NO. 1140. NORTH AMERICAN NOCTUIDAE— SMITH AND DYAR. 71 



mediate and leads toward the tritona-grisea series on one hand and to 

 alni on the other. 



Tritona, reveUata, grisea, and radcUffei are blue-gray species which 

 have no dagger mark opposite the cell; but do have such a mark 

 crossing the transverse posterior line opposite the anal angle. Except 

 radcUffei these species are allied in structure, tritona forming the inter- 

 mediate type to the typical grisea form. RadcUffei in structure resem- 

 bles ocoidentaUs or loheUac, but differs from all the other species in that 

 series by its very even gray primaries, on which the markings are very 

 neatly defined, the dash opposite the cell being entirely absent in all 

 the specimens seen by me. 



Tritona is very dark, the tint being also very even. The transverse 

 anterior line is altogether wanting, but the transverse posterior is dis- 

 tinct, and thejpst mark opposite the anal angle is very prominent. 



Revellata and grisea have powdery gray primaries and almost white 

 secondaries. The maculation is well written in both, but the former is 

 larger, a little darker, yet brighter and more contrasting. The former 

 occurs in the Rocky Mountains, the latter is northeastern. 



Qiiadrata,/alcula, ami 2)a rail ela resemble grisea, but are very evenly 

 colored, and the black line opposite anal angle does not cross the 

 transverse posterior line. 



Quadrata is very distinct, and recognizable at once by the fact that 

 the space between the ordinary spots is filled by a somewhat (juadrate 

 black spot. The species is quite unique in this respect, but while the 

 superficial appearance refers the species here, the male genitalia are 

 like those of occidentaUs, and, like radcUffei, this species is evidently an 

 offshoot from the main line of development. 



Falcula and parallela are closely allied and structurally near to 

 grisea. The primaries are a very even blue gray, darker in falcula, and 

 the markings are very neatly defined. In falcula the base is shaded 

 with orange interiorly, and there is a distinct orange shade beyond the 

 transverse posterior line. In parallela these shades are wanting or at 

 most very feebly indicated, and here the secondaries are white in both 

 sexes, while in falcula those of the female at least are distinctly smoky. 



Mansueta and funeralis have in common only the black shading along 

 the inner margin of the primaries. Omitting this black shading, man- 

 sueta is intermediate between grisea and parallela, and so the male 

 genitalia refer it. 



Funeralis is unique in all respects, yet when the wing form and the 

 markings are considered closely it finds its nearest allies here. The 

 peculiarities of the male genitalia have been already referred to. 

 Above the middle the primaries are white, mottled with bluish, while 

 the black shading along the internal margin is very well defined and 

 sends up a distinct spur on the transverse anterior line. 



All the others in this series have the vestiture more or less roughened 

 and the scales somewhat elevated. Almost all these species are some- 



