PERIGONICA. By Dr. M. Dratjdt. 
160 
undulate line small red-brown or black spots. Hindwing light brownish, with darker veins and margin. Canada; 
United States to New York and Illinois. 
alurina. 0. alurina Sm. (23 h). Forewing purple-grey, tinted red-brown and, strewn with black, with indistinct 
darker transverse lines, the posterior line dentate, the maculae surrounded with grey; the indistinct grey 
undulate line is proximally shaded with brown. Hindwing pinkish-grey, at the margin darkened. New York 
to Colorado. 
hibisci. 0. hlbisci Gn. (= alia auct., confluens Morr .. insciens Wkr.) (23 i) is a very variable species with purple 
grey forewings dusted with red-brown except the proximal margin; the transverse lines are indistinctly grey, 
on both sides bordered with brown, behind the distal line with dots on the veins, the large maculae in grey 
rings, the reniform macula below with a dark filling; the indistinct grey undulate line is proximally bordered 
with brown, with larger spots near the two folds. Hindwing brown with light fringes. —- In the form hibisci 
latirena. the maculae are united. — latirena Dod. is distinguished by a very large reniform macula which, however, is 
proba. not united with the ring-macula. — proba Sm. has a brick-coloured reddish ground-colour with scanty purple 
brown transverse striae, the transverse lines only marked by costal-marginal spots, without a median shade; 
qidnquefas- from California. — quinquefasciata Sm. (23 h) is of a light flesh-coloured grey, without the transverse striae 
ciatci. w pp very distinctly developed transverse markings; from Vancouver, British Columbia, and Washington. —- 
inherita. inherita Sm. (23 i) is pearl-coloured, hardly tinted reddish, with very fine transverse striae, of the transverse 
lines only traces at the costal margin, but a very distinct median shade; Oregon, Washington, and Vancouver. 
inflava. — The form inflava Sm. is flesh-coloured, without the transverse striae, as in quinquefasciata, but the trans¬ 
verse lines extinct, only the yellow undulate line very distinct, also the maculae surrounded with an intense 
nubilata. yellow; from Washington and British Columbia. —- mibilata Sm., from Colorado, is a form varying from grey 
to brick-red, with very irregular and scanty transverse striae, the transverse lines marked by an accumulation 
malora. of these striae; the median shade occupies almost the whole discal area. — malora Sm. is dull grey without 
any red tints, and looks dusty smoke-grey owing to very dense transverse striae, with distinct though broadly 
brucei. faded transverse lines. From Canada. — - brucei Sm. is of a bright reddish grey, the transverse striae not 
distinct, with distinct transverse lines, the undulate line proximally shaded with reddish, the median shade 
very prominent. Colorado. 
40. Genus: I*erigoii!ea Sm. 
Like the preceding genus, but with a small horny plate below the frons, a tuft on the first abdominal 
ring and more intense lateral hairing on the abdomen. Only known from America. 
fubnlnans. P. fulminans Sm. (23 i) is on the forewing light brownish-red with quite extinct markings, single 
transverse lines with a row of dots on the veins behind the distal line, rather large, light-ringed maculae, 
the reniform macula darkened by the median shade penetrating into it; the most distinct is the whitish 
undulate line. Hindwing white, at the margin brownish-red. From Colorado and Arizona. 
tertia. P. tertia Dyar. Forewing light reddish-brown, intensely strewn with black, with rather indistinct 
double transverse lines, the distal part of the posterior line being composed of dots on the veins; the maculae 
are in indistinctly lighter rings, the reniform macula is strangulated, below pupilled dark, before it the flawed 
median shade; the light, somewhat dentate undulate line is proximally spotted dark. Hindwing recldisli- 
white, strewn with brown, particularly at the margin. Oregon to California and Arizona. 
punclilinea. P. punctilinea Sm. (23 i) very much resembles the following eldana, but it has much less angular 
forewings and dark smoke-grey hindwings. The ground-colour of the forewing is the same dull yellowish grey, 
hardly tinted reddish and less strewn with black; the dots on the veins behind the postmedian are more 
distinctly prominent and are also visible before the anterior transverse line. California aird Arizona. 
eldana. P. eldana Sm. (= tertia Hmps.) (23 i) resembles angulata in its size and exterior, but it has combed 
antennae, and it is the species figured as tertia by Hampson in his Catalogue. Forewing dull yellowish with 
a very slight reddish tint, strewn with blackish, all the markings being present, though more or less incom¬ 
plete, the transverse lines single with dots on the veins behind the distal line; the median shade is very 
distinct, particularly in the upper part as far as the reniform macula, then extending close in front of the 
postmedian, the undulate line on both sides bordered with dark; the maculae are rather large, finely en¬ 
circled with blackish. Hindwing whitish with a smoked margin. Colorado, Arizona. 
fcrmata. P. fermata Sm. has just as angular forewings as the following angulata, and the margin is not entire, 
but the fringes are undulate. Ground-colour and blackish strewing like in the two preceding, the markings 
extremely fine, as if they were scribbled, the transverse lines partly double, particularly the posterior line 
filled up with light, its distal part punctiform, but often also quite absent, the median shade similar as in 
eldana\ the. maculae are somewhat darker than the ground, in lighter rings, the reniform macula is very long; 
the narrow undulate line is light and coherent. Hindwing diaphanous whitish with slightly grey veins. Ex¬ 
panse of wings: 34 to 37 mm. California. 
angulata. P. angulata Sm. (23 i). Forewing reddish ochreous, strewn with black; the anterior transverse line. 
is absent except a black costal-marginal dot, and the median shade is only marked at the costal margin, the 
