1863.] MR. H. W. BATES ON BUTTERFLIES FROM PANAMA. 241 



1. Papilio xanticles, n. sp. PI. XXIX. fig. 3. 



c? . Wings above with a broad outer border brownish black ; the 

 rest of their surface pale ochreous, the ochreous portion crossed by 

 six, mostly very short, brownish-black stripes, namely, one near the 

 roots, broadish on the fore wings, but continued as a thin line on the 

 hind wings to the posterior border near the anal angle ; a second 

 rather broader reaching only to the outer edge of the cell of the 

 hind wings ; three short stripes extending from the costa to the me- 

 dian nervure of the fore wings, the last of which covers the end of 

 the cell ; and lastly, a sixth similar but shorter one beyond the cell. 

 The black border is, besides, traversed in its whole length by a row 

 of ochreous lunules running nearly parallel to the outer margin, the 

 anal lunule of the hind wings being double ; there is also a short, 

 narrow, oblique, bright red line near the anal angle. Tails long and 

 linear, brownish black, narrowly margined throughout with ochreous. 



Beneath, the same, except that the second black stripe on the 

 hind wings has in the middle a narrow bright red line, which, com- 

 mencing at the costa, is at first strongly flexuous, and then becoming 

 straight continues to the outer border of the wing, that there are 

 three grey lunules near the anal angle, and that the dark border has 

 an indistinct pale line besides the row of lunules. 



Body and antennae black ; head, thorax, and abdomen with an 

 ochreous stripe on each side. Expanse 3" 10'". 



This species, of which there are five examples, belongs to the same 

 cosmopolitan section of the genus to which the European P. poda- 

 lirius appertains, and to the minor group of which the North Ame- 

 rican P. ajax may be considered the chief member — a group which 

 apparently does not extend to South America, the cluster of species 

 of which it consists inhabiting extratropical North America, Mexico, 

 and the West India Islands. P. xanticles is distinguished from the 

 North American and West Indian species by the strongly flexuous 

 red line of the under surface of the hind wings ; in this feature it 

 agrees with P. philolaus, a common Mexican and Guatemalan species, 

 and with P. arcesilaus* , It is, however, quite distinct from both 

 in the colours and pattern of the wings, and forms an interesting ad- 

 dition to the South American species of this fine genus. 



2. Papilio protesilaxjs, Linn, et auct. 



Var. macrosilaus, Boisduval, MS. 



P. protesilaus under its typical form ranges from the south of 

 Brazil to Guiana, and westward to the end of the Amazonian plains. 

 In the valley of the Magdalena a very large form of it occurs, which, 

 although differing in nothing except size from its type, has received 

 a separate name. This fine variety seems quite to take the place of 

 the true P. protesilaus at Panama, as all the specimens (four) contained 

 in the collection belong to it. They differ, however, from examples 



* This species is known only from the figure and description given by Lucas 

 (Rev. et Mag. Zoologie, 1852, p. 131, pi. 10. f. 2. Its locality seems doubtful, as 

 Lucas gives simply the vague one of North America. 



Proc. Zool. Soc— 1863, No. XVI. 



