( 422 ) 



In coll. Charles Oberthilr 1 c?, 1 ? from Zarate, Argentina (Kinkelin). 

 Bnrmeister's figure does not quite agree with the specimens wliich we consider 

 to be ixioH ; we believe the fignrc to be incorrect. 



35(1. Nyceryx nephus. 



*Pert(]tinw nephux Boisduval, l.f. \i. .12:1 n. 5 (1875) (Brazil ; — coll. Charles Oberthiir); Butl., Trans. 

 Zool. So,: Loud. ix. p. 03.3 (1877) ; Kirby, I.e. n. 7 (1892). 



c7. The tj'pe is unique ; we have not seeu another specimen. Very close to 

 alophus in colour, marginal band of hindwing broader, traces of brown spots ; disc 

 of forewing below ochraceous between the lines. AVhip of penis-sheath rather 

 longer than in alophus, with more teeth ; left ridge of sheath abruptly ending 

 distally, not evenly rounded ; the teeth of the right side on a small ridge ; 

 armature of penis-funnel differing in there being no small process, but only one long 

 one at each side, this broader at end than in alophus and close to the funnel. Harpe 

 acuminate, upper margin slanting distall)'. 



Hub. Brazil, probably Province of Rio de Janeiro. 



357. Nyceryx riscus. 



*Enijo riscus Schaus, &;;. ..4 »»(■)■. vi. p. 20 (1890) (Mexico; — coll. Schaus) ; Druce, Biol. Cenlr. 



Amer., Lep. Het. Sujipl. p. 302. n. 2 (a), t. (iC. f. 3 (1896) (partim ; Mexico : Jalapa, Orizaba ; 



Guatemala). 

 Triplogou riscus, Kirby, Col. Lrp. Het. i. p. 644. n. 6 (1892). 

 PiieJii/gouia ercusa Rothschild (Staud. in lit.), Nov. ZooL. i. p. G65 (1894) (lujui. mid.). 



c? ¥ . Variable in size, but always smaller than sf.uaiii, and paler, with the apex 

 of the forewing distinctly sinuate. In this and the preceding species the stigma of 

 the forewing is indistinct, with grey centre, and there is always a rather obvious 

 black dot in front of it. 



(?. Tenth segment about as broad as in Sesia tantalus (PI. XLI. f. 25), the 

 lubes not nearly so widely apart as in stiiarti ; tergite much less twisted, and more 

 evenly curved ventrad. sharjily jxiinted in side-view ; sternite different in shape from 

 that oi' stuarti, dilated before the hook, somewhat more so than in mapia (PI. XLI. 

 f. 2(1), less than in nictitans (PI. XLI. f 24). Harpe a little shorter than in 

 .ituarti, with a few notlies at the end. Penis-sheath (PI. LIII. f. 42) without 

 whip, ending in a triangular, not movable jirocess, which is densely dentate at the 

 tip and along the right edge. 



? . Vaginal plate as in stuarti, apical margin more rounded in middle. 



Ilab. Mexico to Bolivia and Sao Paulo. 



In tlie Tring Museum 11 cJc?, 5 ? ?, from : Jalapa, iv. vi., and Orizaba, iv. vi. 

 (Schaus); Honduras; Carpe, Venezuela (Mocqnerys) ; Cucuta, Venezuela ; Merida, 

 Venezuela (Briceno) ; San Augustin, Mapiri E,, Bolivia, 35U(J ft., vi. ix. 1895 

 (Maxwell Stnart) ; Bauru, Sao Paulo (Dr. Hempel). 



358. Nyceryx stuarti. 



*I'aeIii/gonia stuarti Rothschild, Nov. ZooL. i. p. (iC6 (1894) (R. Cachyaco ; — Mus. Tring) ; id., l.c. 



ii. t. 9. f. 11 (1895). 

 Emjo riscus, Druce, Biol. Cenlr. Amer., Lep. llet. Suppl. p. 302. n. 2 {.^) (1896) (partim). 



(J?. Larger than riscus, with which it has been confounded. Forewing, 



above, darker, the discal lines more strongly curving costad, apex truncate, not 

 sinuate. Hindwing : yellow colour more restricted, in ? less extended yellow 



