LEUCOCNEMIS; FALA; OXYTHAPHORA; CEPHALOSPARGETA. By Dr. M. Draudt. 
251 
base of the hind-margin; from the lower end of the reniform macula, on the discal and submedian folds, black 
rays extend to the margin. Hindwing white, at the margin grey. Arizona. 
0, erratica B. & McD. (36 h) is very closely allied with the preceding, much larger, more olive-brown, erratim. 
towards the margin strewn with white, particularly in the subterminal area, whereby the distally dark-edged 
undulate line is better visible, behind which there is an olive-brown subanal triangle which is interrupted by 
a black marginal ray. Hindwing white, on the ends of the veins smoky. Texas, very rare. 
53. Genus: I^eueociiemis Hmps. 
Very similar to the preceding genus from which it chiefly differs in the developed proboscis and the 
absence of the metathoracic tuft; the slender structure and all the rest are the same. A small number of North 
American species are known so far. 
L. perfundis 8m. (36 h). Ground-colour yellowish-white, scantily strewn with brown, in the marginal perfundis. 
area somewhat more densely, without transverse lines, only the posterior line indicated by vein-dots; the small 
whitish maculae are feebly surrounded with brownish; the undulate line is entirely absent. Hindwing yellowish- 
white, towards the margin brownish. Texas, very rare. 
L. nivalis 8m. (36 h). Body and wings white, forewing in the disc very feebly lined with grey, without nivalis. 
any markings, excepting a feeble median shadow. Described from Texas. 
L. obscurella B. McD. (36 i). Anterior body and forewing ochre-yellowish, purely only on the head obscurella. 
and thorax as well as in the marginal area and the filling of the maculae, otherwise uniformly irrorated with 
bluish-grey; no transverse lines at all; the veins of the marginal area are finely marked darker. Hindwing 
brownish-grey. Colorado, only 2 specimens known. 
L. variabilis B. & McD. (36 i) is a very variable small species, on the forewing dark grey, strewn variabilis. 
with white, and in some places mixed with ochre-yellow; no transverse lines; maculae whitish, the coniform 
macula longer than the likewise oblong ring-macula; before the white dentate undulate line there are apicad 
some black streaks. Hindwing light yellowish grey. The 3<S are mostly much lighter than the $9 aR d often 
white with hardly any markings. California. 
54. Genus: Fala Grt. 
This genus exhibits a structure similar to Oxycnemis , but on the frons there is a large rounded projection 
with a raised edge and a flattened vertical listle in the centre, arid a horny plate below it. The hairy thorax 
exhibits tufts in front and behind; all the rest as in Oxycnemis. But one species. 
F. ptychophora Grt. (36 i). Eorewing whitish, particularly on the two folds and in the marginal area ptychopho- 
irrorated with yellowish, and in some places, particularly below and behind the cell strewn with dark brown, ra 
with indistinctly double dentate transverse lines, behind the distal line with white lunulae; the white maculae 
are finely encircled with black, the narrow reniform macula is on the median somewhat inwardly produced; 
the blackish undulate line is dentate, and behind it there is a white apical streak above. Hindwing yellowish- 
brown. California. 
55. Genus: Oxytliapliorsi Dyar. 
Proboscis stunted, palpi short as in the preceding; the frons shows a large projection with raised edges, 
but without a horny plate below it; the thorax is clad with hair and hair-like scales without tufts. On the 
forewing there is no accessory cell, and the corresponding subcostal branches, excepting the uppermost, rise 
on a joint fork; on the hindwing the uppermost radial branch is forked with the subcostal. But one species. 
0. delta Dyar (42 a). Head brown, frons and hindhead yellow, the latter spotted white, just like delta. 
the yellow collar, thorax grey, abdomen dark yellow. Forewing in the costal half bluish-white, below the median 
slate-coloured, above it through the centre of the cell extends a broad grey band being on each side bordered 
with black and in the cell strongly strangulated; in the marginal area black vein-streaks. Hindwing blackish, 
in the cell and at the base grey. Expanse of wings: 40 mm. Brazil (Natal, Rio Grande do Norte). 
56. Genus: (Vplialospar^elii Mschlr. 
This genus contains but one small species which, by its structure and neuration, except the accessory 
cell being present, entirely resembles the much larger preceding species, but the thorax is chiefly clad with 
scales, without tufts, and the proboscis is well developed. The slender legs exhibit long spurs. 
