THE LEPIDOPTEROUS GENUS PAMPHILA. 349 



4. Pamphila Colorado nov. sp. 

 Pl. X, cf Fig. 18, ? Figs. 16, 17. Fi.. xi, Figs. 1, 2. 



Upon its upper surface this species differs from P. Manitoha, with which it agrees in size, 

 in scarcely any other particulars than the rather darker bordering in the males, and the 

 more conspicuous transverse mesial band of the hind wings in the females. Beneath, the 

 ground color varies from olivaceous to griseous green, and the mesial belt of the hind wings 

 is pecidiar for the manner in which it diminishes in width where it bends at the middle ; it 

 is apparently made up of three patches : a lozenge-shajjed patch in the lower subcostal in- 

 terspace ; a rather broad belt, nearly uniform in width, but irregular in outline, crossing the 

 median and part of the medio-submedian interspaces ; and a similar belt, but only half as 

 wide, crossing the interspace beyond the cell, its outer limit on a line with the outer limit of 

 the previously mentioned belt, and its upper interior angle reaching toward the tip of the 

 lozenge-shaped patch ; these spots are generally bordered narrowly with blackish. In the 

 female the spots are generally larger, more frequently parted, less regularly disposed, and 

 occasionally accompanied by a spot in the upper subcostal interspace. Upper organ rather 

 small, strongly arched, sulcate aljove posteriorly, the centrum, hook and lateral arms almost 

 exactly as in P. Manitoha. Clasps not large, yet extending as far as the upper organ, fully 

 twice as long as broad, tapering pretty regularly, the jDOsterior margin roundly angulated, 

 the two teeth scarcely separated by a very deep, equal, rounded excision, the preapical 

 sHghtly the larger and more incurved, the apical followed within anteriorly l^y a rather 

 stout but low lamina, furnished with one or two small tubercular dentations ojjposite the 

 preapical tooth. 



This species has been taken in Colorado, about the Georgetown and South Park Roads 

 by Mr. Mead ; and in Arizona, by Lieut. Wheeler's expedition. 



5. Pamphila Juba. 



Pl. X, d- Fig. 19, 9 Fig. 20. Pl. xi. Figs. 5, 6. 



Pamphila Juba Scudd. ! Syst. Rev. Am. Butt., 5G. 



Mesjjeria comma Boisd. ! Ann. Soc. Ent. Fr., [2] x, -313 (nee Linne). 



This species of Pamphila is larger than any others, with the exception of P. Ottoe, which 

 scarcely exceeds it, but on the upper surfice resembles closely the j^receding, differing from 

 it in having the mesial band of the under side of the hind wings more conspicuous upon 

 the upper surface of the males than in P. Colorado. The females are pecuhar for their 

 pale appearance, due to three causes : a really paler tint to the tawny parts of the wing, in 

 which respect they reseml)le the Oregon specimens of P. Nevada ; a narrow dark outer 

 border to the wings ; and the much broader mesial belt of the hind wings ; more than in 

 any other species the interior edge of the outer margin of the fore wings of the female is 

 very crenate, the brighter ground following the nervules nearly to the margin of the wing. 

 while at the base of the lower median interspace and in the interspace below it are a 

 couple of continuous or nearly continuous dark brown patches resembling those which so 

 often accompany the inferior edge of the discal patch of the males in this group of Urbi- 

 colte. Beneath they are peculiar in having the mesial band of the hind wing broader than 

 in any other s^^ecies, and rather more uniform than usual, the spots of which it is composed 



MEMOIRS BOST. SOC. KAT. HIST. TOL. n. 88 



