Pull. 23. XL 1925. 
XYLENA; BEHRENSIA; XYLOTYPE. By Dr. M. Draudt. 
197 
39. Genus: Xyleisa O. (nom. nud.). 
This genus contains some rather large representatives which are very closely allied to the preceding 
genus and chiefly only differ in the absence of the small parted tuft on the prothorax, and of the tuft on the 
first abdominal ring. As to the genus see also Vol. III. p. 127. 
X. nupera Lintn. (28 k) is very much like the paleartic vetusta (Vol. III. p. 127, pi. 31 c). Forewing nupera. 
light ochre-brownish, in the hindmarginal half darkened by red-brown, the surroundings of the median vein 
irrorated with greyish-white, with an intense black basal ray, dentate, mostly indistinct transverse lines, the 
coniform macula composed of 2 black streaks, and the reniform macula being rather large, irrorated with reddish- 
brown, between the latter and the undulate line a strong black longitudinal streak. Hindwing brownishred. 
Canada, United States, to the south as far as Colombia; Nebraska, Massachusetts. — The larva is apple-green, 
more rarely brown, with a narrow whitish lateral stripe, which is above bordered with black, and orange-red 
stigmata; on low plants. 
X. mertena Sm. (28 i) is somewhat similar, but much smaller, in the costal half yellowish, irrorated mertena. 
with red-brown, below it smoky grey; in the cell a blackish patch in which the ring-macula is finely surrounded 
by dark like the reniform macula which is light-centred, distally irrorated with red-brown which colour expands 
more or less far towards the margin; the posterior transverse line mostly only consists of vein-dots. Hindwing 
reddish brownish-grey. Expanse of wings: 43 to 50 mm. Canada; Washington; Seattle. 
X. curvimacula Morr. (29 a) differs from the preceding in the light costal colour being confined to curvimacu- 
the apical third, the wing being much more extensively irrorated with red-brown; the anterior transverse line 
is double, in the cell even treble and very strongly dentate; the reniform macula is a yellowish narrow crescent; 
the posterior transverse line consists of a double row r of vein-dots with a dentate line between them. Hindwing 
yellowish greyish-brown. Canada to New York and Oregon. — The larva is greenish-brown, with a darker 
chessboard-like marking, with a whitish, brown-edged dorsal line; on low plants. 
X. brillians Ottol. (28 h). Forewing bluish-grey, irrorated with brown, with a yellowish patch between brillians.) 
the centre of the reniform macula and the margin, and with reddish irroration above it as far as the undulate 
line; anterior transverse line double, posterior line single dentate, with vein-dots behind it; maculae in 
grey rings and surrounded by black, distally at the reniform macula scaled red; the undulate line consists of 
small dark sagittary spots with a stronger black one to the reniform macula. Hindwing reddish-brown. Maine. 
New Hampshire. 
X. cineritia Grt. (28 i) is similar, more brownish-grey, in the central costal-marginal half irrorated cineritia. 
with red-brown, the transverse lines as in curvimacula (29 a) just like the maculae; the undulate line is whitish, 
proximally shaded with brown, with a strong black sagittary ray to the reniform macula; the veins of the marginal 
area are marked black. Canada to Colorado. 
X. thoracica Putman-Cram. is extraordinarily similar to the preceding on the wings, but it is easily ihoracica. 
discernible by the lighter brownish-grey thorax which is blackish-brown in cineritia. Northern United States. 
X. brucei Sm. (28 i) entirely resembles the palearctic exoleta (Vol. Ill, p. 127, pi. 31 d), but it is smaller brucei. 
on an average and of a greyer colour; the ring-macula is smaller and narrower and is nearer to the reniform 
macula, the ground between both is darkened by blackish, whilst behind the reniform macula it is not darkened. 
Hindwing dark brownish-grey. Colorado. 
40. Genus: IBchrensia Grt. 
Distinguished from the preceding by the thorax being clad with rough scales, with loose tufts on the 
prothorax and metathorax. The abdomen exhibits quite a series of tufts of which that on the 2nd ring is 
particularly large and fan-shaped; at the antennal base there is a tuft of hairs. Only 1 species: 
B. conchiforniis Grt. (28 i) has greyish-white forewings irrorated with brown and strewn with black, conchifor- 
with small golden green spots in the basal area, behind the distal transverse line, before the distal margin and mi 
sometimes in the centre of the costal margin; median area darkened by blackish-brown, edged by strong double 
black transverse lines; the hitish maculae are centred brown, between and below them a spot of whitish 
irroration; the undulate line consists of small whitish sagittary spots. Hindwing reddish-brown, discally whitish, 
with a greyish-brown marginal band. Washington; California. 
41. Genus: Xylotype Pimps. 
Very closely allied to the preceding genus, the hair-tuft at. the antennal base is absent; of the abdominal 
tufts that on the 3rd ring is the largest. 
X. capax Grt. <£■ B. (28 k). Forewing purple grey, irrorated with red-brown, the transverse lines C apa.r 
on the averted sides bordered with grey, between both on the submedian fold a black streak; maculae large, 
VII 
2(3 
