( 393 ) 



Aleuron. Auteima long aud slender, reaching beyond end of cell of forewing ; end- 

 segment compressed like the preceding, triangular, about three times as long as 

 vertically broad at base. Thorax not crested. Spines of abdomen : those of 

 posterior tergites long and very strong ; of proximal tergites much weaker and 

 more numerous, with small flat ones covering the longer ones ; those of stcrnites 

 also long, conical, single, thin ; end of abdomen not distinctly tufted. Legs smoothly 

 scaled, long ; spnrs of hindtibia rather short, with a tuft between the two pairs : no 

 tarsal comb. Forewing irregularly dentate; costal margin of hindwiug normal, 

 anal angle not ])rojecting, cell short, lower angle acuminate, U^ being very oblique, 

 R^ before centre, D-' much longer than D'. 



S . Sexual armature of the type of Madori/x, symmetrical : harjie vestigial ; 

 friction-scales very small and numerous. 



Early stages not known. 



Hab. South America. 



One species. 



A connecting link between Aleuron and Madorijx, Pachi/lia, etc. Nearest to 

 Stolidoptera, but easily distinguished by the absence of the costal lobe of the 

 hindwing, the shape of the jialpus, etc. 



323. Protaleuron rhodogaster spec. nov. (PI. V. f IS, S). 



S. Body above greenish olive ; beneath pinkish crimson, inclusive of palpi 

 and femora ; scaling of antennae pinkish buff, legs buff ; abdomen with deeper olive 

 lateral patches ou jiroximal segments, aj^ex of these segments laterally creamy. 



Wings, 2ipperside. Forewing like thora.x ; three antemedian and three 



discal lines, distinct at hinder margin, where they are blackish, the third discal 

 one reappearing at R-, where the second is also a little more distinct ; a small 

 black stigma ; an indistinct oblique ajiical line ending behind SC'* in a black spot ; 

 blnish white scales proximally of antemedian lines and distally of discal ones, also 

 bfitween the lines at hinder margin ; apex pointed, distal margin sinuate between 



iSC and R', dentate.- Hindwing olive-brown, greyish olive at base ; distal 



margin convex, anal angle broadly rounded, small teeth at tii)S of posterior veins. 



Underside. Forewing olive-brown in basal two-thirds, washed with clay- 



colonr, disc crimson coral-red, witli traces of lines ; a very irregular marginal band, 



brown, waslicd with red, widest before R-, deejily incised at W, M', and M-. 



Hindwing : pinkish crimson from costal margin beyond cell ; abdominal area olive 

 clay-colour ; distal marginal baud brown washed with red, less distinct than on 

 forewing, triangularly dilated at R-. 



c?. Tenth segment as in Stolidoptera (PI. XLIII. f. 1), but the processes of 

 the steruite less curved at end (Jlasper very large ; harpe vestigial, without 

 free process (PI. LIX. f. 6). Penis-sheath (PI. LIX. f. 8) large, with a stronger 

 chitinised and strongly dentate broad flap or plate on each side ; apical edge also 

 incrassate, and armed with some teeth. 



Ildh. Ecuador. • 



One i in the Oxford Museum. 



There is nothing known with which this species could be confounded. 



