REVISION OP SPECIES OF THE GENUS AGROTIS. 43 



Expands 37"""; 1.5 iiiclius. 



Habitat. — California, Washington. 



Easily distingnisbecl from the preceding with \vhi(rh only it is likely 

 to be confonnded, by the characters previously pointed out. The collar 

 is black lined. 



Genus PLATAGROTIS Smilli. 



Anterior tibia nnartned, front smooth, S antennae simple, ciliate, ab- 

 domen conic; thorax comparatively slight, vestitnre rather long and 

 somewhat divergent, no distinct tuftiugs; primaries trigonate, ample, 

 with moderately convex or nearly straight costal margin ; apex some- 

 what produced or rectangular. 



The maculation in all the species is distinct, all the normal markings 

 being present. The colors are various shades of gray to black, impcrita 

 only having a distinct brownish tint and a reddish shade over the reui- 

 form, which is characteristic ; the species are all of good size and rather 

 easily distinguished, not only by the maculation but by the $ genitalia 

 which are ditierent in each examined species. Speciosa is largest and 

 rather the slightest of the species, showing indeed so little of the typical 

 agrotid appearance that Mr. Morrison was excusable for not at once 

 recognizing the species as belonging to this genus. The color is a dark 

 somewhat smoky gray and the maculation is white; the S genitalia 

 consists of broad harpes rounded at tip and with an obtuse inferior pro- 

 jection enveloping the lower branch of the bifid clasper; the clasper is 

 stout and corneous, attached to the harpes, and with two very unequal 

 branches; the inferior is short, thick, obtuse, straight; the superior is 

 much longer, stout, and slightly curved. Pressa is a smaller species 

 much paler in color, comparatively less robust, the maculation dark; the 

 harpes of the male are rather long and broad, the tip evenly rounded, 

 and as in the preceding species furnished inwardly with a row of spin- 

 ules ; the clasper is free from the harpes, but is very small ; inferiorly 

 the angle is rectangular, superiorly there is but a short linger-like pro- 

 jection. Trahalis is a slightly larger form than pressa, as pale in color, 

 and distinguished by the large whitish ordinary spots and a yellowish- 

 brown shade through s. t. space; of this species 1 have seen no $ , but 

 probably the genitalia are much as in the following species. Impcrita 

 is easily distinguished from all the others in the group by the brownish 

 tint and reddish shade over the reniform ; the $ genitalia are peculiar 

 in the shape of the harpes, which are heavier than usual and omarginate 

 at tip, the upper finger of the emarginatiou being decidedly the longest; 

 the clasper is free, in general shape like speciosa, but the branches are 

 more equal, the inferior longer, and the superior shorter and less curved 

 than in spcciosa. Sincera is an even jKile gray form, somewhat irrorate 

 with black, the transverse lines rather broad, very distinct ; s. t. line 

 preceded by sagittate black dashes ; the $ genitalia are almost precisely 

 like .those of impcrita. 



