436 



Although described as a subspecies of subochraceiis, australis is 

 very distinct from that insect, and is readily distinguished by the evenly 

 gray under surface of the primaries. The absence of gray from the 

 upper surface of these wings separates it from its nearest ally, costatus. 



Nothing is known of the early stages. 



49. OlDAEMATOPHORUS COSTATUS n. sp. PI. XLVII, fig. 14. PI. LIII, 

 fig. 10, 11. 



Head pale grayish-yellow, paler between antennae. Antennae and palpi 

 more whitish, the latter moderate, slender, oblique, with a dark streak on out- 

 side of third joint and tip of second. Thorax and abdomen pale grayish yellow, 

 the latter with a faint brown dorsal line. Legs similar, the first two pairs, 

 including tarsi, shaded with gray inside. 



Primaries yellowish-white, shaded over all with gray, becoming darker and 

 more brownish in costal region. Extreme costa pale grayish yellow. Fringes 

 appro-ximately concolorous. Secondaries and their fringes brownish gray, 

 neither conspicuously darker nor paler than primaries. Expanse 30-33 mm. 



Described from seven specimens from the Monachee Meadows, Tulare 

 Co., Cal., 8000 ft., July 8-14. 



Holotype S , allotype and 3 paratypcs, 1 (J & 2 9 , coll. Barnes. 



Paratype 9 U. S. N. M. No. 23481. 



Paratype 9 coll. Meyrick. 



We have also a specimen from Vineyard, Utah, taken in August. 



Costatus is very closely related to australis, and we are unable to 

 find superficial characters to separate it with the exception of the 

 grayish primaries, generally darker color, and the stripe on the palpi. 

 Our series is not sufficient to indicate whether or not pale specimens 

 occur which might be confused with Grinnell's species. The genitalia 

 offer an ultimate character in the form of the right valve. 



50. OlDAEMATOPHORUS FALSUS n. Sp. PI. XLVI, fig. 17. PI. LIV, 



fig. 7. 



Entirely chalky white. Palpi rather long, slender, oblique. Primaries with 

 a faint brownish shade in the costal region and sometimes with the entire sur- 

 face underlain with brownish gray, rarely dark. Secondaries tinned with 

 brownish gray, rather dark in the darker examples. All fringes concolorous. 

 Expanse 22-25.5 mm. 



Described from three specimens from Ariz. 



Holotype 5 , Tucson, and allotype, Christmas, Gila Co., coll. Barnes. 



Paratype 3, Christmas, Gila Co., U. S. N. M. No. 23482. 



We have also two specimens in rather poor condition from Yuma 

 Co., one dated March, the two others from Christmas. The Yuma 



