( 702 ) 



a more restricteil range, Brazil being inhabited by no less than eight ont of the nine 

 species, of the ninth so far only a few Ecuadorian specimens being known. Two of 

 these insects extend northwards to Mexico {F. wjesilaus and P. protesilaus), a 

 third species {glaucolaus) being found as far north as tlie isthmus of Panama. 



The various species as they occur in the same district are in most cases easily 

 distinguislied from one another, but there is often hardly any difference in pattern 

 between the individuals of one species from one district and the individuals of 

 another species from another district, or two species are very different in one locality 

 and almost identical in pattern in another. This renders it practically impossible 

 to give a workable key to the species based on pattern only. Therefore we only 

 grouji the species together according to i)attern, and then give a key based on the 

 genitalia of the males, the females being so rare in this group that for want of 

 material we cannot take them into account in this key. 



a. Inner edgeof black postdiscal band of hindwing, upperside, 



quite straight down to M', the partitions R- — M^ of 



this band not luuiform 

 A line of black spots in middle of upperside of hindwing . Species No. 153. 

 No black spots in middle of upperside of hindwing . . Species No. 152. 



b. Inner edge of black postdiscal band of hindwing incised 



on veins R-, R' and M', the partitions R- — M' of the 

 band being more or less Inniform 

 Ad- and submarginal interspaces of hindwing yellow . Species Nos. 154 



and 15G. 

 Ad- and submarginal interspaces of hindwing white or 



slightly huffish Species Nos.149, 



150, 151, 155. 



c. Red lino on underside of hindwing bordered with black 



on outerside, not on innerside as it is in all the other 



species Species No. 148. 



Key based on the c?-genitalia and scent-organ ; Sjiecies No. 148 not 

 included, as it can easily be recognised by the pattern. See fig. 1, 2, and 3 

 on p. 708. 



a. Dorso-apical ridge of harpe only slightly deflexed, being 



vertical on the plane of the clasper; the ridge con- 

 tinuous from dorsal edge of clasper to apex of harpe . Species No. 149. 

 Dorso-apical ridge of harpe strongly deflexed, lying 



almost flat on the main body of the harpe ... b. 



b. This ridge dilated into a rounded lobe or a large tooth . c. 

 The ridge very narrow, hardly at all widened ... d. 



c. The ridge rounded-dilated, not produced into a prominent 



tooth Species No. 150.* 



The ridge dilated into a large trianguhir tuotii . . . Species No. 151. 

 (I. Hair-.scales of scent-organ very thin .... e. 



Hair-scales of scent-organ shorter anil l)roador than in 



1'. jirotcsilaus and the other species excejit ai/ctsihiiis . Si)ecies No. 156. 

 e. Ventral process of harpe reaching to ventral edge of 



clasper /. 



• See also the subspecies a, b, and c of Species No. 151. 



