1863.] MR. H. W. BATKS ON BUTTERFLIES FROM PANAMA. 245 



race approaches one extreme (fig. 93 of Hewitson, op. cit.) of the 

 New Granadian unstable form, the Panama one approximates the 

 opposite extreme (fig. 91, op. cit.), both the Canelos and the Panama 

 forms being further divergencies in the direction of these two ex- 

 treme varieties. 



Ithomia iphianassa, \&r. panamensis. PI. XXIX. fig. 5. 



$ . Wings opake ; fore wing above with the basal third orange- 

 tawny, which colour is prolonged a short distance along the costal 

 and hind margins, the costal edge being black, and the centre of the 

 cell ornamented with a large rounded black spot ; this is followed 

 by a broad, oblique yellow belt, commencing at the subcostal nervure, 

 and narrowing to its termination near the hind angle. Apical por- 

 tion of the wing beyond the cell black, crossed in the middle by a 

 row of three widely distant yellow spots ; apex with three smaller 

 whitish submarginal spots. Beneath, the same, except that there is 

 a row of seven submarginal white spots. 



Hind wing above with the basal half orange-tawny, the outer half 

 black, the black portion contracted near the apex, which has a row 

 of three minute whitish spots. Beneath, the same, except that there 

 is a yellow spot at the root of the wing, a black spot at the end of 

 the cell, and a row of white submarginal spots. Antennae orange, 

 basal portion blackish. Thorax yellowish, with two white dorsal 

 lines ; collar orange. Abdomen dark brown. Expanse 2" 2'". 



16. Ithomia balboa, n. sp. 



2 . Wings semitransparent ; fore wing above with the basal third 

 orange-tawny, and with a rounded black spot in the middle of the 

 cell, the costal edge being broadly black. To this succeeds a broad 

 oblique yellow belt, commencing near the costal edge, and extending 

 nearly to the hind angle ; rest of the wing sooty black, semitrans- 

 parent, the nervures darker, the black colour extending on the basal 

 side of the first median branch to the median nervure. This black 

 apical portion is crossed by a light yellow belt, extending from the 

 costa to near the middle of the outer margin. Beneath, the same, 

 except that there are three clear white spots in a row near the apex. 



Hind wing, above, orange-tawny, with a broad black outer border 

 of uniform width. Beneath, the same, except that the black outer 

 border has a submarginal row of clear white spots. Antennae black ; 

 club orange-yellow. Body brown ; collar, wing-lappets, and thorax 

 spotted with light yellow. Expanse 2" 4'". 



This species is nearly related to I. iphianassa, having the same 

 disposition of the nervures on the hind wings, which approximates 

 this group to the subgenus Ceratinia. It is, however, quite distinct, 

 having a white-spotted, instead of orange, prothorax — a character 

 which distinguishes minor groups of species in this genus. It is 

 identical in colours with a species figured, since the present paper 

 was read, by Mr. Hewitson, under the name of I. agrippina (Exot. 

 Butt. Ithom. f. 152 — New Granada), but differs in the neuration 

 pf the hind wings, J. agrippina having the nervures so disposed that 



