220 EHOPALOCEEA. 



bling the Amazonian P. autosilaus rather than P. agesilaus. In P. autosilaus, however, 

 the semihyaline submarginal band of the primaries is very narrow and the outer Of the 

 two transverse bands of the secondaries beneath runs parallel to the inner band and 

 then curves round and meets it near the subanal red spot. Hopffer was the first to 

 distinguish this insect, basing his description upon specimens obtained by Deppe in 

 the Mexican State of Oaxaca *. In Guatemala P. neosilaus is a very common species 

 in the low-lying heavily forested country on the eastern side of the main mountain- 

 range. 



Dr. Staudinger possesses specimens from the Republic of Honduras, but none are 

 recorded from either Nicaragua or Costa Rica. 



49. Papilio philolailS. (Tab. LXVIII. fig. 12, right harpe.) 

 Papilio philolaus, Boisd. Sp. Gen. i. p. 256 x ; Men. Cat. Mus. Petr., Lep. ii. p. 110, t. 7. f. I s ; 

 Staud. Ex. Tagf . p. 18, 1. 12 3 . 



Alis nigris, fascia communi et lunulis submarginalibus viridescenti-albis ; anticis basi et lineis sex transversis 

 angustis ejusdem coloris, prima ad marginem internum producta, tertia et quarta fascia communi conjunctis, 

 quinta et sexta ultra cellulam ; posticis linea nigra per fasciam eommunem ; maculis duabus subanalibus 

 coccineis ; disco squamis sparsis albicantibus notato : subtus ut supra sed pallidioribus aeneo micantibus ; 

 posticis linea per fasciam eommunem nigra introrsum rubra. 



5 mari similis. 



Forma altera : alis omnino nigris maculis subanalibus coccineis et squamis discalibus tantum notatis : subtus 

 pallidioribus, linea transversa coccinea et maculis subanalibus obviis. 



Hab. Mexico x 3 , Tampico (Richardson), Cordova (Edge, Bumeli), Atoyac (H. H. Smith), 

 San Lorenzo near Cordova (Trujillo), Manzanillo (Lloyd), Acapulco (A. H. Markham), 

 Sierra Madre de Tepic (Bichardson) ; British Honduras, Corosal (Roe), Cayo (F. D. G. 



6 0. S.) ; Guatemala 3 , forests of Northern Vera Paz, Choctum, Polochic valley, Central 

 valleys (F. D. G. & 0. S.), Tucuru and Chacoj (Champion) ; Honduras (mus. Staudin- 

 ger), San Pedro (G. M. Whitely); Nicaragua, Chontales (Belt). 



P. philolaus was described by Boisduval from specimens from Mexico, where it enjoys 

 a wide range in the low-lying lands of both sides of the mountain-range from Tampico 

 on the one side to the territory of Tepic on the other and southwards. Some variation 

 is observable in a series of specimens ; this especially affects the width of the band 

 common to both wings, but the variations do not seem associated with any special 

 localities. 



The species most nearly allied to P. philolaus is P. zonaria of Butler, from the island 

 of San Domingo ; this has narrower, more falcate wings, and the submarginal spots 

 are rounder in form and not distinct lunules as in the present species, besides other 

 differences. 



Like so many of its congeners, P. philolaus frequents the sandy banks of the forest 

 streams, sometimes occurring, as in the valley of the Polochic, in very great profusion. 



