of the Amazon Valley. 227 



found in the Amazon region only on the upper river, and on the 

 lower as far down as Villa Nova. In the humid forests of the Delta 

 and at Para it is entirely replaced by the local form Parsodes. At 

 Cayenne intermediate varieties occur. 



21. P. Echelus, Hiibn. 

 cf. P. Echelus, Hiibn. Samml. 



5 . P. Echemon, ib. 

 Para, and southern shore of the Amazons thence as far as Santarem. 

 It appears not to be found in any other part of Tropical America, 

 except in the condition of well-defined and fixed local forms or sub- 

 species ranking as species, of which the following is one. 



22. P. Ergeteles, Gray. 



3 2- p - Ergeteles, Gray, Cat. B.M. p. 52 (tf ?), pi 8. f. 5 (<?). 

 On the northern or Guiana side of the Lower Amazon from Obydos 

 to Barra on the Rio Negro. 



23. P. JSneides, Esp. 



3 . P. JEneides, Esper, Ausl. Scbmett. t. 15. f. 3. 



5 . , Gray, Cat. B.M. p. 51. pi. 9. f. 8. 



Local var. (7) Olive?icius 3 $ > Bates, Trans. Ent. Soc. n. s. v. p. 345. 



The typical JEneides is found on the banks of the Tocantins and 

 the Lower Amazons ; also in Guiana ; in other regions it exists only 

 as more er less well-marked and fixed local forms, one of which is 

 our P. Olivencius, which entirely replaces the type at S. Paulo de 

 Olivencia on the Upper Amazons. 



24. P. Zacynthus, Fab. Var. Polymetus, Godt. 

 <3 . P. Polymetus, Godt. Enc. Meth. ix. 35. 28. 

 It is ratber doubtful if this species really occurs in the Amazon 

 region. It is a South Brazilian form. There is an example ( c? ), 

 however, in the British Museum collection, ticketed as acquired from 

 my Para collections. 



25. P. Orsillus, Gray. 

 d $ . P. Polymetus, Swains. Zool Illus. 1st ser. pi. 92 (as Polymetus, 



Godt.). 

 c? $ . P. Orsillus, Gray, Cat. B.M. p. 57. 

 This form, which is doubtless a local modification of Zacynthus, is 

 found chiefly at Pernambuco ; it extends to the hilly country of the 

 Tapajos, where I captured examples, but does not reach the alluvial 

 plains of the Amazon. 



