EUHAGENA; CHAMANTHEDON; PYROPTERON. By B. Zukowsky. 1239 
Forewing beneath with more prominent orange colour. head and palpi dark brown. Collar slightly mixed 
Avith white. Antennae brownish black with a blue reflection. Thorax bluish black with a broad white stripe on 
each side. Abdomen dark brown with a blue reflection and a broad white band at the posterior margin of 
the 2nd segment. Anal tuft dark brown with a white stripe on each side. Body beneath quite brown like the 
legs. Anal tuft beneath with two short white stripes not extending to the end. Forewing brown with a purple 
reflection and a small white spot at the cell-end. Hindwing quite brown. Beneath as abo\ T e, forewing whitish 
along the costa. 28—30 mm. At the beginning of October. Arizona. Larva in a composite: “burrobush”. 
Thus a particularly strong sexual dimorphism prevails in this species. 
8. Genus: ICuhagen aHy.Edw. 
Palpi slightly erected, the 1st and 2nd joints below covered with long hair, the 3rd joint long and hair¬ 
less. Head, thorax, femora and tibia with long hairs. Antennae uniformly thick with very long combs in the 
3, plainer in the $. Tongue absent. Abdomen with appressed hair. Anal tuft like a flat fan in the small 
and inconspicuous in the 9. Forewing with 12 veins, 7 and 8 stalked. Hindwing with vein 2 from the cell. 
4 and 5 from the angle of the cell, veins 7 and 8 faded, discocellular very oblique. Type: E. nebraskae Hy. Edw. 
E. nebraskae Hy. Edw. (— eoloradensis Beat.) (176 h). Head black, face and palpi white, palpi below nebraskae. 
Avith long black hair. Thorax velvety black with traces of whitish hairs. Abdomen deep black with silvery 
white rings at the posterior margins of the 2nd, 4th, 6th and 7th segments, not extending around the abdomen. 
Anal tuft black. Legs black, tarsi marked white. Forewing deep orange changing to cold bluish, costal and 
distal margins black. Discal mark oblique, black. Hindwing of the same colouring interspersed with black. 
Fringes of all the wings brown. 3 and '7—26 mm. Nebraska and Colorado; October. This peculiar Serna 
is easily noticed by its extreme colouring. 
9. Genus: ClBiimauthetloii Le Gerf. 
Smaller lepidoptera of a slender shape. Head small, the 3rd palpal joint short and pointed. Proboscis 
entirely stunted. Body slender, long, laterally slightly compressed, anal tuft normal. Wings long and narrow. 
ForeAving: 1 a rudimentary, not forked at the base, 2 arises at the interior angle of the cell, 3 from it, 7 and 
8 stalked on 1 / i of their length, 9 from the anterior angle of the cell. 10 absent, 11 withdraws from 9 at the 
base. Hindwing: 1 a obsolete, 2 before the cell-angle, 3 and 4 from the latter, stalked on 1 / 5 of their length, 
5 from the cell. 6 from the anterior angle, 7 absent. Type: Ch. hypochroma Le Cerf (Vol. X, pi. 94 b) from 
Burma. 
C. gaudens Rothsch. (177 g). 3'- Legs purple brown. Palpi and a spot below the eyes scarlet. Antennae gaudens. 
black, head and thorax purple, collar and the broad margin of the thorax scarlet. Abdomen brownish black, 
basal segment scarlet, anal tuft reddish brown. ForeAAong bright purple, a scarlet band beyond the cell, folloAved 
by a transparent one, 1 / 5 as far as the distal margin scarlet orange, fringe brown. Hinchving from the base 
about 3 /- transparent, the rest as far as the margin purple brown. 22 mm. Rio Grande do Sid. Brazil. 
C. aurantiibasis Rothsch. (177 g). Legs and palpi orange. Head black, antennae brown. Thorax blackish aurantii- 
brown with two blue spots, the sides brick-red. Abdomen brick-red, anal tuft wood-brown. Fore wing: basal bai 
third brick-red, median semitransparent, a broad brown band at the cell-end Avith a brick-red centre, the 
area towards the distal margin pale wood-brown. Hindwing transparent with a reddish brown margin. 
18 mm. Marcapata, Eastern Peru, 1200 m. 
10. Genus: Pyropterosi Newm. 
In 1835, Neavman described this genus for chrysidiformis Esp. from Europe, apparently considering 
the peculiar red colouring more than morphological characters; the latter are so insignificant that they are 
difficult to distinguish from the folloAving genus Chamaesphecia. The authors to-day generally comprise chry¬ 
sidiformis and its allies with the other species of the genus Chamaesphecia ; Ave bring the genus only because 
Ave follow the classification in Junk's Catalogue, where also the subsequent species is enumerated. 
P. chrysomelaena Le Cerf (176 h). Head blackish purple, face glossy white. Palpi golden yelloAv, the chrysome- 
3rcl joint rather long. Antennae above black, reddish beneath, yelloAv at the base. Collar golden yellow, lae 
thorax purple black, metathorax above, pectoral sides below with two golden yelloAv spots. Abdomen black, 
the 1st segment quite golden yelloAv, the 2nd laterally, and the posterior margins of the 5th, 6th and 7th seg¬ 
ments also golden yelloAv. Anal tuft trilobate, black, laterally golden yelloAv. Ventrum black, the first segment 
golden yelloAv. Legs predominantly bright golden yelloAv, the ends of the tibiae black. ForeAAing transparent, 
margins, veins, discal vein black, distal area rather broad, the distal hyaline area almost quadrangular, crossed 
by five veins; this area is dusted yelloAv beneath. Hindwing transparent, veins and margins black, base and 
anal margin golden yelloAv. Fringes of all the Avings purple black. 17 mm. Brazil, Rio de Janeiro. 1 3- 
