Geometridee in the Joicey Collection. 115 
11. Racheospila penthica, sp. n. 
(Pl. VII. fig. 2.) 
¢é .—36 mm. 
Face blackish. Palpus rather short, blackish, the first and 
second joints white beneath. Crown dirty green, with a 
large black spot on each side. Antenna blackish ; pectina- 
tions scarcely longer than diameter of shaft. Occiput and 
front of thorax green; thorax and abdomen above otherwise 
black, beneath dirty white. Fore and (to a less degree) 
middle leg blackened, with white spots at ends of joints ; 
hind leg white, the tibial process reaching just beyond 
middle of first tarsal joint. 
Fore wing with SC! free, R' just separate, M! widely sepa- 
rate ; black, with an interrupted green mark, oblique out- 
ward, near base, slight green marks around the large but 
otherwise scarcely visible black cell-mark; a small, green, 
black-dotted patch at nearly three-fourths. Costaand a very - 
narrow green distal border, widening slightly at apex and 
containing at its proximal margin a row of rather large inter- 
neural black spots; a similar terminal row, extending on to 
the fringe. 
Hind wing with termen slightly subcrenulate, somewhat 
bent at R3; black, with a small green subbasal mark, and a 
narrow green distal border, which throws a small projection 
inward in front of R?; terminal spots as on fore wing. 
Fore wing beneath nearly as above, but rather more 
brownish black and with a narrow blue-white hind-marginal 
area, which broadens near base so as to touch M. Hind 
wing beneath blue-white, with a blackish shade between R? 
and costal margin, deepest towards apex, fading out indefi- 
nitely proximally. 
Huancabamba, Cerro de Pasco, E. Peru, 6800 feet. 
Belongs to the evertata group (Blechroma, Méschil.), and 
suggests being an aberration of some species of more normal 
colour-proportions. From the rich district of Huancabamba 
I know hitherto only three species of the group—nigricincta, 
Warr., conspersa, Warr., and tisstigmarta scotocephala, Prout 
(Nov. Zool. xxiii. p. 163),—all in single specimens. I have 
compared it with particular care with all the three, but also 
with the rest of the group, and cannot make the wing-shape 
and the position of such markings as remain agree with any. 
The palpus and tibial process appear slightly shorter than in 
nigricincta, the costa more arched in middle, the submarginal 
dark spots nearer the termen, etc. ; the shape of the hind 
wing differs from that of tvsstigmaria. 
gs 
