80 REVISION OF XYLOMIGES AND MORRISONIA—SMITH. 
Altogether the species are closely allied in some cases, yet not usu- 
ally difficult of recognition. It is rather strange that Mr. Grote should 
never have recognized the strong bond between confusa, mucens, and his 
species of Morrisonia. 
The genus is intermediate in character between Xylomiges and Mam- — 
estra, bisulea being most aberrant here and more like Mamestra in 
habitus. In sexual characters thereis a general tendency toward Mam- 
estra, most marked in bisulea and peracuta. 
In tabular form the species separate as follows: 
Antenne in the male bipectinated, veins 3 and 4, pale marked to margin. 
Dark fuscous brown to luteofuscous with lilac gray shading in s. t. space, reach- 
ing apex and anal angle..---. .--- .--- -+---+ +++ + 2+ eens eee eee eee MUCENS 
Smaller, basal space to t. a. line inferiorly black, the black shade extending through 
Center Of WING sess. -etecs sn scce ese oie re | sae wee ee RILEYI 
Dark fuscous, claviform well marked, reniform white marked, blotchy.-.BISULCA 
Antenne in the male serrated and bristled, a pale mark to the margin on vein 3 only. 
Ordinary spots fused, discolorous. 
Upper half of wing strongly contrasting with irferior half; the former reddish 
gray, the latter blackish brown...-....-------.----+. --++------- VOMERINA 
The contrast not evident, inferior portion of wing but little darker than costal 
VOGION ..- 22. =e = wee ee cee ee eee ce eee een cen nee eee eee eee EVICTA 
Ordinary spots not fused, finely ringed, separate, brown centered. ...-.. INFIDELIS. 
Antenna of male simple, ciliate merely; veins 3 and 4, both pale to margin. 
Primaries pale rusty brown with whitish streaks, secondaries dull fuscous, ordi- 
nary spots small, flask-shaped, fused, indistinctly white-ringed...PERACUTA 
Primaries dull fuscous brown, all the maculation vague; secondaries whitish with 
soiled outer margin; ordinary spots often fused, large, not flask-shaped, 
dark ringed ..- 22. ..c- cccces cece ccmwes cocs cnc enenseenee cee cncee=s CONFUSA 
Morrisonia mucens Hbn. 
1816. Hbn., Verzeichniss, 243, Septis. 
1823. Hbn., Zutr. m1, 25 f., 415, 416, Septis. 
1852. Gn., Spec., Gen., Noct., 1, 142, Xylophasia. 
1856. Wlk., C. B. M., Lep. Het., rx, 177, Xylophasia. 
1861. H. Sch., Corr.-Blatt, m1, 74, Xylomiges. 
1873. Grt., Buff. Bull., 1, 110, Hadena. 
1874. Grt., Buff. Bull., 11, 28, Xylomiges. 
1879. Grt., Can. Ent., x1, 206, Mamestra. 
1880. Grt., Can. Ent., xu, 117, Mamestra. 
Ground color varying from dull luteo-fuscous to a dark fuscous brown, 
all the lines confused and very strongly dentate. Collar with a black 
central line, the patagiz with submarginal black lines. Basal line gem- 
inate, black, interrupted, marked on costa. T. a. line geminate, frag- 
mentary. T. p. line denticulate, widely curved over reniform, more or 
less evidently white marked, most obviously so in the submedian inter- 
space. It is followed by a series of more or less evident, sometimes 
obsolete, interspaceal blackish dashes, which occasionally become fused 
into dusky shades above and below the pale cut veins 3and 4. Beyond 
the t. p. line a more or less obvious pale gray shade extends to the apex 
and to the anal angle, less marked or entirely wanting in the dark — 
