408 ARGYNNIS. By Dr. Th. Lehmann. 



dusted with greyish green, is here deep fiilvous, almost as in ^. aphrodite $. As in nokomis, notliing is known 

 coerules- of the earlier stages. — coerulescens Holl. is a peculiar form from northern Mexico, discovered in 1899 by 

 cens. Q Tyler Town SEND, and described by Dr. Holland as a variety of A. nitocris; Prof. Smith, however, upon 

 comparing the genitals, regards it as a separate species, c? differs but shghtly from t_>'pical nitocris <^(^ in ha- 

 ving the inner half of both wings more strongly obscured, and the black markings of the upper surface moie 

 confluescent ; on the under surface the base and inner margin of the forew ing deeper red, the black markings 

 heavier. But the $ differs from typical nitocris $$to such an extent that a casual observer might take them 

 at first for diana $, on account of the gorgeous blue colouring of the submarginal band of spots on both 

 wings. Upper surface with base and median area deep black, with a faint violet lustre. On the under surface 

 the markings resemble those of normal nitocris, but the forewings are darker red. Hindwings M'ith the inner 

 half to the median row of silvery spots deep olive green, the submarginal band yellowish -green; other speci- 

 mens have the inner half of the under surface of the hindwings deep chestnut-brown; but in every case 

 the colouring of the light submarginal band of spots is more or less greenish, never honey-yellow as in normal 

 nitocris. In size it approaches nitocris. coerulescens is not at all scarce on the Ujjper Piedras Verdes, in 

 the Sierra Madre (State of Chihuahua, Mexico), in September at elevations of from 7000— 7200 ft. — As var. 

 nitrocaeru- nitrocaerulea Cocherell a form was described from southern New Mexico, forming in some respects a transition 

 lea. ffODi nitocris to Holland's coerulescens. The S differs above but slightly from typical nitocris ^i^; but under- 

 neath the basal area of the hindwing is more cinnamon-red, strongly contrasting from the $. $ above with 

 the inner half deeply purplish-black, the quadrate submarginal sjiots very pale yellowish, faintly suffused with 

 pinkish. Under surface : Terminal band light green, the subterminal band of spots pale yellow, the base 

 of both wings very dark, with purplish lustre. The type was taken at Beulah, Sapello Cafion (New Mexico) 

 rufesccns. in August. But there exist in New Mexico of this form also $$ which are fulvous : ab. $ rufescens Cock. — On 

 the earlier stages Prof. Skinner (Ent. News 1907, p. 318) has given us the following notes; Eggs before hatch- 

 ing reddish, of the same structure as those of other known species; they were deposited on Aug. 24th.; the 

 caterpillars \\'hich hatched on Sept. 7th., were at first pale greenish-yeUow, with 1 1 ro\\'s of green tubercles, those 

 at the sides covered with long hair; head black. After the first moult there appeared a number of glossy 

 black spines, provided with thick dull black hair. Body yeUowish-brown, covered with numerous single bristles. 

 Nothing is known of their further development. 



leto. A. leto -Be/w (86 b) is closely allied to A. c.?/foefe with which it was identified by Boisditval; but it might 



be just as \\ell taken for a separate species as nokomis. leto replaces cyhele on the Pacific coast, from California 

 to Washington, and was observed by Geddes as far north as Fort Macleod in the Canadian Province of Alberta. 

 ^ above not unlike the S of nokomis and cijhele. but the ground-colour duller and paler fulvous, the basal area 

 much more obscured, the black markings finer. The spots in the submarginal rows on both wings are separated 

 from each other and from the inner line. On the forewing the trans-discal spots rather large, roundish, followed 

 by a zigzag-shaped broken band of spots. Under surface of the forewings bright fulvous, the costal margin 

 and distal border buff; veins and base shaded with brown; the marldngs of the upper surface are repeated 

 underneath, the marginal spots not silvered. Hindwings with pale straw-yellow submarginal band, as in cyhele; 

 the silver spots very distinct, but the base of the costa and the abdominal margin but slightly, if at all 

 silvered. $ marked like (^, but the ground-colour is pale straw-yellow, strongly contrasting with the chocolate 

 or deep black-brown markings, especially in the basal area of both wings, where the spots confluesce so com- 

 pletely that the inner half appears uniformly brown-black. Beneath it resembles the ,5, ^\'ith basal area and 

 inner margin reddish-brown; bivt the dark markings are deeper black, the light portions paler. Expanse: J 

 charlolti. 2,4 — 3,0", $ 3,0 — 3,3". — charlotti Barnes refers to a form from Colorado, distinguished in the $ by the 

 uncommonly broad yellow band on the under surface of the hindwings. — We have no knowledge of its 

 life-history, leto is found from Central California northward to AA'ashington and Alberta. Wasliington speci- 

 mens differ from the southern form in the darker colouring of the base of the hindwing. The type of leto, 

 like all the other types of Behr's, was distroyed in the great earthquake of San Francisco. 



cybele. A. cybele F. (= daphnis (Jr., baal Streck.) (8.5 c ?, d (^). (J above resembles that of the preceding spe- 



cies and of leto; the fidvous ground-colour shaded with brown at the base, and fiirely dusted with blackish in 

 both sexes, especially on the forewing. The submarginal crescents on the forewing are joining, but on the hind- 

 wing detached. Under surface of forewings yellowish-brown, the apical space yellowish, enclosing a brown patcli on 

 the costal margin. Termen near apex bright brown, towards the inner angle yellowish ; the anterior submarginal and 

 subapical spots brightly silvered. The black markings of the under surface are more faintly repeated underneath. 

 The hindwing has the basal two thirds to the submarginal row red-brown, more or less mottled with yellow. Distal 

 margin brown, shading into yellowish towards the anal angle. All the silvery spots mucli larger than in leto. 

 The pale brownish-yellow submarginal band between the outer rows of spots is never obliterated by being invad- 

 ed by the darker ground-colour of the basal and marginal tracts. Abdominal margin slightly sUvered. $ differs 



