XANTH1RIA; STIRIODES. By Dr. M. Draudt. 
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160. Genus: Xantliiria limps. 
The only species is much more slender and with broader wings than the preceding genus, the frons 
exhibits a plain roundish projection with a horny plate below it; the thorax is clad with hair intermixed with 
scales, prothorax tuftless, metathorax with a loose tuft, abdomen tuftless. The tibia! claw is small and thin. 
X. primulina Drc. (45 d) is on the forewing bright yellow with a deep red-brown spot at the base 
of the hind-margin, fine brown transverse lines, and several cellular dots. Hindwing light brownish with yellow 
fringes. Mexico. 
161. Genus: fctiriodes Hmps. 
Distinguished from Stiria by the absence of the proboscis and by the frons showing a rounded projection 
with a flat transverse plate in the centre and a bent horny plate below it; the thorax is chiefly clad with scales, 
the tufts as in Xantliiria. Quite a number of mostly small species from North America and Mexico have been 
described. 
S. obtusa H.-Schaff. (= obtusula Zell.) (45 d). Forewing of a bright yellow, powdered with red- 
brown except the marginal area, with a few red-brown spots, 3 of which at the costal margin are large; before 
the distal margin a row of smaller spots. Hindwing yellowish white, feebly powdered with brownish, with 
traces of 3 extinct transverse lines. Central United States as far as Texas. 
S. perflava Harv. (45 d) is somewhat larger, lighter yellow, and exhibits behind the centre of the 
hind-margin a large conical red-brown spot. The hindwing is of a purer white, towards the margin with a slight 
yellowish tint. Texas. 
S. demo Drc. (45 d) resembles perflava, but it has dark brown hindwings with yellow fringes; the 
forewings are of a brighter yellow, with a double posterior transverse line, the proximal portion of which is 
divided into dots, the distal one being dentate, followed by a subterminal row of dots, the fringes being dotted 
red-brown. The female is lighter yellow, the hindwing straw-coloured, with darker veins and 3 darker faded 
transverse bands. Mexico (Guerrero, Tehuacan). 
S. condistica Dyar (45 d) is extremely similar to demo and may only be a form of it; the yellow colour 
is deeper, the red-brown spots are larger, the spot in the centre of the hind-margin being triangular; the 
forewing exhibits below the apex a shallow concavity, below it a slight projection on which the fringe is yellow, 
below it and above it more or less red-brown. Mexico (Zacualpan, Cuernavaca). 
S. procida Drc. (45 d, e). Forewing ochreous-yellow, feebly powdered with red-brown, at the base 
and postmedianly more intensely strewn, with indistinct double transverse lines, on the sides facing each other 
with dark dots, and with one dark brown triangular spot each at the costal margin, in the middle, and before 
the apex; from the former an interrupted median shadow proceeds. Hindwing dark brown with yellow fringes. 
The female is lighter yellow, without any brown. Mexico. 
S. subserviens Dyar (45 e) is similar to procida and of the same ground-colour, but with longer wings 
and a much more robust structure; the transverse lines are not double, but single, broadly flown out; both 
the maculae are indicated. Expanse of wings: 22 mm. Mexico (Orizaba). 
S. umbria Drc. (45 e) is likewise similar, but with much broader wings and in the male of a deep red- 
brown colour, the female being loam-coloured; transverse lines as in procida, but more indistinct, only the 
beginnings at the costal margin are darker; the dark spot in the centre of the costal margin is absent, only the 
snbapical one is present. Mexico and Guatemala. 
S. nydar Dyar (45 e) is like the preceding ones, but larger, with more indistinct and much more bent 
transverse lines, the median line being the most indistinct, the total colouring more olive-brown; hindwing 
lighter, towards the base more yellowish with a small, more prominently dark median spot. Mexico (Zacualpan). 
S. nepotica Dyar (45 e) is the smallest species; forewing brownish-ochreous, excepting the median 
area and the margin shaded with dark brown, with 2 brown costal-marginal spots and 2 quite indistinct 
transverse lines being only indicated by rows of dots. Hindwing blackish with yellow fringes. Expanse of 
wings: 16 mm. Mexico (Oaxaca). 
S. virida B. & McD. (45 e) looks quite different and resembles more a Stiria hutsoni ; forewing 
yellowish-white, in the basal and marginal areas powdered with a dull green, with 2 oblique green transverse 
bands, the proximal one of which, being twice as broad as the distal one, occupies the whole median area, though 
it does not reach to the costal margin; the light fringes are speckled darker. Hindwing smoky brown with 
lighter fringes. Described from California. 
'primulina. 
obtusa. 
perflava. 
demo. 
condistica. 
procida. 
subserviens. 
umbria. 
nydar. 
nepotica. 
virida. 
