( 421 ) 



24. Citheronia fenestrata spec. nov. 



cT. Head, upper- and underside of thorax, legs, base and apex of abdomen 

 above ferruginous, rest of upperside of abdomen more or less deep brown, under- 

 side of abdomen yellow. Two spols at bases of antennae and a transverse black- 

 edged baud on metanotnm yellowish white. 



Upperside of wings like abdomen. At base of forewing a white spot 

 including a black line ; one or two patches near base aud two below apex of cell 

 ferruginous, ill-defined, sometimes very faint, between which there is a shadowy 

 fuscous antemcdian line ; at apex of cell a rounded yellowish or ferruginous 

 patch ; a black discocellular bar centred by a grey line; beyond this bar usually 

 some ill-defined yellowish or ferruginous patches ; on disc a row of three or 

 four transparent spots as in C. principalis Walk. (1855); beyond these spols a 



shadowy band, aud before margin a ferruginous yellow zigzag line. Hindwing 



with a pale yellow patch at, and beyond apex of cell, consisting of two to four 

 spots ; discocellular bar black with grey centre, situated in the yellowish patch ; 

 below apex of cell a deeper yellow or ferruginous patch, and before margin a 

 zigzag line as on forewing. 



Underside : forewing tawny-olive, more fuscous distal ly ; fuscous discal and 

 yellowish submarginal zigzag line vestigial on both wings ; hindwing pale yellow 

 like underside of abdomen, fuscous distal ly and along costa. 



LeDgth of forewing : 45 — 55 mm. 



Ilab. South-East Peru (type), Upper Amazons, and British (iuiana. 



6t?c?. 



Nearest to C. principalis Walk. (1S55), but very much darker, the hindwing 

 bearing a yellowish wdiite central patch which is absent from principalis. 



25. Citheronia collaris spec. uov. 



?. Body, tibiae and apex of tarsi dark hair-brown, face, palpi aud anterior 

 side of forecoxae rufescent ; upperside of head, collar (except a thin mesial line), 

 a spot on metanotnm, and the underside of the body yellow ; abdomen somewhat 

 indistinctly washed with yellow at the base and sides, the tip also being- 

 yellowish. 



/ pperside of wings dark brown, slightly russet, with an ecrn-drab gloss. 

 Forewing with a spot at base, an interrupted antemedian line, a large apical 

 patch consisting of two discal and two snbmarginal spots which are almost 

 completely united, a discal spot before M 1 aud traces of a spot before II s and 

 of a double spot before SM 1 all yellow ; apex of cell bordered by a yellowish 



tawny halfriug ; a tawny submarginal zigzag line. Hindwing small for a ? , 



the anal angle almost rectangular, the outer margin much less rounded than in 

 the ? ? of other species ; mstal area as far backwards as centre of cell cinnamon 

 rufous; a submarginal zigzag line tawny; at costal margin beyond middle traces 

 of two yellow spots; a sharply defined, band-like, yellow spot from lower angle 

 of cell to near abdominal edge. 



Underside for the greater part yellow; custal area of forewing, except at 

 apex, a large discocellular spot, some patches on disc, the costal margin of 

 hindwing and a small discocellular Bpot, ami ou both wings a sharply defined 

 distal marginal baud, which measures 10 mm. in width on the forewiug and 



