62 



(6.) Agrotis Wilsoni, Grote, Bui. Buf. Soc. N. S. 1 p. 135, PI. 4, fig. 3 (Nos. 13 

 and 24, Mr. Behreus, California). 



I have now received a series of tliis fine species Avhich is subject 

 to considerable variation. My original description and figure illus- 

 trate the form in which the costal region and subterminal space are 

 not difierentiated by a paler color. The more usual form resembles 

 sexatilis or suhgothica, on account of the paler coloration of the 

 costal region of primaries. 



i $. — Eyes naked; all the tibiae spinose. ^ Antennae brush-like, in the 

 ? the antennae are pubescent beneath with single longer setae on the joints. 

 Size rather stout, color olivaceous. Fore wings with the basal, median and 

 terminal spaces deep olivaceous, varying in depth of color, darkest when the 

 costal region and subterminal space are palest. T. a. line usually distinct, twice 

 bent, pale centered, obsoletely geminate. Claviform concolorous, rather large, 

 sometimes indistinct. On the median space the ordinary spots are blackish, 

 more or less covered with pale scales, with a distinct inner pale annulet lining 

 the external dark defining lines, which latter are sometimes inconspicuous ; 

 reniform upright, attenuate ; orbicular oblique, spherical or oblong. Costal 

 region and subterminal space varying in tint ; sometimes violently contrasting 

 by their pallor, again with the rest of the wing olivaceous ; intermediate 

 specimens have the costal region of the wing obscure grayish. In some speci- 

 mens there are ferruginous tints about the base of the wing and again before 

 the inception of the subterminal line ; such specimens are the darker and 

 more concolorous. Hind wings with a very distinct comma mark, fuscous 

 above in ? , paler at base in ^ , in both sexes pale beneath with the discal 

 mark black and attenuate inferiorly ; fringes white. The fore wings have the 

 fringes darker with an incomplete interior line. Thorax olivaceous ; collar 

 paler at base ; palpi pale with the second joint marked with blackish out- 

 wardly. 



Average expanse, 38 m. m. 



This species may always be distinguished by its distinct olivaceous 

 and ochery colors. It is very much larger than A. pitychrous and 

 the Colorado species described by me which are nearest to it in this 

 respect. Coll. of this Society. 



(7.) Agrotis specialis, Grote. 



$. — Antennae with tufts of bristles on the joints. Eyes naked; all the 

 tibiae spinose. Bright reddish brown. Fore wings bright reddish brown with 

 the median space darker, the narrrw uneven terminal field blackish. Clavi- 

 form outlined as in A. Wilsoni, and the median lines much as in that species. 

 Ordinary spots contrasting, pale, powdery over a dark ground, of the usual 



