
AND THEIR TRANSFORMATIONS. 189 
the terminal joint distinct ; the head scaly ; the thorax with a slightly trilobed crest ; the fore wings generally 
pale in their ground colour, with dark markings ; the caterpillars smooth, cylindrical, with longitudinal lines. 

SPECIES 1.—POLIA ADVENA. Puare XL., Fie. 1. 
Synonymes.—Woctua advena, Wien. Verz. Hiibner ; Treitschke ; Haworth ; Stephens: Wood, Ind. Ent. pl. 13, fig. 295. 
This species measures from 1;- to 2 inches in expanse of the fore wings, which are of an ashy-brown colour, 
with a silvery shining gloss, with three stigmata and three strigee of a somewhat paler colour, but more or less 
obsolete ; the first striga is before and the second beyond the middle of the wing, between which are the two 
ordinary and a club-shaped supplemental stigma, of which the margins alone are conspicuous; the third, or 
sub-apical striga, is formed of a series of angulated, fulvous, confluent spots, margined externally with paler colour ; 
the apex itself with a very slender waved striga, formed of black curved lines ; the costa is obsoletely spotted 
with whitish ; the hind wings are pale brown, with a broad dusky border. Occasionally, as in our figure 1, the 
wings are almost entirely concolorous, with only a slight white edging to the stigmata, and a reddish patch 
behind the anterior, and another beyond the posterior stigmata. This is rather an uncommon species, frequenting 
gardens in June and at the beginning of July ; the caterpillar feeding on lettuce and dandelion. Found in 
Norfolk, Suffolk, Surrey, Devonshire, Essex. 
Noctua nireNs, Haworth (Stephens, Wood, Ind. Ent., pl. 13 fig. 296) has been regarded as a variety of 
the preceding species, than which, however, it is smaller, measuring 1 inch in the expanse of the fore wings, 
which are of a redder brown colour, with the extremity more silvery ; the supplemental stigma larger, the apical 
striga more distinct, and formed of angulated, confluent spots; the antennz are setaceous and naked, and not 
furnished with bristly pectinations. 
SPECIES 2.—POLIA NEBULOSA. Puarr XL., Fie. 2, 3. 
Synonymes.—Polia nebulosa, Ochsenheimer; Boisduval; Guénée ; Noctua Thapsi, Borkhausen ; Brahm. 
Doubleday. Noctua grandis, Donovan; vol. x., pl. 341, f. 1. Haworth. 
Noctua plebeia, Hiibner; Duponchel. Noctua polyodon, Illiger. 
Noctua bimaculosa, Esper; Stephens ; Wood, Ind. Ent. pl. 13, f.297. 
This fine species measures from 13. to 2} inch in the expanse of the fore wings, which are of a grayish white 
colour with a silvery gloss, varied with blackish markings and streaks. The two strige at the base of the wing 
are more or less distinct, and edged with black angulated lines on each side; the anterior stigma is round, and 
the outer one broadly ear-shaped ; behind the anterior one is a darker supplemental stigma, partially edged with 
a black hook-like mark : the third striga is indicated by a series of black dots on the veins, the subapical striga 
being more distinct, and formed of a row of black angulated marks more or less confluent and differing in size, 
the largest being towards the anal angle ; along the apex as well as on the costa, is a row of black dots; the 
hind wings are obscure grayish brown, with a darker border: the female is darker than the male. 
This is a widely dispersed and common species, found in June on the trunks of trees. The caterpillar, as 
represented by Hiibner, is of a grayish buff colour, with the back more fulvous, having a central longitudinal 
white line interrupted by black dots, and with brown angulated patches on each side; the sides of the body with 
oblique dark lines: it feeds on Verbascum Thapsus. 

SPECIES 3.—POLIA TINCTA. Puare XL., Fie. 6. 
Synonymes.— WVocetua tincta, Brahm ; Treitschke; Stephens; Wood, | Noctua advena, Vieweg. 
Ind. Ent. pl. 13, fig. 298. Noctua hepatica, Hiibner, 
Noctua trimaculosa, Esper. Noctua argentina, Haworth. 
This species is very closely allied to the preceding, the expansion of the fore wings measuring from 1} to 


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