114 



the following three species, belonging to different genera, and yet so 

 close to each other that they can hardly be distinguished except by 

 their generic characters. 



Eyes hairy, tibiae unarmed, abdomen conical : 



Mamestra assimilis Morr. 

 Eyes naked, tibiae unarmed, abdomen conical : 



Hadena impulsa {Gup.n). 

 Eyes naked, tibiae spinose, abdomen flattened : 



Agrotis velleripej^-nis G'rote. 



Genus MORRISONIA, Grote. 

 Morrisonia peracuta (nov. sp.). 

 Expanse, 37 m. m. Length of body, 17 m. m. 



Eyes hairy. Front divided by a transverse furrow between tlie eyes, the 

 'iides of which are cinereous, into two short, obtuse tufts. The frontal tuft 

 beneath and the vertical tuft above, brown. Collar and thorax gray brown, 

 the latter with a short bifid fore and hind tuft. Collar showing a conspic- 

 uous, bicolorous, black and white transverse line. Tegulae with a similar 

 terminal line. Anterior wings with brown and cinereous longitudinal shades. 

 A cinereous costal shade from the base to the apex, more or less discolored 

 by brown internervular streaks, the most prominent of which passes over the 

 place of the orbicular (which is wanting), and obscures the disc of the almost 

 obsolete reniform. The latter is indicated in the costal shade, only by faint, 

 transverse, cinereous shades, and a darker central spot. The lower portion of 

 the reniform projects slightly over and contrasts slightly with a dark choco- 

 late brown shade, which starts from the base and proceeds along and below 

 the median nervure to the exterior line ; it gradually shades into lighter 

 brown, and then into cinereous. Two dark brown basal dashes, one beneath 

 jhe median and the other beneath the submedian nervure and along the inner 

 margin. The exterior line forms a dash on the costa at its inception, and then 

 six long fine black ray-like teeth, the last of which returns back towards the 

 base, between the median and submedian nervules, meeting a like tooth from 

 the interior line (this tooth being the only portion of that line visible) ; be- 

 neath this the exterior line forms a long, sharp, outwardly projecting tooth on 

 the submedian. Subtermiual space cinereous ; outwardly its indentations 

 jaggeti (corresponding to those of the exterior line), and in particular two long 

 Hadena-Vike teeth, extending to the outer margin. Terminal space brown, 

 divided into two principal areas, one above and the other below the subter- 

 miual teeth. A broad, more or less discolored cinereous shade from the base 

 to the inner angle along the margin. A serios of white terminal dashes be- 



