348 Mr. H. W. Bates's Contributions 



Group 7. P. PodaUrhis, and allies. 



These are generally considered as the most typical forms of the PnpU'w genus, 

 althougii in some points they seem to resemble, more than any other group, the 

 genera Thais and Doriiis. J'hey would, therefore, rather seem to be aberrant 

 forms, and those forms which recede most from those of neighbouring genera 

 would be more correctly held to be typical, as the Oiniihofiterte, but especially the 

 species of the JEneus group. It is the group, however, which is the most widely 

 spread throughout the world. Besides the elongate caudal lobe and the style of 

 colouration, they agree in the antennas being short and slender, with a rather 

 abrupt, thick and strongly-curved club. 'I'hey all frequent the open country. The 

 tropical species congregate in immense numbers to imbibe the moisture on the 

 humid margins of lakes, rivers, and on muddy places generally. 1 have included 

 P. Dolicnon and allies amongst them, although they have rather a different style 

 of colouration and are not generally included in the group. 



P. DoUcaon, Cram. 17 C. D. and authors. 

 Not a common species. It is found occasionally from Para to Peru. 



P. Columbus, Hewits. Tr. Ent. Soc. 1851, p. 98, pi. 10, f. 1. 



This very beautiful species I discovered in November, 1849, at Cararaucu, 

 near Villa Nova, on a sandy beach, sitting at the water's edge. I found it sub- 

 sequently at Ega, but it appears to be most abundant on the banks of the rivers 

 flowing from the northward, as an Indian trader once brought me an immense 

 number in a spoilt condition from the river Japura. 



P, Protes'daus, L. Cram. 202 A. B. and authors. 



Found throughout the country ; but most abundant on the Upper Amazon, 

 where it sometimes assembles in dense masses on the moist sand and mud on the 

 banks of the river. 



P. Autosilaus, Bdv. MSS.? Gray, List B. M. (as Agesilmis, Bdv.). 



This species differs from P. Agesilaus, Bdv. (zr Conon, Hewits. Tr. Ent. Soc. 

 vol.2, N.S. pi. 22, f. 3), much more than the latter does from P. Protesilans. It 

 has also the character of an inlependent species in being found in company with 

 Protesilans without amalgamalin<i with it. It has not yet been described. I there- 

 fore add a short diagnosis. P. Autosilaus $. Smaller than P?o(esi/aws. Ground 

 colour of the wings of a uniform pale greenish-white, not deeper green towards 

 the base, as Prntesilaiis and Agesilaus. Fore wing with a series of five short black 

 stripes proceeding from the costa as in the allied species: the outer edge with a 

 broad black margin (broadest at the apex of the wing), in the middle of which 

 runs a narrow semi-transparent pale stripe, of equal width, from the costa to near 

 the hind angle. Hind wing with the abdominal border black, and a black stripe 

 running from the costa, near the base, to the outside of the red anal lunule. The 

 outer border black, with a row of simple pale lunules along its centre. Beneath 

 the hind wing has two black stripes across near the base, the inner one with a red 

 spot outiiile at its base, the outer one with a broad red edge on its inner side, as in 

 F. A^eailavs. I found the species at Ega, always in company with P. Protesilans ; 

 out of a cluster of a hundred of the latter species settled on moist places, I could 

 generally select one or two of Autosilaus, conspicuously differing from the others 

 through the different tint of its wings. 



Group. 8. P. Zagreus, and allies. 



The unique species which I place here seems to be nearest allied to species of 

 the Scamander group; but it does not consort well with any other known Papilio. 

 As in P. Pansaiiias, nature seems to have perverted the usual Papilio form to 

 produce the mimetic likeness of a Helicouide. 



