REVISION OF HPECIES OF THE GENUS AGKOTIS. 145 



iKiry liiu's obsolete. The genitalia of the (^ aixi peculiar; the harpes 

 tai>('r to a rather acutely rounded ti[>, the clasper is very broad and 

 heavy, the inferior branch very thick at base, tai)erin^' rather abruptly 

 to an acute tij), the upper branch slifjhtly curved, not much longer than 

 the interior, perceptibly enlarged toward the ti[). 



Sponnd is a rather unitorm, very dark gray species with all the inacu- 

 lation indistinct. The primaries are rather short and wide. 



C<)(/itans is luteous gray, the transverse lines obvious. It differs 

 from all the preceding by a distinct black basal streak. 



The three species, hollcmani, atristrUja, and biclavis have the black- 

 lined collar, and have the ordinary spots confluent, neatly outlined by 

 a whitish line. The tendency is to a strigate type of niaculatiou, while 

 the transverse lines are obsolete. 



lloUcmani has dusky secondaries, and the priniaries are dark and 

 gray. The species is variable in size and lias no contrasts in shade or 

 marking. 



Atristri<ja has the secondaries white with a broad dusky outer mar- 

 gin. The primaries have an oblicjue paler shade exteiuling inward 

 from the apex, and anotlier extending inwardly over veins 3 to 4. 



Biclavis is pale gray with white strigations, and the secondaries are 

 white. These three species are distinct from all others in the group 

 and easily sei)arable inter se. 



None of the other species have a black-lined collar. Associated by the 

 dusky secondaries and dark colors of the primaries is a small series 

 rather distinctly separated from the others. 



Pcrpolita is very dark blackish brown, somewhat greasy in appear- 

 ance, and with rather short, broad wings. The genitalia of the male are 

 somewhat peculiar. The harpes are somewhat corneous, the edges in- 

 curved, the whole tapering to an acute tip. The clasi)er is uormal, ex- 

 cept that the upper branch is rather more curved than usual. 



Fumalis is very dark gray ; the transverse lines distinct, black, single ; 

 t. p. stiongly crenulale. The ordinary spots are indefinite. 



rer/usca is a smaller species, more fuscous in coloi', and with all the 

 markings obsolete. 



rastoraliH is a blackish, somewhat roughly scaled species, the trans- 

 verse lines not visible, the ordinary spots neatly picked out with yellow 

 scales. From the range of variation noted in a series of bred speci- 

 mens of my in/cli.v^ there is a possibility that it may i)rove but a strongly 

 maiked form of pafihnalis, though the typical form is close to pevexcel- 

 lens in appearance. 



Finis is a smaller, somewhat narrower winged, and rather paler spe- 

 cies. The lines and ordinary si)ots are all distinct, and there is a red 

 brown shade through sub-basal and s. t. space. 



Velleripcnnis with black primaries is easily distinguished by its pure 

 white secondaries. 



23045— Xo. 38 10 



