 



I. Secondaries of males with the black basal area extending to, or 

 nearly to, the inner angle, 

 A. Secondaries of females usually not heavily obscured by 



black — (eastern) robinim 



