REVISION OF SPECIES OF THE GENTS AGROTIS. 73 



spots. The male specimens are usually darker and more fully marked 

 than the females. 



The synonomy relating? to infecta and praxox is from Walker, and 

 has not been veriiied by me. 1 consider it very questionable in cor- 

 rectness, and do not give infecta priority for that reason. 



The species is not rare, and the larva has been described by I'l'of. (r. 

 n. French. 



Peridronia tenuescens Sniilli (Morr. MSS.). 



Head and thorax whitisli, with a few scattered reddish and black 

 scales. Primaries whitish, suftused outwardly with reddisli ; macula- 

 tion obsolete, only thc^ blaclc indefinite reniform bcini;' trac(>abh>. Sec- 

 ondaries grayish or smoky. })aler at base. Beneath uniform pale gray, 

 powdered with blackish.* 



Expands 31"""; 1.25 inches. 



Maiutat. — Nebraska. 



A single specimen in Mr. Tepper's collection has the above MSS. 

 name of Mr. Morrison attached. It is sufficiently distiiujt from its allies 

 to render separation easy. I have never seen another specinuMi. 



Peridroma simplaria Morr. 



1874. Morr., Proc. Bost. Soc. N. TI., xvii, 1(54, Agroiis (sinipUciits). 

 187.'). Morr., Proc. IJosfc. Soc. N. II., xvil, "210, Jgiotis {■simi)laria). 



1875. Harv., Bull. Buff. Soc. N. Sc, in, .'>, Ayrotis {nhnpliria). 

 1880. Grb., Bull. Gcol. Surv., vi, 108, Agrotis. 



Pale ash gray. Primaries sparsely sprinkled with bhick scales ; ter- 

 minal space darker, blackish, sometimes concolorous. Transverse lines 

 obsolete; in dark specimens the s. t. line is traceable through the dark 

 terminal portion, (ylaviform usually outlined by black scales. ]\Iedian 

 vein marked with black scales. Reniform blackish, indehnite, some- 

 times formed by two superimposed black spots. Secondaries snowy 

 white, a few dusky scales along anterior margin. Beneath, primaries 

 gray, inner margin paler; secondaries as above. 



Expands 28-31"'"'; 1.12-1.25 inches. 



Habitat. — Texas. 



lleadily recognized by the general habitus, and seems not uncommou 

 in Texas. 



Peridroma digna Morr. 



1875. Morr., Proc. Bost. Soc. N. II., xviii, 115, Agrotin. 



nigroviftata (ht. 

 1875. Grt., Bull. BufV. Soc. Nut. Sc, iii, 77, Agroiis. 



White; primaries irrorate with a few black scales, sometimes form- 

 ing a slightly darker terminal licld. Claviform sometimes faintly indi- 

 cated, but usually' entirely wanting. Reniform usually consisting of 



