( 421 ) 



aiitemedian band filled in with black, very obliijne ; stigma rather largo, dot in 

 front of it distinct ; apical black lialfmoon not distinctly separate from the black 

 snbmarginal area ; yellow area of hindwing extending to abdominal margin. 

 Tenth abdominal segment differing from that of nicfitans in the tergite being 

 shorter and, at ajjcx, broader, and in the sternite being more strongly curved at end 

 and not being dilated into a tooth in middle, resembling in the latter respect the 

 sternite of N. riscits (V\. XLI. f. 25). Harpe sharjily truncate, or {fj/pe) the 

 ventro-ai)ical edge slanting. AVhip of penis-sheath long, about as long as the sheath 

 itself; left lobe or sheath evenly rounded ; armature of penis-funnel symmetrical as 

 in nictitans, with one strongly dentate process on each side, these processes leaning 

 towards each other, and a low ventral ridge which is triangularly raised at 

 each side. 



Hub. Brazil : Espirito Santo to Parana. 



In the Tring Museum 1 S from Castro, Parana (E. D. Jones). 



Sou. Nyceryx alophus. 



*Periiioiiia ni'phus var. alophus Boisduval, Spec. Gen. Lej). Ilet. i. p. 3:.'3. sub n. '> (IST.")) (Bahia ; — 

 coll. Charles Oberthiir). 



S ? . Fringe of mesothoracic tegula not quite so white as in continua, pronotum 

 and anterior part of mesonotum more or less variegated with brown ; forewing more 

 variegated than iu continua, owing to the lines being more distinct ; antemedian 

 band filled in with black (ti/pe) or not : stigma narrow, elongate ; <an abbreviated 

 sul)basal blackish band. Yellow area of hindwing reaching to abdominal margin. 



S . (Only alophus alophus dissected). Tenth segment and harpe as in continua. 

 Whip of penis-funuel short ; armature of penis-funnel (PI. LIII. f. 45) symmetrical ; 

 a short, heavily dentate process at each side of the funnel, and a longer, compressed, 

 apically rounded and slightly widened process which curves mesiad and is densely 

 beset with minute teeth. 



Ilalj. Bahia to Buenos Ayres and S.E. Bolivia. 



Two subspecies : 



a. y. alojjhus o.lophu.^. 



*PeriijoH/n iiejiliiis var. alnjiliK.-: Boisduval, I.e. (Bahia). 



Perif/unia itfjiliiis var. a. P. alnpltns, Kirby, Git. Lep. Tlet. i. p. Gl!7. sub n. 7 (189i). 



Periyoniit iiephus, Boaninghausen, Iris xii. p. 133. n. 72 (1899) (Rio de Janeiro). 



c??. This is the Brazilian form, which is rather darker than the following 

 subs])ecies. 



//(i/k Bahia to Parana, Brazil. 



In the Tring Museum 5 6^, 1 ? from : Espirito Santo; Sao Paulo; Castro, 

 Parana (E. D. Jones). 



b. jV. alophus i.vion. 



Perigonia ixioii Burmeister, Desrr. Hep. Aiye/if.. v. p. 345. 515 (187K) (Paraguay ; Buenos Ayres) ; 



Kirby, Cat. Lep. Ilet. i. p. 0:57. n. 8 (1892). 

 Perlf/oNkt iiejihus, Burmeister, /.-■. .l(/r/.s' p. I'O. t. 10. f. fi (1879) (S. Cruz de la Sierra, Bol., Gran 



Chaco). 



J?. Paler than the previous subspecies; antemedian band of forewing not 

 filled in with black. Wiietiier this form is constantly different we do not know. 

 \Ve have seen only a few specimens. 



Ila/j. Argentina, nortiiward to Bolivia and Para>ruav. 



