948 TRIOEDUSA: PRENES. By Dr. M. Deaudt. 



viriclicans. S. viridicans Fldr. (183 h) is a large, beautiful species, above deep rufous, very broadly bordered 



with black, with 3 small white subapical spots and a fourth below them ; costal margin olive-green lUve the hairing 

 of the body; a broad black oblique stripe terminates into the broad black apex; hindwing with a broad costal- 

 marginal spot; fringes of hindwings analwards white, otherwise ochreous-yellow. Beneath the forewing is 

 apicallj' and at the costal margin as well as the whole hindwings bright olive-green, at the distal margin lighter; 

 hindwing with a straight, light, narrow transverse band and a broad black inner-marginal wedge. Colombia. 

 k'irschi. S. Wrschi Weym. (183 g) is only doubtfully regarded as a different species. Above the forewing is 



mthout the postdiscal white spot behind the lower cell-end, the base of the hindwing is broader red-brown 

 and connected with the postdiscal macular band which does not extend parallel to the distal margin, but ter- 

 minates distallj' concavely pointed into the apex. Beneath the anal angle of the forewing is scarcely dusted 

 black, and the hindwing exhibits 2 parallel, distally slightly concave, light green bands, the distal one of which 

 terminates into the costal angle. Colombia. 

 iractijascia. S. fractifascia -FW)'. (183 g) resembles viridicans above, the black border being narrower; on the 



hindwmg before the distal margin extends a straight or almost proximally convex, fox-coloured band which 

 is flawed in an acute angle on the upper radial vein. Beneath as viridicans, but the distal white band of the 

 hindwing forms below the costal angle a pointed tooth distalh', touching the margin, the proximal band ter- 

 minates distally in the lower cell-angle. Colombia, Venezuela. 



111. Genus: Trioe«liisa Mah. 



Antennal club verj^ long, fusiform; palpi appressed, last joint conical, erect. Middle radial of the fore- 

 wing as in Psoralis and Calpodes ; the median stronglj? inflated, especially beneath ; the submedian is bent and 

 forms an angle at the place where it touches the lower end of the stigma. Posterior tibiae bare, only with ter- 

 minal spm's. Scent-scale stripe tripartite, the iippermost part velvety black near the cell-end on the median, 

 the middle one bordered with grey at the lower median vein, and the lower romidish, hairy on the submedian 

 angle. 

 milvius. T. milvius Mab. (183 h). Black, costal margin striped ferruginous yellow, with a narrow, oblique, 



reddish-yellow band extending from the 3 small subapical spots to the base of the proximal margin and widening 

 before the stigma ; hindwing with a broad discal spot, fringes likewise ferruginous-j'ellow. Beneath the forewing 

 is ferruguaous-yellow, the band lighter yellowish, hindwing the same, the discal spot bordered by small reddish 

 spots. Brazil, Paraguay. 

 dci-erijeiis. T. devergens s^p. nov. (183 h) is above and beneath hardlj' discernible from milvius, somewhat 



smaller, the wings less stretched and above all different by anatomical differences which will probably necessitate 

 the establishment of a new genus. The median is not inflated nor is the submedian angularly flawed. The 

 scent-organ consists of an angular part on the median in the angle where the lower branch rises, below it a 

 roundish scent-spot and above the submedian a third one. The reddish-yellow band of the hindwing is above 

 somewhat broader and beneath the black colom- on the forewing is more intense and more extensive. Othermse 

 coloured and marked the same. According to 1 ^ from Muzo (Colombia), taken bj- Fassl. 



112. Geims: JPreiies Scddr. 



Antennae mostly rather short, like the last palpal joint, Forewing long, the cell of ^/g of the length 

 of the costal margin; middle radial as in the preceding: hindwing at the anal angle feebly lobate. The 

 oblique, narrow scent-scale stripe which is interrupted, is in some species absent altogether. Posterior tibiae 

 Avith double spvu-s. 

 nero. P. nero F. (= njxtelius Latr., fusina Hew.) (183 h) is a most extraordinaril)' variable species, espe- 



cially in the size and development of the white band on the hind-wing beneath. Above blackish-brown with a 

 white, semi— transparent cellular spot, 3 or 4 behind it, the uppermost verj' small, the lowest more yellowish 

 than the others, and 3 subapical dots. Beneath the same, but on the hindwing mostlj^ with a white band. Head 

 corrupfa. and thorax mostly greenish. — In f corrupta H.-Schdff. (183 h) the spots are small, the hindwing shows instead 

 of the white band above an indistinct reddish one; beneath the latter is broad, somewhat reddish. Cuba. — 

 si/lvicola. sylvicola H.-Schdff. (183 i) has the hindwing beneath in the larger costal half and the apex of the forewdng 

 suffused with steel-gre}' or lilac-grey, and instead of the white band of the hindwing only small, indistinct light 

 iuiidia. punctiform spots. From Cuba and Para. — In fufidia Hew. (183 i) the band is narrow, divided into spots. Bet- 

 ween all these forms there exist, however, numeroirs transitions. Often the cellular spot of the forewing is 

 conformis. prolonged. From Mexico to Brazil and the "West Indies. — f. conformis Plotz (183 i) has beside the broad white 

 band of the hindwing also a cellular spot beneath. 

 evadncs. P. evadnes Cr. (= chlorus Plotz) (183 i) is larger than nero. Forewing towards the base and hind- 



wing strewn with dark yellow, otherwise above very similar. Beneath the apical part of the forewing and the 



