ROSEMA. By Dr. M. Dratjdt. 
1055 
produced; the costal margin of other species exhibits a nodiform prominence between the middle and distal 
thirds. Head small, with large ball-shaped eyes; proboscis rudimentary, palpi not projecting beyond the frons, 
with appressed scales. Antennae with double pectinations, also the $$ generally with short pectinations. Fore¬ 
wing: veins 3 and 4 arise separately, the cross-vein is very acutely angled, vein 5 from the upper cell-angle 
or close below it, 6 from the centre or towards the end of the very narrow long areole, from the end of which 
7—9 and 10 arise. Hindwing: 5 from the centre of the cross-vein, 6 with 7 on a fairly long stalk. As far as 
they are known, the larvae exhibit the same shape and habits as those of the IchthyuYa, but they are green 
and short-haired. 
Type of genus: B. dorsalis Wkr. 
R. zelica Stoll ( 159b) is an apparently very rare form with an entirely green thorax; a much more zelica. 
common form is: — dorsalis Wkr. (159 b) with a dark brown collar and middle longitudinal stripe on the thorax, dorsalis. 
Wings of a deep green with a very fine white discal dot, a fine white costal margin, and 2 or 3 small dark brown 
fringe-spots at the slightly falcate apex. Hindwing white, more or less tinged yellowish, more yellowish at 
the inner margin. Abdomen light reddish-brown, green at the end and beneath. Characterized by the under 
surface being light green with a broad reddish-yellow costal margin and a narrow brownish marginal spot 
which extends either from the apex to the interior angle and projects farthest angularly inwards on vein 5 or 
between 4 and 5, or which is only marked at the costal-marginal part. Fringe of hindwing beneath with more 
or less distinct brown vein-dots, zelica is described from Surinam, dorsalis is widely distributed from Panama 
to Colombia, Bolivia, Peru, and Brazil. — minor /. n. (159 b), from the Amazons, Teffe, is less than half the minor. 
size of dorsalis, of a much deeper green, the white discal dot hardly visible, the hindwing much yellower, with 
very intense dark brown fringe-dots beneath. Type in the Berlin Museum, also from Colombia (Upper Rio Negro). 
R. marona Schs. (159 b) is about as large as zelica-, palpi brown, head green like the tegulae, collar and marona. 
mesothorax dark brown, abdomen light brown; apex of forewing somewhat more produced, the discal dot 
black; a dark brown subapical fringe-spot; Bolivian specimens exhibit the whole fringe speckled brown; costal 
margin narrowly yellowish. Hindwing brown, somewhat darker at the margin. Forewing beneath light red- 
brown, inner margin light green, costal margin darker red-brown, apex below the costal margin broadly, and 
the distal margin narrowly, tinged leaden grey; hindwing brown, dusted grey at the margin, more yellowish 
at the inner margin. French Guiana, Amazons, Bolivia (Songo). 
R. falcata Schs. (1 59 c) is much larger, the apex more produced, the small discal spot white, the fringe falcata. 
at the apex brown, otherwise grey with brown ends. Hindwing lighter brown. Under surface very similar 
to that of marona, but lighter. Bolivia (Songo). 
R. drucei n. n. (= falcata Drc. nec Schs.) seems to be very similar to falcata. Head, thorax and tegulae drucei. 
green, collar and mesothorax in front blackish-brown, abdomen yellowish pink, legs brown, forewing green, 
very finely bordered with brown at the apex, without the discal dot. Hindwing dark pinkish yellow. Both 
wings beneath pinkish-brown, forewing green at the interior margin. Expanse of wings: 44 mm. Colombia 
(Siato); Chaco. 
R. demorsa Fldr. ( = - epigena Sepp) (159 c). Judging from the similarly coloured under surface, it be- demorsa. 
longs near to drucei, but the forewing shows a deep concavity between the apex and vein 5. Hindhead and 
thorax green, frons and collar as well as the costal margin of the forewing light reddish-brown, a narrow white 
spot at the cell-end; fringe dark brown, spotted yellowish on the ends of veins 2—5. Abdomen and hindwing 
light yellowish-brown, hindwing more reddish-brown towards the margin. Central and South America as far 
as Brazil and Bolivia. 
R. thestia Drc. (159 c), judging from the type at hand, is dark green on the hindhead and tegulae, with thestia. 
a whitish frons, brownish towards the palpi; collar and mesothorax yellowish-brown, costal margin finely 
yellowish; forewing shaped as in demorsa, but with another concavity below the notch on vein 5; a brown mar¬ 
ginal spot between the apex and vein 2 is undulately defined inwards; brown is also an almost circular cell- 
end spot. Hindwing dark brown, narrowly darker at the margin. Forewing beneath greenish-white, costal 
margin, cell, veins of marginal area and a narrow marginal spot brown; the yellowish-white ground of the hind¬ 
wing is strewn with brown in the distal two thirds of the costal margin and in the marginal half. The type 
is from Chiriqui (Panama). Besides distributed from Mexico to Paraguay. The species is undoubtedly very 
variable. — ampliata /. n. (159 c) I denominate the form from Peru and Bolivia. Its frons, forelegs and costal ampliala. 
margin are ivory white, the hindhead is but very little green, the mesothorax is more grey; the dark brown 
marginal spot on the forewing is twice as broad and bordered somewhat whitish inwards. Type from Bolivia 
(Coroico) in the Berlin Museum. — bernardina /. n. (159 c), from Paraguay (San Bernardino), has quite light bemardina. 
yellowish hindwings which are only narrowly brown at the costal and distal margins. Frons almost quite 
white like the costal margin of the forewing, the marginal spot narrow as in the type, receding on vein 3 al¬ 
most to the margin, so that it is only very narrow between 2 and 3. Beneath almost quite greenish-white on 
the forewing, only the narrow subcostal area and the very narrow marginal spot are brown. Specimens from 
Venezuela (Merida) and Nicaragua exhibit a much lighter green, the frons is here almost quite green like the 
