MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 143 



than the latter. Thorax all \-ellow, as in 9 . with no orange :streal\s; abdomen orange, distinctly 

 banded with yellow; tips yellowish. 



Fore wings of the same shape as in C. regallx, base of wing yellow, with two long lobes; 

 the discal blotches inclosed in the broad, large yellow band, which otherwise is as in 9 , extend- 

 ing to costa very near the apex. Five unequal dull orange-brown discal blotches, and bej^ond is an 

 oblique series of six intervenular blotches, A submarginal, scalloped, dark orange line, not 

 reaching the apex; this line not present in C. regaltn. Veins orange. 



Hind wings very different from the other species in being entirely j-ellow, except two 

 unequal reddish blotches near the base, and an outer broad, diffuse, reddish shade beginning just 

 before the apex and ending distinctly on the inner angle: in 9 the wing is nearly all reddish, 

 with a submarginal zigzag line. 



Under side of wings nearly all yellow; a large, squarish, reddish discal blotch on the fore 

 wings, a more irregular diffuse blotch halfway between the discal square and apex; outer edge 

 of the wing gray orange-red, containing a yellow ;j-7-scalloped line. Hind wings all yellow, 

 except the discal spot and the narrow, wavy extradiscal line. For the venation see PI. LVIII, 

 figs. 4, Aid. 



Expanse of fore wings, S 8S.5 mm.; length of a fore wing, $ ?>'.) nun.: breadth of a fore 

 wing, S ISmm. ; length of hind wing, 2 25 mm.; breadth of hind wing, S 18 mm. 



No locality. In the Edwards collection of the American Museum of Natural History. 

 I have examined 3 S and 1 9 in the Cambridge Museum, and find that they exactly agree 

 with Boisduval's description. 



One 9 variety, and perhaps laocoon Cramer. A large species, with broad, short wings; 

 much shorter than in O. regalir, costal edge more convex; apex squarish; outer edge full and 

 convex, more so than in C. prmcipalis, and hind wings shorter, liroader, and apex rounder than 

 in that species: the hind wings reach to the end of the abdomen. 



Head and thorax In-ight ocher yellow, the thorax being entireh^ yellow, with no orange spots. 

 Head deep orange-red in front but on the vertex and around the base of the antennfe yellow; 

 a narrow transverse orange-red line on the extreme front edge of the prothorax; abdomen 

 orange, narrowly banded with ocher. 



Fore wings with more yellow than in C. regaJis,' their insertion yellow. No definite basal 

 and extradiscal lines. Three large discal spots, the innermost round, the others parallel and 

 more or less broken up. The site of the extradiscal line is occupied by a series of intervenular 

 large bright ocher spots, which are rounded on the outer edge, irregular on the inner, the 

 longest one being on the costa, the three behind diminishing in size, that in the extradiscal space 

 being the smallest one of the whole series. In the submarginal reddish brown space is a faint 

 irregular zigzag deep orange red line. Fringe of both wings reddish. 



Hind wings with more yellow than in C. rtgalh; ochei'ous at base as is the inner edge; a 

 lai'ge ocherous spot on the costa; the hind wings are more reddish than the anterior ones, and 

 with a coarsely zigzag submai'ginal reddish orange line edged internally with yellow. (The 

 yellow in this zigzag line on both wings may predominate as in Drury's "laocoon.'") 



Underside of the foi'e wings orange at base, extending out on the discal cell, and along the 

 inner edge; the extradiscal series of yellow spots as above. The hind wings beneath are yellow 

 ocher, a large hemispherical reddish spot; a broad extradiscal reddish line, the outer edge 

 reddish and yellow irregularly diffused. A])domen yellow on the sides and beneath; a lateral 

 row of reddish spots. 



Expanse of the fore wings, 9 115 mm.; length of a fore wing, 9 56 nun.; breadth of afore 

 wing, 9 30 nun.: length of hind wing, 9 38nuu.; breadth of hind wing, 9 27 mm. 



Mj' 9 specimen was compared with examples in the Paris Muscmuu labeled C. i.vion Boisd. 

 It also agrees perfectly with Boisduval's description. 



From an examination of the collection of this genus in the British Museum, which doer not 

 possess laoet'oiK I was led to regard my specimen described above as a variety of C. phomno!. It 

 is intermediate between that and the type of Walker's E. cactcux. The thorax is yellow as in 

 Vol. 9—05 10 



