RHIZAGROTIS. By Dr. M. Draudt. 
51 
a black ground. British Columbia. — f. perfida Dod. is uniformly dark mahagoni-brown varying with blackish- perfidu. 
brown, with very slightly ochreous-brownish transverse lines and shading, without any black markings, the 
maculae coloured like the ground, except the somewhat more distinctly prominent reniform macula. 
Ch. benefida sp. n. (13 e) entirely resembles a very pale Feltia malefida (9 a, b), but owing to the benefida. 
conical, stunted frontal projection it cannot belong there; the <$ has serrate-dentate antennae, owing to the 
abdomen not being flattened it neither belongs entirely to this genus and is only provisionally inserted here. 
Very light reddish yellowish-grey with exactly the same marking as malefida, but the reniform macula is some¬ 
what smaller and narrower, of a plain blackish grey with a lighter angular line in the centre; the ring-macula 
is connected with it by a very fine black streak above the median. The costal margin is only subcostally strewn 
with a somewhat darker shade. Hindwing white, somewhat diaphanous. From Ecuador (Riobamba). 
11. Genus: lthizagrotis 8m. 
This group of species with acclivis (8 f) as its type comprises the species with plain, ciliary antennae; 
as we have already stated in the preceding genus, it is more a subordinate genus; the abdomen is cylindrical, 
not flattened. 
Rh. socorro B. & McD. This pretty species is extremely variable in the ground-colour, from a light socorro. 
yellowish brown, reddish-brown to dark blackish-brown, so intensely strewn with blackish that a marbled 
exterior is created, with a black basal ray, a yellowish costal margin and equally coloured maculae, black double 
transverse lines and bluish-white undulate line beginning with a larger costal spot. Hindwing diaphanous 
white, darkened on the veins and margin, in the $ darker. Described from Arizona. — f. panipolycala Dyar pampolyca- 
(8 e) belongs hereto, it is marked exactly the same, but more iron-grey in the ground-colour, without the dark la • 
filling of the cell and not so variable. The hindwing of the $ is like that of the <$ whitish and hardly darkened. 
Mexico. 
Rh. salina B. & McD. (= arabella Dyar) (8 f, 13 f as arabella) is quite similar. Blackish-brown, tinted salina. 
somewhat reddish, with a light yellowish costal margin, the undulate line being entirely absent, only a darker 
triangular spot subapically at the costal margin before it indicating its position. Hindwing white. Described 
according to 1 $ from Arizona, occurring also in Mexico (Morelos). 
Rh. manethusa Drc. (= albicosta 8m.) (8 g) has purple blackish hindwings with a whitish costal- manethusa. 
marginal stripe, with finely black-striped veins therein, with a black basal ray, distinct double transverse lines 
filled up with a somewhat lighter colour and between them with reddish maculae in white rings and encircled 
with black, in the deep black cell, the reniform macula produced at the upper end and on the outside connected 
with the postmedian line by black streaks; coniform macula distinct, black; undulate line indistinct, dentate; 
fringes ochreous-reddish. Hindwing semi-diaphanous white with a brownish margin. Common from Colorado 
to Mexico. — Whether ebenea nov. is a distinct species, is doubtful. Larger, with broader wings, still much ebenea. 
darker, purple black, the costal streak of a somewhat more reddish tint, similarly marked, but without a coni¬ 
form macula and with almost extinct transverse stripes. Hindwing pearl-coloured white, at the margin 
darkened. Mexico. 
Rh. triclava sp. n. (8 f) has the colour of albicosta, but it is without the light costal-marginal streak; triclava. 
the maculae are coloured like the ground and are only conspicuous owing to the deeper black bordering, the 
ring-macula is distally extended into a point, the coniform macula is uncommonly large and broad and below 
it the anterior transverse line forms another kind of coniform macula, pointedly projecting below the inner- 
marginal vein as far as the coniform macula; the posterior transverse line is hardly visible, double, finely dentate; 
the undulate line is marked by some lighter small dots being only visible behind the cell, which are distally 
and proximally bordered by black sagittae; from the centre of the reniform macula distally a fine black streak 
extends to the posterior transverse line. Hindwing white, at the margin very feebly brownish. Colombia (Pacho). 
Rh. apicalisGrh (8f) is light reddish-brown, with blackish veins and black double transverse lines, small apicalis. 
maculae feebly encircled with a darker brown, and a purple blackish apex down to the middle radial vein, in 
the marginal area black internerval streaks. Hindwing brown, with darker veins and light fringes. Colorado, 
New Mexico, Arizona. 
Rh. acclivis Morr. (— reclivis Dyar) (8 f). Dark brown with an ochreous-yellowish costal stripe and acclivis. 
reddish internerval stripes; anterior transverse line double, the posterior line single; maculae small, reddish- 
yellow, from the reniform macula black streaks extend to the postmedian; in the marginal area reddish inter¬ 
nerval stripes and ochreous-yellowish diffuse sagittae, with speckled fringes. Hindwing yellowish-white, with 
brownish margin and veins. Texas, Colorado, Arizona. 
Rh. opaca Harv. is extraordinarily similar to acclivis (8 f), but more sharply marked with darker opaca. 
striped veins and less dark shaded. From the Eastern States (New York). 
Rh. proclivis 8m. (— oaxacana Schs., obelisca Drc. pr. p.) (8 g) is larger than acclivis, very similar to proclivis. 
it, in the discal area and at the apex more intensely blackish, with an anteriorly pointed ring-macula being 
