1236 
SYNANTHEDON. By B. Zukowsky. 
ceraca. 
ruja. 
cubana. 
tabogana. 
semiirisia. 
aerosa. 
apicalis. 
ceres. 
modesta. 
hades. 
S. ceraca Drc. Eorewing dark purple brown, a streak from the base to the end of the cell hyaline, the space 
beyond the cell broadly golden yellow, fringe dark brown. Hindwing hyaline, veins, distal margin and fringe 
dark brown, almost black. Head and palpi black, face white, collar steel-blue. Thorax dark brown. Abdomen 
orange, the two anal segments and anal tuft blackish brown. Legs bluish black. 37 mm. British Guiana: 
Essequibo River. 
S. rufa Btlr. Wings above orange with black margins, fringe grey; the margins of the forewing very 
broad, showing the ground-colour only at the cell-end, parted besides by a black streak. Body black with a 
bluish grey lustre. Abdomen with white posterior margins on all the segments. Antennae black, wings bronze 
beneath, body lead-coloured beneath, pectus laterally steel blue. Legs purple above, bronze below, middle 
tibiae above covered with orange hair. 10—17 mm. Near Valparaiso on Umbelliferae in January. 
S. cubana H.-Schdfj. Antennae, forewing, fringe of hindwing yolk-coloured. Segments 5—7 of ab¬ 
domen bright cinnamon red, segments 1 and 2, the posterior margins of 3 and 4, and the end of the posterior 
tibiae black. Abdomen pointed, the anal tuft is said to be absent. Similar to uroceriformis (Vol. II, pi. 51 f). Cuba. 
S. tabogana Drc. (176 g). Forewing dark brown, inner margin yellowish hyaline. Hindwing yellowish 
hyaline, margins and fringe brownish black. Head, thorax and abdomen black, posterior part of the thorax 
and of the abdomen with yellow hands. Antennae black, palpi and collar pale yellow. Legs above black, 
beneath yellowish white. 20 mm. Panama, Taboga I. 
S. semitrista sp. n. (176 i). <$'■ at first sight very similar to S. basalis ITAr., particularly by the long 
divided anal tuft. Antennae, head, thorax and abdomen black, palpi brownish, white beneath. Thorax above 
with two slightly orange longitudinal stripes, reddish orange beneath, ventrum and anal tuft in the middle 
silvery white. Legs black, posterior tibiae in the middle whitish, tarsi black and white. Forewing transparent, 
veins, the strong costal margin and the discal vein black. Distal margin not very broad. Hindwing trans¬ 
parent, veins and the very narrow margin black. 22 mm. The $ belonging to it is quite different. Antennae, 
head, thorax and abdomen as well as the small pointed anal tuft lustrous black. Palpi black. The 2nd joint 
slightly haired whitish. Forewing black, gradually warming into an intense light yellow behind the discal vein 
towards the distal margin. Hindwing transparent, a dark shadow at the costal margin as far as the centre of 
the wing and between veins 2 and 3. Fringes of all the wings black. Legs black, hind tibiae brownish inwardly. 
28mm. Rio de Janeiro. 1 §. Types: Coll. Marten. As the couple was found in copula by Mr. Marten in Rio, 
there can be no doubt whatever about their belonging together. The group of the Aegeriidae becoming better 
known, dimorphism is also getting more frequently evident. February, April. Rio de Janeiro, type in Coll. 
Marten. 
S. aerosa sp. n. (178 d). Antennae, head, thorax and abdomen blackish blue, with a metallic bluish 
reflection. Palpi yellow, lighter inside, the two last joints outside blackish brown, silvery white before the 
eyes. Thorax with two coppery orange lateral stripes. The 2nd abdominal segment with a broad coppery orange 
band, the others only with coppery orange posterior belts. Anal tuft blackish blue with a violet shine. Ventrum 
coppery orange. A $ shows the belts of the abdominal segments less developed and of a more yellowish tinge, 
a lighter ventrum, the anal tuft beneath again beautifully orange. Legs orange, hind tibiae black before the 
end. Forewing transparent, the stronger costal margin, the distal margin of medium width, discal vein and 
veins black. Hindwing transparent, veins and margins black, the last part of the discal vein colourless. 16 
to 17 mm. Brazil. Itatiaya. December. Types: Coll. Marten. 
S. apicalis IT At. metallic green with purple and coppery scales. Proboscis moderately long. Palpi 
erect, all white in front, 3rd joint pointed, of one third of the length of the 2nd. Antennae gradually thicken¬ 
ing. The scaled legs are rather long, tarsi beneath dingy white. Forewing purple black, dusted whitish and 
with white veins in the distal area. Hindwing with two black purple stripes proceeding from the base, a costal 
one, the other one at the inner margin. Fringes of all the wings purple. 28- 30 mm. Nanta. 
S. ceres Drc. Forewing black, greenish at the base, a small round spot below the cell near the anal 
angle and the hindwing hyaline, margins and fringes black. Head, palpi, thorax and abdomen black. Anal 
tuft black. Legs black, with yellow bands. 20 mm. Guatemala, Totonicapan, 3000 m. 
S. modesta Btlr. All the wings hyaline, veins, distal margin and fringe blackish brown. Forewing with 
a rosy tinge, a dark green costal margin, a copper-brown inner margin, discoidal cell brown. Head blackish 
green, antennae above black, rusty brown below. Palpi scaled, with a black median line above. Eyes inwardly 
silvery white. Thorax purple blue above, steel-blue beneath strewn with gold-coloured scales. Femora of legs 
steel-green, tibiae of the first pair black outside, golden inside, of the second pair dark green with three golden 
spurs, of the hind pair above dark blue, with straw-coloured and purple bands with two golden middle and 
terminal spurs, tarsi black above, golden below. Abdomen above simply smooth, steel-blue, scaled beneath. 
Anal tuft golden. Wings beneath coppery golden at the margins. 17 mm. Espiritu Santo. 
S„ hades Drc. All the wings unicoloured, lustrous bluish black, veins and distal margins dull black, 
beneath the same. Head, thorax and abdomen bluish black. Head beneath and prothorax white. 19—20 mm. 
Mexico: Teapa, Tabasco; in February. 
