1854 REPORT OF THE CHIEF OF ENGINEERS. 



I was greatly surprised to find this splendid insect in the present collection, it hav 

 ing never before been received from Colorado ; the single original (male) type was 

 said to have been captured in the Bitter Root Mountains, which divide Montana and 

 Idaho ; subsequently the expedition in 1871, under Lieutenant Wheeler, brought in 

 five males and two females from Arizona, and in 1877 Mr. Neumoegen, of New York, 

 received a number of both sexes from a correspondent in inner Arizona. 



The present two examples from Colorado differ notably from all those from Arizona 

 in the following particulars: On under surface, the red color of primaries is darker, and 

 covers evenly the whole wing except toward and at the apex ; on the secondaries, the 

 Avhole space interior to the second of the two outer rows of silver spots, which in the 

 Arizona examples is powdered with grayish-green, is deep reddish-brown, nearly of the 

 same color as in the female of Aphrodite or the male of Leto; they are larger than most 

 of those I have seen from Arizona. On the upper side it presents no differences. I 

 have always contended that Xokotni* was a pale, abnormal form of Cybele, of which 

 we have so many other like instances in other species from the dry salt regions of Utah 

 and Arizona, and those intermediate examples from Colorado, with their dark reddish 

 undersides, seem to strengthen my opinion. I can but regret that no males were cap 

 tured (unless the following be really its male), as I consider this by far the most inter 

 esting insect in tin; whole collection. 



Avgynnis Cybcle. 



Aryynnis Cybele. FAHRICIXS (Pap. C 1 .). Systema Entomologica, p. .&quot;&amp;gt;16 (177.&quot;)); Eiit. Svst. iii. p. 

 145 (1793). HERB8T, Xatursyst. Schmet-t. ix, p. 178. t. 255 (1798). 



J^rgynnift Cybele. Bur,., Lee. L ep. Am. Sept. p. 151. t. 45 (IKW). MORRIS. Syn. Lep. N. Am. 

 p. 42 (1862). EDWARDS (\V. H.), Butt. X. Am. i, t. 2. Avg. (1868). STRKCKER, Syn. Cata 

 logue, p. Ill (1878). 



Papilio Daphnis, CRAMKU, Pap. Ex. i, t. 57 (1779). 



One male at the Rio Blanco, near its headwaters. This expands 24 inches; the pri 

 maries are more elongate; and pointed apieally than in the Eastern examples, and the 

 two black lines that iorm the- border or upper surface of wings a re diffuse, nearly filling 

 the space between them with blackish ; the other of the black markings are all nar 

 rower ; the ground-color above and the under surface generally are precisely as in 

 Eastern examples. 



I must confess to considerable astonishment at receiving this insect from Colorado, 

 it being the first example known to have been taken so far west, and I am strongly 

 inclined to the belief that it is the male of the above-described form of Xokomiti. 



A ) &amp;lt;jy 11 nix A t la n Us. 



A fflynnis Atlantis. EDWARDS (W. H.), Proceedings of the Academy of Natural Sciences of 

 Philadelphia, p. 54 (1862); Butt. N. Am. i, t. 5, Arg. (1869). STRKCKKR, Svn. Catalogue p. 

 112 (1878). 



A number of examples, male and female, taken July 25, at Weeminuche Pass, head 

 of Rio tie los JMnos, and one male, August 1, in the valley of Upper San Juan River* 

 These, are all somewhat paler beneath than the more Northern and Eastern examples. 



A t ltyn &quot; w Myrina. 



Argynnis Myrina, CRAMER (Pap. IT). Papillons Exotiques, ii. t. 189 (1779). GODART. Eric. 



Meth. p. 268, 806, ix (1819). SAY. American Entomology, iii. t. 40 (1828). BOISUUVAL &. 



LECONTK. Lep. Am. Sept. p. 155. t. 45 (1833). KIRHY, Fauna Americana-Boreali, iv, p. 290 



(1837). HARRIS, Insects Inj. Veg. 3d ed. p. 286, f. 112 (1862). MORRIS, Svn. Lep. N. Am. 



p. W (1862). STRKCKKR. Syn. Catalogue, p. 115 (1878). 

 Papilio Myrinus, HERMIT, Xatursyst. Schmett. ix, p. 178, t. 255 (1798). 



One male taken July 26, at Upper Weeminuche Creek (a tributary of the Rio Piedra) 

 does not differ from those from other parts of the United States and British Columbia. 



Argyn-ms KneinMld, nov. sp. 



Female, size and shape of A. Epilhore Boisd. On upper surface not quite as dark 

 as in that species, the black markings not as heavy, and there is no dark suffusion at 

 the basal parts; the under surface much paler than in Bdlona, Epithore, or any of the 

 allied species, though of the same style of ornamentation; the broad irregular mesial 

 band and basal spots of secondaries are of a uniform clear, rather pale yellow, and all 

 save the basal spot, at costa are edged with a sharp dark brown line; this is the species 

 which 1 have cited in my catalogue on p. 117 as licllona var., there described from a 

 single example received from Utah. The reception of other examples since from Ari 

 zona as well as the present ones from the Rio Florida Colorado, all of which examples 

 are remarkably ctmstanf, has led me to the conclusion that this is a form entitled to 

 .specific distinction. 



