Publ. 22. X. 1936. 
PYCNOSOMA; MATHORIS. By M. Gaede. 
1193 
a few from there to the distal margin below vein 2, some also at the costal margin. A steep pale brown hand 
from near the apex to the margin at vein 2. Hindwing white, with 3 fine dark brown double lines, an interior 
one, a median one, and a submarginal one. One specimen (28 mm) known from the State of Vera Cruz. 
H. botydarsa Wkr. Whigs pale yellowish. Forewing with 4 oblicpie double bands, the 3 first of which botydana. 
are incomplete. The dots and spots are blackish. Hindwing with 3 bands the ends of which are incomplete, 
the third widened at the costal margin and enclosing a white spot there. 35 mm. Brazil. From the description 
alone nothing could be said positively about it, if Hampson had not placed the species here in his List. 
H. brixifacies Dyar. Forewing olive grey with dark grey bands and shadows. Interior band bent, in- brixifacies. 
cised in the middle. Exterior band composed of a spot at the costal margin and a band below it, excurved 
behind the cell. Submarginal band divided in the middle, the anterior part more red-brown, the lower one 
forked towards a longitudinal row of black spots. Hindwing creamy white with brown bands. The interior 
one only as a spot, the middle one straight, forked at the costal margin, the exterior branch black. The sub¬ 
marginal band is distally removed in its anterior third, with a black spot in front of it. 17—22 mm. Panama. 
Described according to two specimens. 
5. Genus: I® t ycn«soiisa Hmps. 
Separated from nearly all the other genera by the third palpal joint being long porrected horizontally. 
Forewing broad, veins 7+8 short, 9 + 10 long stalked. On the hindwing veins 6 + 7 on a short stalk. The 
genus contains but one single species. 
P. angulata limps. The size and reddish yellow colouring similar to Rhodoneicra furva (173 e), but angulata. 
without the diseal vitreous spot in the forewing. Body reddish yellow. Wings golden yellow, densely striated 
reddish. Forewing only with an exterior line, obliquely outward at vein 7 almost as far as the margin, then 
straight to behind the middle of the inner margin. Hindwing with a large dark middle spot with hyaline and 
brown spots behind it; similar ones towards the inner margin. Exterior line red-brown, bent, ending at the anal 
angle. ,32 mm. Described according to 1 $ from Espiritu Santo. 
6. Genus: Math oris Gn. 
The thin palpi bent up to the frons. Wings broad and short. In the forewing only veins 9 + 10 are 
stalked. In the hindwing vein 8 is bent so far downward behind the cell that it is fused with vein 7. 5 species 
occur in South America, besides 2 in Africa; cf. Vol. XIV, p. 497, pi. 75 i. Type: vocata Wkr. 
M. vocata Wkr. ( = procurata Wkr., roseola Fldr., crepuscula Gn.) (173 c). Ground-colour orange, with vocata. 
fine dark red-brown reticulate lines. Forewing with 3 small hyaline dots, one above the base of vein 2 and 
one above vein 3, the third in the middle between them above vein 1. The brown striation is fused into a 
median band which is broad at the inner margin, enclosing the two upper hyaline dots, then divided to the 
costal margin in a narrow interior branch and a broader exterior one. Red-brown spots in the marginal area. 
The hindwing may exhibit a larger hyaline spot near the base of the cell, with a narrow red-brown band be¬ 
hind it, and a broader one at the margin with spots of the ground-colour. 15 mm. Brazil, Cayenne. 
M. mediaria Wkr. Described as a Geometrid, but placed here by Hampson. Apex of forewing pointed, mediaria. 
somewhat excavated below it. Ground-colour rusty brown. Both wings with black reticular lines, irregular 
and interrupted, with a single more prominent straight oblique line. 1 <+ 28 mm. From the Amazon District. 
M. apiceflava Dgn. Ground-colour brownish orange, with more or less regular lemon-coloured spots apiceflava. 
on the forewing below the costal margin and in the submedian fold, and in the distal half of the hindwing. 
These chessboard-like spots are produced by the veins crossing the transverse lines in the ground-colour. Fore¬ 
wing with a lemon-coloured spot below the apex at the margin, broad at veins 9—7, extending down to vem 5. 
Hindwing yellow at the margin between veins 7 and 3. 23 mm. 1 q known from Cayenne. 
M. multiguttata Hmps. (180 g). Owing to the shape of the wings and the scheme of markings, the species multiguttata. 
looks exactly like a species of Rhodoneura; it presumably belongs to the following genus. Body and wings 
dark red-brown. Thorax yellowish white. Forewing with about 5 yellowish white bands of brown-centred 
rings, besides a few indistinct bands and single rings. Hindwing with darker reticular lines in the basal area. 
Behind the middle from % costal margin a narrow band of white rings, strongly widening towards the inner 
margin. 25 mm. Bolivia. 
M. quadrigata Fldr. is placed here by dalla Torre, which is surely a mistake. Hampson has omitted it. 
150 
VI 
