126 BULLETIN 38, UNITED STATES NATIONAL MUSEUM, 



bly, when the iuterveniug territory is fully explored, prove a variety. 

 The range of size in the species is uu usual. 



Specimeus of both muraennla ami catenula seen since the above was 

 written increase the probability that they are varieties of the same 

 species. 



Porosagrotis obesula Smitli. 



1887. Smith, Proc. U. S. Nat. Mas... x, 45G, Jurotis. 



Rather dark yellowish gray, irregularly mottled with darker fuscous 

 points and short lines; ordinary spots very indefiuite dusky, fuscous; 

 a fuscous suba])ical patch initiating the punctiforin s. t. line. Trans- 

 verse lines distinct, punctiform interrupted. T. a. line ui)right, curved 

 between veins. Basal line distinct, geminate. T. p. line crenulate 

 parallel with outer margin. S. t. line punctiform, even fuscous. Ter- 

 minal space more densely irrorate with dark atoms. Secondaries white. 

 Beneath, white, powdery, disc of primaries darker; a common darker 

 extra discal line distinct only near anterior margin of secondaries but 

 entirely crossing primaries. 



Expands 38"""; 1.5 inches. 



Habitat.— Montana. 



The S anteume are unusually thick, the body robust, head broad, 

 primaries obtuse. As a whole this species strikes one as being the 

 most plump of the entire group. A single specimen only is thus far 

 known. Received irom llev. George D. Hulst. 



Porosagrotis satiens Smith. 

 1890. Smith, Traus. Am. Eut. Soc, xvii, Jijrotis. 



General color luteous gray, palpi brown at sides, head and thorax 

 else immaculate. Primaries black powdered, irrorate, the ordinary 

 maculation confused and indefiuite. Basal line black, interrupted, 

 geminate, always marked on costa at least. T. a. line marked by a 

 geminate black costal dot and very indefinite below this, but as a whole 

 outwardly oblique. T. p. line geminate, inner line crenulate, not very 

 well marked, outer line a series of venular dots variably distinct; as a 

 whole its course very even. Beyond its middle the s. t. space begins 

 to darken to the outer margin, the terminal space being much darker 

 than ground color, almost blackish; through this dark space the s. t. 

 line is distinct as a series of large pale spots not much paler than ordi- 

 nary ground color. A series of black terminal spots. A vague indica- 

 tion of a basal dash. Claviform moderate, concolorous, black marked 

 but not completely defined. Orbicular oval, elongate, quite variable 

 in size, black marked, then with a pale aunulus, center concolorous or 

 very little darker than ground color. Eeniform large, kidney-shaped, 

 very indefinitely and quite incompletely outlined; concolorous. lu 

 some specimens the cell is distinctly black before orbicular and be- 

 tween that and the reuiform. Secondaries in the S pearly white, in 



