10 
PYCNONEURA. By L. B. Prottt. 
B. Forewing in with a long and strong fovea behind base of cell. 
foveata. D. foveata Prout is superficially very much like a small, broadly-banded convergens (1 d) with the 
markings slightly browner, the proximal ones of the forewing extending almost to the costa. Hindwing with 
2nd radial closely approaching 1st, diverging distally. Surinam (type) and French Guiana. 
8. Genus: Pycnoneura Warr. 
This will almost certainly have to be sunk as a section of the preceding genus, from which it scarcely 
differs except that the cell of the hindwing is still shorter ( x / 4 ) and the veins of the more or less distorted, 
generally on the underside somewhat swollen and sometimes in part clothed with hair. There exist to a certain 
extent intermediates, such as argyrodines, with slightly less extreme cells, and Dolichonmra foveata, with dis¬ 
torted venation (of the fore wing), yet evidently not separable generically from convergens, with simple venation. 
Forewing in the $ nearly always with distal margin subconcave or sinuous; in the 2 with the apex minutely 
falcate; the subcostal veins rather variable; fold in curved forward, rather closely approaching the proximal 
part of 2nd median; median veins of hindwing in usually much curved in proximal part; 2nd median of 
forewing generally arising more proximally than in Dolichoneura, especially in the <3, where its base is proximal 
to the middle of the cell. 
Warren cited as the genotype “oxypteraria Guen.”, by which he understood the species afterwards 
named reciilineata; the true oxypteraria (= albidentata) is the type of Dolichoneura. 
ablataria. P. ablataria Guen. (= quadripunctata Walk., ardeata Feld.) (Id) is a pale-coloured species with 
bright-brown shading at termen and bright-brown fringe; cell-dot of fore wing present, though minute; lines 
fine, irregularly crenulate; terminal black dots conspicuous near apex of forewing, then decreasing in size and 
fosteri. becoming merged in the dark terminal line. Only known from the Amazons. — fosteri subsp. nov. is larger 
(37—38 mm), with the distal margin of the fore wing straight, not appreciably subconcave. Paraguay: Sapucay 
(W. Foster), 2 hi Mus. Tring. 
monops. P. moiiops Prout differs from ablataria fosteri in its darker, more violet-grey tone of colour, large 
circular cell-dot (spot) of forewing and weaker, but somewhat more sinuous lines. Possibly an aberration or 
jocal race. Chanchamayo. 
memo- P. manogramma sp. n. <$, 34 mm, Shape somewhat as in cinerea (1 d), but with the costal margin of 
gramma. HincLwiiag relatively shorter. Considerably darker (purplish grey), differing structurally in that SC 1 of the fore¬ 
wing arises from the cell, and superficially in that the lines are white, single, extremely slender and in places 
interrupted. French Guiana, the type from St. Jean de Maroni in Mus. Tring, the paratype in Mus. Brit., 
ex coll. Oberthur. Upper Amazon: Taperinha, near Santarem (H. Zerny), 5 <§<$ in Mus. Wien. Also a $ 
from Matto Grosso (0. L. Collenette) in coll. Joicey. 
cinerea. P. cinerea Btlr. (1 d) is larger than manogramma, the ground-colour more ashy, the 1st two lines darker 
than the ground-colour. Forewing with 1st subcostal short-stalked, in one examined specimen connate. Hind¬ 
wing with 2nd radial arising near 1st. Described from the Amazons, known also from Colombia and British 
albicata. and French Guiana. — albicafa subsp. nov. 39 mm. Rather larger than cinerea and nearly white, the irror- 
ation being very faint, light drab, only distally to the almost imperceptible white subterminal line slightly 
better developed; the dark terminal line and dark proximal part of fringe stand out very sharply by contrast. 
Matto Grosso: Burity, 30 miles N.E. of C’uyaba, 2250 feet, 1—15 October 1927 (C. L. Collenette). Type 
in coll. Joicey. 
inter- P, intercursa sp. n. 3, 40 mm. Intermediate between cinerea and rectilineata, having about the shape 
cursa. an q co i ora tion of the former, though rather more shaded with irregular darker grey cloudings, but with lines 
recalling those of rectilineata, though not edged with white; antemedian of forewing somewhat inbent in 
middle, gently excurved before and behind, that of hindwing regularly curved; postmedian on forewing rather 
less acutely angled than in rectilineata, then parallel with termen but slightly sinuous, on hindwing rather 
more proximal, not quite so straight as in rectilineata; subterminal on both wings less zigzag posteriorly than 
in that species, less incurved in the middle than in cinerea. Possibly a race of the latter, but SC 1 of the forewing 
arises from the cell. Bolivia: Prov. del Sara, Dep. Santa Cruz, 450 m (G. Steinbach), type in coll. Joicey. 
recti- P. rectilineata Warr. (Id) is distinguished by its shape, its straight postmedian, strong subterminal, 
tme at a. e ^ c r jq ie ] subcostal of the forewing is rather long-stalked with the others. French and British Guiana; 
cohibita. Amazons. — cohibita subsp. nov. only differs in its slightly less extreme shape. Bolivia, the type in coll. Joicey, 
collected with that of intercursa. A $ from Tarapoto, Peru (coll. Oberthur) no doubt belongs with it. 
tarpis. P, turpis Warr. (1 e). Near rectilineata in size, shape and structure, but very different in the bands, 
which are much lighter brown, undulate or lunulate, the antemedian of the forewing as strong as the post- 
