242 MR. H.W. BATES ON BtrXTERFLIES FROM PANAMA. [JunC 23> 



from the valley of the Magdalena in having the inner row of pale 

 lunules of the border of the hind wings much enlarged, and of a rich 

 buff-colour, instead of the ground-colour of the wing, and also in 

 the sides of the head and prothorax being of the same hue. 



3. Papilio polycaon, Cramer et auct. 



An example contained in the collection does not differ in the least 

 from specimens obtained in the Amazons region and at Bahia, South 

 Brazil. 



4. Papilio ilus, Fabricius. 



Papilio ilus, Fabr, Ent. Syst. iii. 1. p. 17, no. 51. 



P. hostilius, Felder, Lepid. Nov. ColumbiEe, no. 5. 



Two Panama examples agree precisely with the description given 

 by Fabricius seventy years ago. As the species is not found in 

 Guiana, Brazil, or the recently explored parts of Venezuela and New 

 Granada, it has not been seen by subsequent writers on the genus, 

 and two other quite distinct forms have been made to bear the name. 

 The insect recently described by Dr. Felder from specimens obtained 

 by Moritz in the province of Merida, Western ^'^enezuela, is evidently 

 the same as our Panama species. P. ilus is distinguished from P. 

 ariarathes and P. €vagoras(yi'\\!ci which it has been confounded) by the 

 absence of the red streak from the base of the fore wings beneath, and 

 by the spots of the occiput and prothorax being red instead of white. 

 Its nearest relative is the Papilio bronchus of Guatemala. 



5. Papilio anchisiades, Esper. 



Y&T. pandion, Boisduval, MS. 



The true P. anchisiades is found abundantly in semicultivated 

 places throughout the Amazons region and in Guiana ; but although 

 in most districts vai-iable and tending to segregate local varieties, I 

 have not seen any variety approaching the present one which is known 

 as inhabiting Southern Mexico. It differs from the type in having, 

 on the fore wings, instead of a large cream-coloured rounded spot 

 near the hinder margin, a long oblique streak of the same colour ex- 

 tending from the costa across the cell towards the outer margin. 

 There is only one example in the collection. 



6. PiERis monuste, Linn, et auct. 



Var. B. Boisduval, Spec. Gen. des Lepidop. p. 495. 



Differs from the type in wanting the dusky streaks on the under 

 surface of the hind wings. The typical F. monuste occurs abun- 

 dantly throughout the whole of Tropical South America ; the var. B 

 appears to be peculiar to Central America. 



7. Callidryas statira, Cramer. 



The three specimens of this species differ from South American 

 examples in the opake ochreous coloration of the under surface of 

 the hind wings. The species is one which performs extensive mi- 



