REVISION OF SPECIES OF THE GENUS AGROTIS. 75 



the larger i>art of tlio species rather obtuse, the apices rounded. Tho 

 pali)i liave the second Joint always clavate at tip. The normal noctii- 

 idous nuiculation is usually distinct; in a majority of the species the 

 cell between ordinary spots is darker than other portions of the wing, 

 and in none are the spots entirely obsolete, nor is the maculatiou at any 

 time strigose. 



The S genitalia are alike only in two species, and they are so strongly 

 distinct in other points that the resemblance seems casmil mei'ely. 

 As a whole tlie species of (liis group are less relattd among themselves 

 than tliose of almost any other group. A decided feature is the char- 

 acter of the harpes. In other groui)S these usually show only an un- 

 important amount of variation ; but here, on the contrary, the most 

 unexpected range of variation is found. 



The divisions of the group, structural characters not serving, are 

 based on maculation. 



Two divisions of similar extent are obtained by separating the species, 

 in which the s. t. line is marked at costa with a dark si)ot or patch. 



The division so distinguished is subdivided according to the shape 

 of primaries. Tliese are in the tirst instance obtuse, rounded at tip ; in 

 the second, the a[)ex is at least rectangular and usually somewhat pro- 

 duced. 



In the first subgroup the species are : 



J>aj((^ which is well known and common to Europe and the United 

 States. In color it varies from luteous to bright red brown. Charac- 

 teristic are the very distinct black spots initiating the s. t. line, and 

 forming the only contrast to the otherwise nearly uniform coloration. 

 The S genitalia are distinctive. The harpes are long and broad, 

 ai)i)arently formed by the junction of two pieces longitudinally. The 

 sujyerior portion of this combined piece is longer, separately rounded at 

 tip. Tlie inferior portion, also rounded at tip, is excavated or emargi- 

 nate at the side, the margin somewhat irregular: at the line of junction of 

 these pieces and not far from tip, is a long, curved, acute, cornious hook. 

 At the base of the harpes is a semi ovate raised corneous rim, from the 

 Hpper margin of which proceeds a short, somewhat circular projection. 

 yoynKoiidua is luirrower winged, paler, yellowish gray in color, the 

 ordinary spots small, the cell between black, thus at once distinguished 

 by its color; it is also distinct by the bristled antenna of S , above de- 

 scril)ed. The genitalia are also distinctive. The harpes are long, mod- 

 erately wide, oblicjue at tip, from the lower margin projecting a long 

 finger, corneous in consistency. Just behind tiiis linger the side piece 

 becomes suddenly broader, and gives rise to an oblique corneous pro- 

 jection enlarged at tip. This forms the clasper. 



Bicarnca is distinct in all resiiects. Of a deep ^>lackish brown color, 

 the primaries are marked with a distinct reddish brown patch at base, 

 and a smaller, similar i)atch at costa over t. p. line. The antenna' are 

 simi)le. The S genitalia are striking. The harpes taper gradu'illy to 



