20 



terminal streaks on both sides of veins. Secondaries rather pale smoky white 

 with two rather distinct postmedian parallel dark lines and a terminal dark line. 

 Beneath much the color of secondaries above with two subterminal lines on 

 primaries corresponding to lines 4 and 5 of upper side; secondaries with a single 

 angled postmedian line and faint discal dot. Expanse 30 mm. 



Habitat: Type, Verdi, Nevada; Paratype, Marin Co., Calif. (Hy. Edw.) 

 2 $. Type, Coll. Barnes; Paratype, Coll. Am. Mus. N. H. 



The species is one of those obscure greenish ones which we 

 should have been inclined to associate with glaitcata if it had not been 

 for its shorter palpi and the differently shaped Uncus which is very 

 close to that of frigidata but considerably thicker and chunkier. 



An examination of the 2 S types of cliiricahitata Swett in the 

 Barnes Coll. shows that tliey belong to two distinct species; we limit 

 the name therefore to the type from the Chiricahua Mts., Ariz., which 

 has a very deeply bifurcate Uncus and will deal with the species in 

 more detail later under the long palpi section ; the other specimen from 

 the Huachuca Mts., Ariz, has a type of Uncus very similar to that of 

 the frigidata group and although the palpi are scarcely perceptibly 

 shorter than those of the true chiricahuata we prefer to deal with it 

 for the present in this section. Apart from the difference in the Uncus 

 the two species are so strikingly similar that with our limited material 

 we find it very difficult to point to any definite means of separation in 

 maculation ; the basal and median areas are rather paler in the present 

 species, the former being rather more extended than in chiricahuata; 

 the secondaries are paler basally and on the underside show no discal 

 dot; we describe the species in detail as follows: 



HVDRIOMENA ARIZONATA Sp. UOV. (PI. Ill, Fig. 10). 



Primaries gray, shaded and sprinkled with olivaceous-brown with paler 



basal and median spaces and heavy black cross-lines; line 1 (subbasal) strongly 



rounded outwardly from a point on costa near base almost to middle of inner 



margin ; band 2 purplish, irregular, with outward 



angles in cell and submedian fold, shaded on both 



sides with brownish-gray and with a heavy black 



mark just beyond it on inner margin; line 3 rather 



fine, somewhat irregularly oblique, with inward angle 



above inner margin ; median space paler, with fine 



discal dot, bordered outwardly by a very irregular 



Pjj, g line (line 4) which shows a prominent inward angle 



Uncus of H arhonaia opposite cell, two scallops in the interspaces of veins 



2-4 and is then bent strongly backward reaching the 



inner margin close to line 3 and narrowing the median space between vein 2 



and inner margin to half its width at costa ; a very distinct submarginal purplish 



