ICHTHYURA. By Dr. M. Draudt. 
1053 
the large cliscal spot hazelnut-brown, the apical oblique streak especially long and distinct, the median nervules 
also brown. Hindwing very light reddish-yellow. Larva from reddish to blackish-red, the lines lemon-coloured, 
head black like the legs. It lives on Sumach (various species of Rhus). New York to the Gulf States and 
Kansas. — robusta Stkr. (= mesillae Cockll.) differs in the not darker, plainly ochreous thoracal spot, the fore- robusta. 
wing being of a somewhat more loamy yellow tint, the lines less distinct. Texas and New Mexico. - opposita opposite. 
B. & Benj. has a lighter, more ochreous thorax, the forewing is lighter than in the type, hardly strewn, the 
lines are less distinct, the discal spot is more obsolete. From Utah. discalis Dyar is more profusely and uni- discalis. 
formly strewn with brown, the reniform macula is a thick brown spot, the subapical streak is broad and faded; 
the basal part of the wing as far as the first line is dusted somewhat violettish-grey, the exterior line is espe¬ 
cially distinct. The larva shows a more black than red ground-colour. California. — ab. infusa Dyar belongs infusa. 
to the latter form, but it is still much more densely strewn with brown, so that it appears to be quite brown; 
the lines are bordered with a somewhat lighter colour, but the subapical streak is absent. San Diego (Califor¬ 
nia). — eileena Dyar resembles discalis, but it shows a softer tinge, dusted rather than strewn with brown, eileena. 
discal spot smaller, the lines distinct, but very fine, apical streak absent. From Arizona. — ab. perfusa Dyar perfusa. 
is a form of it, parallel to ab. infusa , but not so densely brown, lines almost extinct, without the discal spot. 
From South Arizona. 
D. diffidens Dyar. Head yellowish, thoracal spot brown, silvery grey hindward. Forewing uniformly diffidens. 
brown, somewhat loamy yellowish at the costal margin, densely strewn silvery grey, interior and exterior lines 
fine, brown, the middle lines more obsolete, discal spot dark brown, strewn with silvery grey; the subapical 
oblique streak between 7 and 4 very distinct. Hindwing light yellowish-white, brown towards the margin and 
strewn with silvery grey. Expanse of wings: 46 mm. Texas (Victoria). Larva not described; it is said to do 
harm to oaks. 
D. contracta Wkr. (158 g) has a quite smooth margin; thoracal spot ochreous, tan-coloured behind, contracta. 
the rest of the thorax lighter than the reddish-yellow forewings, the costal-marginal shadow more ochreous; 
fore wing strewn with blackish-brown, the similarly coloured lines are bordered with unstrewn ground-colour. 
Hindwing lighter, somewhat glossy, strewn with brown towards the margin. Larva black with very broad 
yellow lines, so that the ground-colour appears to be yellow, head black, bases of thoracic legs and abdominal 
legs yellow. It lives on oak, hazel, and hickory. Atlantic States. 
D. integerrima Grt. & Rob. (158 g) is like contracta, but of a dark reddish-brown ground-colour, more inte- 
densely strewn, lines and fringe of the same colour, whereas in contracta they are lighter brown than the blackish- , J CTTima - 
brown lines; discal spot blackish. Larva blackish-brown, with but two greyish-white lines on each side, den¬ 
sely grey-haired; on many deciduous trees, but chiefly on species of nut. Altantic States. 
D. neomexicana Doll, is allied to integerrima, but the forewing is almost unicoloured pale grey, scantily neo- 
strewn dark, the costal-marginal shadow not contrasting much, pale ochreous; discal spot obsolete, the lines mexicana 
as usual, the oblique apical blotch also faded. It resembles also californica in the shape of the wings. New Mexico. 
D. chiriquensis Dyar (159 a). Forewing very light reddish-yellow, brownish ochreous in the costal- chiri- 
marginal area, strewn with brown, often somewhat darkened between the two first lines; the lines 1, 2 and querists. 
5 thickly red-brown, 3 and 4 less distinct, somewhat undulate, bordered somewhat lighter distally, another 
fine line is often traceable between 2 and 3; discal spot strigiform, blackish, fringe red-brown. Hindwing some¬ 
what lighter, with a red-brown tinge towards the margin. Thorax almost silvery white laterally, the central 
spot rusty red. Arizona, Mexico. 
D. holoporphyra Dyar is violettish-grey, strewn with brown, the broad marginal area somewhat lighter, holo- 
dusted bluish outside, the apical oblique line extends to vein 4, the purjde brown lines are indistinct, the space V°rvhyra. 
between them darkened, the outermost line slightly excurved between 2 and 6. Hindwing densely strewn dark 
purple brown. Expanse of wings: 49 mm. Mexico (Guerrero Mill), in the State of Hidalgo. 
D. rotundata sp.n. (159 a) resembles chiriquensis, but it is somewhat smaller and discernible by the rotundata 
darker, more violettish-grey colour, only the costal-marginal area being somewhat more ochreous; lines brown- 
isli-black, of a much more rounded course than in chiriquensis, not bordered with a lighter colour, 1, 2 and 5 
most distinct, 4 almost quite invisible, the area between them not darkened; apical streak fine and distinct, 
the margin below it darker violettish grey. Hindwing light brownish cinnamon, much darker than in chiri- 
quensis. Thorax silvery white, the spot tan-coloured like the abdomen. Mexico (Colima). Type in the Coll. 
Draudt. 
156. Genus; Ichtliyura Him. 
Smaller insects with hairy eyes and pectinate antennae, with large, long palpi, appressed to the frons. 
Thorax with a conical central tuft. Wings short and broad, forewing without an areole, the subcostal branches 
bent much towards the costal margin, 3 and 4 separated, 6 stalked with the subcostal branches. Hindwing: 
veins 6 and 7 stalked. Numerous North and Central American species. The name: Melalopha Hbn. Tent, is 
declined as generic name, it was only used as a name for the species comprised here in a group: Melalophae. 
Type of genus: I. curtxda L. (palaearctic). 
