18 NORTH AMERICAN BUTTERFLIES. 



crimson centre. There is a fused, double black spot on the inner angle 

 of hind wing that contains two minute red spots. Expands, about 3.25. 

 Habitat, Alaska. 



26. PARNASSIUS EVERSMANNI. 



Eversmann's Mountain Butterfly. 



Differs from all other species of this genus which occur with us, in 

 being deep orange yellow, markings most nearly resemble those of P. 

 clodius but differ in having the second band within the marginal on fore 

 wing longer than the first, completely crossing the wing, and there is an 

 indication of an extra bar near base. Fig. 13, b. Beneath, the two red 

 spots seen on the hind wings above are repeated wath a white centre, 

 but those at the base of the wing are fused into a nearly continuous 

 patch. The black bar on the inner angle contains a nearly fused, dou- 

 ble spot with a white centre. Expands about 2.50. Habitat, Alaska 

 and Siberia. 



2Ga. Parnassius eversmanni thor H. Edw. Differs from the 

 type in being white instead of 3'ellow, the black on the base of the fore 

 Avings is broader and the bands are wider. The red spots are more nu- 

 merous, larger and darker. Expands 2. 1 0. Habitat, Alaska and Si- 

 beria. This and the type form are exceedingly rare. 



GENUS III. NEOPHASIA. 

 BLACK AND WHITE BUTTERFLIES. 



Size, medium. Colors, wliite rather conspicuously 

 marked with black. Wings, very thin. Head, thorax, and 

 body, slender. Type, N. menapia. ( Plate I, 3. ) 



27. NEOPHASIA MENAPIA Feld. 



Pinkish Butterfly. 



Pinkish-white, with upper margin of fore wings, narrowly, and up- 

 per half of outer margin more widely, edged with black. There is a spot 

 from the upper border crossing the end of the central cell, and the outer 

 margin encloses five oval Avhite spots. Body, black. Beneath, these 

 markings are repeated but rather more restricted, and there is a narrow 

 sub-marginal band of dusky on the hind wings, and the veins are nar- 

 rowly margined with it. Body, black. Expands 2.00 to 2.20. 



Habitat, California, Oregon, Washington Territory, Vancouver's 

 I land, and Colorado. 



