PAPILIO. 231 



species that we are acquainted with belonging to this group. We are reluctant, 

 therefore, to supersede Felder's name P. pandion, about which there can be no doubt, 

 by this old and ill-defined title, though both Gray and Messrs. Butler and Druce use 

 P. idceus in part for the insect now under consideration. 



Felder's types appear to have been taken from somewhat abnormal specimens, as the 

 band of spots he speaks of as present on the primaries of the male is rather an unusual 

 character and more frequently wholly absent; his female, too, is one with spotless 

 primaries, whereas the spots on these wings are usually more or less well developed. 

 Compared with the allied species of South America, one point in connection with this 

 band of spots seems characteristic — its maximum development is about the end of the 

 cell, whereas in P. theramenes and P. anchisiades it appears about the middle of the first 

 median branch, and in P. evander as a transverse curved band crossing the wings. 



P. pandion has a very extensive range in our country, and is found from the eastern 

 side of the mountains of Southern Mexico to Panama, its place being taken imme- 

 diately to the southward by P. theramenes ; it is apprently absent from Western 

 Mexico, but it occurs in Western as well as Eastern Guatemala, and in the mountains 

 up to an elevation of about 5000 feet. 



63. Papilio rogeri. (Tab. LXX. figg. 8, 9 e .) 



Papilio rogeri, Boisd. Sp. Gen. p. 278 \ 



P./pandioni similis, sed minor ; posticis magis dentatis, breviter caudatis, maculis tribus parvis rubris discalibus 

 tantum notatis : subtus anticis maculis quinque linea arcuata positis a cellulae fine ad angulum analem ; 

 posticis maculis ultra cellulam in serie arcuata positis nigris, iis ad marginem internum introrsum rubris. 



§ fascia maculosa discali rnbra duplici, et subtus macula subanali rosacea. 



Hab. Mexico, Yucatan (mus. Boger l ), Valladolid in Yucatan (Gaumer); Beitish 

 Honduras, Corosal (Roe). 



This species was first described by Boisduval from a Yucatan specimen in Mons. 

 Roger's collection 1 . We have since received examples from Mr. Gaumer, also from 

 Yucatan, and a single female from Corosal. 



Though we have compared it with P. pandion, it is perhaps more nearly related to 

 P. pharnaees, but may readily be distinguished by the clearly defined spotted band on 

 the primaries beneath, and by the single row of discal spots on both the upper and 

 undersides of the secondaries. In P. pharnaees and its allies a double row is always 

 present. 



P. rogeri probably enjoys a very restricted range, limited to the promontory of 

 Yucatan and the country immediately adjoining to the southward. 



64. Papilio pharnaees. 



Papilio pharnaees, Doubl. Ann. & Mag. Nat. Hist, xviii. p. 374 1 ; Gray, Cat. Lep. Ins. B. M. p. 64, 

 t. 5. f. 1 \ 



