1863.] MR. H. W. BATES ON BUTTERFLIES FROM PANAMA. 243 



grations, countless thousands being seen, on travelling along the 

 Amazons in the fine season, all moving in one direction. It is a 

 proof, however, that these migrations do not extend very far in a 

 limited time, that in the not very distant region of Panama a quite 

 distinct local form exists. 



8. Callidryas trite, Linn, et auct. 



The specimens of this and the following are precisely similar to 

 South American examples. 



9. Callidryas argante, Fabricius. 



10. Danais thersippus, n. sp. 



cJ . Wings, above (including the nervures), dull reddish brown, 

 with a distinct, rather broad, dark-brown outer border of nearly uni- 

 form breadth. The white spots of the fore wings are the same in 

 number and arrangement as those of D. eresimus, Cramer (Pap. 

 pi. 175. figs. G, H), except that the exterior row is continued to the 

 apex of the fore wings, instead of being interrupted. The dark border 

 of the hind wings is nearly spotless. 



Beneath, the fore wings are the same as above ; but the hind 

 wings have the nervures bordered with dark brown, which dark 

 borders are again accompanied by lines of white : the dark outer 

 borders of the wings have a double row of large white spots. Body 

 and antennae as in D. eresimus. Expanse 3" 4'". 



This species seems to be midway between D. eresimus and D. 

 erippus, and resembles very closely D. Berenice ; but the ground- 

 colour of the wings is of a duller and browner shade than in any of 

 those species. 



11. Tithorea tarricina, Hewltson. 



Tithorea tarricina, Hewits. Exot. Butt. Helic. iv. f. I. 



This very fine and distinct species is at present known only from 

 New Granada, whence it has been received in the same way as the 

 rest of the large collections exported from that country, namely, 

 without further information about its locality and range. The Pa- 

 nama specimens (two) differ from the New Granada one figured by 

 Hewitson in the yellow stripe towards the apex of hind wings being 

 nearly obliterated. 



12. Dircenna callipero, n. sp. PI. XXIX. fig. 4. 



c? . Fore wings above with the basal third reddish tawny, semi- 

 transparent, the costa being dusky, and the centre of the cell having 

 a small round dusky spot ; beyond this a broad semitransparent belt 

 of a yellowish hue crosses the wing from the subcostal nervure to 

 near the hind angle ; the rest of the wing is dusky, with a subapical 

 yellowish belt from the costa to near the middle of the outer margin. 

 Beneath, the same, except that there are three whitish spotsnear the 

 apex. 



