52 
RHIZAGROTLS. By Dr. M. Drattdt. 
catacl /vis. 
neocl ivis. 
gracilior. 
telratopis. 
tocheata. 
capoia. 
flavicoll is. 
biclavis. 
poling'/. 
lagena. 
more or less confluent with the reniform macula; the undulate line consists of small whitish sagittae, 2 of which 
opposite the transverse vein are bordered by black longitudinal streaks. Hinclwing brown with whitish fringes. 
Arizona and Mexico. 
Rh. cataclivis Dyar (8 h) is likewise similar, smaller than the preceding, distinguished by its light cell 
which is only blackened behind the reniform macula, and by the ring-macula being also prolonged towards 
the base. Hindwing lighter. Mexico, Orizaba. 
Rh. neoclivis B. db Benj. also resembles proclivis (8 g), but it is easily discernible by the lighter ochreous 
ground-colour, so that it may be merely a northern race. Expanse of wings: 37 to 41 mm. Texas (Kerrville). 
Rh. gracilior sp. n. (13 g) probably belongs into the same propinquity and forms the transition bet¬ 
ween the groups of manethusa and cataclivis. Head and thorax slate-coloured black; forewing on the ground 
showing through brown densely dusted purple black; transverse lines double, filled up with a hardly lighter 
colour; costal part as far as behind the postmedian broadly yellowish-white, in the posterior half with finely 
dark-striped subcostal veins; the median as far as the antemedian likewise white, by the same colour the maculae 
are encircled, the ring-macula is an oblong, oblique rectangle the lower proximal side of which is extended 
as a fine white stripe to the base; the ground of the cell between the maculae not darkened, no coniform macula; 
the undulate line is replaced by minute yellowish-white spots being crossed in the discal area by fine black 
internerval stripes. Hindwing white with a slightly brownish margin and veins. From Mexico (Zacualpan), in 
December. 
Rh. tetratopis Dyar has lilac-grey forewings dusted with black in the basal area, behind the proximal 
transverse line, in the cell between the maculae and in the marginal area, with a broad light costal-marginal 
stripe; proximal transverse line light, at the proximal margin distally bent, the posterior line double, on the veins 
the proximal part is sharply dentate; maculae large, light, the ring-maculae above open, the coniform macula 
almost entirely black; the undulate line is dark and begins at the costal margin with a dark triangular spot, 
behind it the marginal area is likewise darkened except the apex. Hindwing brownish-grey with a discal spot 
and darker veins. Mexico (Guerrero Mill, Hidalgo), at an altitude of 9000 ft. 
Rh. tocheata Dogn. Forewing yellowish-brown, in the disc strewn with grey; the anterior transverse 
line is only marked by 2 black costal-marginal streaks, also the posterior line being very indistinct, but slightly 
lighter than the ground, bent; the maculae are strewn with grey in the jet-black ground, the ring-macula is 
round, above open; undulate line indistinctly dentate. Hindwing semi-diaphanous white, at the costal margin, 
apex and margin hued with grey. Colombia (Quindiu), taken in September. 
Rh. capota 8m. is brown, in the discal area darker purple brown, almost black with a whitish costal- 
marginal streak, with the brown maculae in the black ground and a black basal ray and black double transverse 
lines; undulate line only defined by the darker marginal area; ring-macula U-shaped, above open, reniform 
macula large, crescentiform. Hindwing smoky brown with a small discal spot. Expanse of wings: 29 to 32 mm. 
From Arizona. 
Rh. flavicollis 8m. (8 h). Forewing blackish-brown with a reddish-yellow costal-marginal stripe, 
dusted grey in the marginal area, with a white-striped median; transverse line single; from the posterior line 
3 reddish-yellow sagittae extend to the lighter undulate line on the upper median branch, the lower and upper 
radial branches, and from the black-encircled coniform macula an ochreous-yellow stripe to the same place; 
maculae grey, encircled with black in a jet-black ground. Hindwing whitish, towards the margin brownish-grey. 
Base of the collar in the yellow, in the $ grey like the costal stripe. From Canada to Colorado and Arizona. 
Rh. biclavis Grt. (= demutabilis 8m.) has a white body and forewing, tinted reddish-brown, parti¬ 
cularly in the lower half of the cell, and below it in the centre of the proximal margin and in the marginal area, 
with a black basal area as far as the large coniform macula encircled with black; maculae white, confluent, 
reniform macula S-shaped; no transverse lines; veins in the marginal area of a pure white like the hindwing. 
The $ is dusted more brown, also the hindwing in the proximal half. From Arizona. 
Rh. polingi B. & Benj. is closely allied to the preceding, the frontal projection is less rough; the 
forewing is much whiter, slightly tinted olive-brownish with white-striped veins, and both the upper maculae 
are entirely absent, instead of it there is a thick wliite spot at the lower angle of the cell, the median and inner- 
marginal vein on both sides bordered with black; subterminal area olive-brown, the, marginal area more violettish- 
brown; hindwing white, at the margin brownish-grey. Expanse of wings: 34 to 39 mm. California. 
Rh. lagena Grt. (8 g) is similar to biclavis , larger, with dark-striped veins in the marginal area, and 
more intense brown dusting, particularly from the reniform macula a stripe extends to the margin. Montana, 
Colorado, California, Utah, Arizona, Nevada. 
