HENRY SKINNER 



215 



Distribution. — I have only seen this species from Colorado, New 

 Mexico and Arizona. It appears to be two brooded. 



Records. — Chimney Gulch, Golden, Colorado, IV, V, (Oslar) ; Platte 

 Canyon, Colorado, VIII (Oslar) ; Southwestern Colorado, (Tolman) ; Mt. 

 Graham, Arizona (Morrison); Carr. Canyon, Arizona, VIII (Skinner); Reef, 

 Arizona, IX, (Biederman) ; Jemez Springs, New Mexico, VI, 13 to 26, (Wood- 

 gate). 



Thanaos pacuvius Lintner. 



Thanaos scudderi new species 



Male. — Expanse 9.5, 12.5, 13.5 mm. One of the specimens is probably 

 abnormally small (9.5 mm). Upperside. Primaries with the usual four 

 costo-apical vitreous spots, and below these a single spot and another at 

 the end of the discoidal cell. The markings are otherwise essentially those 

 of pacuvius and clitus except that the latter two usually have two spots 

 below the costal four. The secondaries are dark brown with white fringes. 

 The undersides of the wings are marked in the usual way and present no 

 marked difference from the allied species. The genitalia show that this is a 

 very distinct species and readily separated from the others. A large series 

 may show good maculation characters to separate it from pacuvius. 



Described from five specimens taken by H. K. Morrison, at 

 Fort Grant, Arizona in 1883.^ 



^ "Morrison's sets, when sent abroad, were usually labelled 'Sonora,' 

 and have thus been included in the Biologia Centrali-Americana. When 

 sent to American workers, however, they are labelled 'Arizona.' They 

 were probably all made, however, in the Graham Mountains, near Ft. 

 Grant (Arizona), and above Ft. Huachuca.'.' Schwarz, Proc. Ent. Soc. 

 Wash., iv, 209, 1897. 



TR.\NS. AM. ENT. SOC, XL, 



