Combinations of Trojncal American Bittterfties. 689 



(Figs. 13 and 14), in this respect its probable model. I 

 refer to the peculiar ochreous colouring of the oblique 

 markings in the fore-wing apical region, — markings which 

 are of a bright yellow tint in nearly all the other con- 

 stituents of the combination. It should be noted, however, 

 that ochreous markings in this region are characteristic of 

 many species of both Euddcs and Lycorea. As regards 

 their form, the pale markings of the fore-wing present 

 certain similarities in these two species. An irregular 

 somewhat hour-glass-shaped spot appears at the end of the 

 cell of each species, as also an elongate spot with a median 

 constriction near the anal angle. The form of these and the 

 other markings is very variable, but their general like- 

 ness is noticeable. It will be found in other combinations 

 considered in the later pages of this paper that the species 

 of Protogonius are generally specially associated with those 

 of Lycorea. Thus in the present instance P. cccrops (Fig. 

 21) not only possesses the ochreous markings towards the 

 apex of the fore-wing, but the marginal hind-wing spots 

 are more strongly developed on the upper surface than in 

 any other species of the association except Lycorea atcrgatis. 



Ochreous bars also appear in the female of the Nymph- 

 aline, Eresia philyra (Fig. 20), which in other respects has 

 evidently been drawn after Ceratinia dionxa (Fig. 6), with 

 its row of distinct yellow spots along the hind margin of 

 the fore-wing. Interesting features of the male Eresia 

 (Fig. 19) are the narrow hooked fore-wing, and the absence 

 of special paleness in the apical markings, both suggebting 

 the influence of some Dione or Ev.cidcs (perhaps E. aliphera, 

 Godt.). 



DismorpMcL praxinm (Figs. 17 and 18) presents several 

 points of interest. First, the size and general shape suggest 

 Mechanitis doryssus (Figs. 3 and 4) as the model, as was 

 pointed out by Godman and Salvin : — " The female has a 

 colour resemblance to Mechanitis doryssus, a species 

 abundant throughout the same area " (" Biologia Centrali- 

 Americana, Rhopalocera," 1887-1901, Vol. II, p. 176). On 

 the otiier hand, tlie yellow apical markings follow far more 

 closely those of Meliniect imitata (Figs. 1 and 2), and its 

 mimic, Heliconius telchinia (Figs. 9 and 10), especially the 

 latter. The dark bands of both wings correspond more 

 nearly with those of the Heliconius than with the narrower 

 markings of the Mechanitis. 



The Perrhyhris (Figs, 15 and 16) can only be regarded 



