4 GO NORTH AMERICAN NOCTUID.E — SMITH. 



Two species are thus far known — decepta Grt. which has the front 

 very fall and bulging, the vestiture scaly and ordinary spots distinct, 

 and edwardsii, which has the front scarcely fall, the vestiture hairy, 

 and the ordinary spots indefinite. The latter is a more robust species 

 and has the abdomen indistinctly tufted. The male antennae in both are 

 simple. This peculiar genus resembles in armature Mycteroplus of 

 Europe, which, however, has naked eyes. Its affinities are with Ma- 

 mestra rather than Tcenioeampa, and the species are not unlike some of 

 the pale agrotids in habitus. 



Tricholea decepta Grt. 

 Papilio 3, 30, 1883. 



Luteous gray, more or less irrorate with black. Median lines indis- 

 tinctly geminate ; t. a. upright, waved, included space somewhat 

 paler ; t. p. crenulate, its coarse nearly parallel with the outer margin. 

 Basal line distinct, geminate, blackish. A distinct, rather narrow, 

 dusky shade through outer portion of median space, darkening the 

 reuiform. S. t. space darker than ground color, defining the rather 

 evenly dentate s. t. line. A termiual row of black lunules. Claviform 

 variable in size, but usually distinct, narrowly black lined. Orbicular 

 round, small, concolorous, black ringed. Reniform moderate, black 

 ringed, interiorly dusky. Secondaries pearly white with broad dusky 

 outer margin, and sometimes a transverse row of venular points. Be- 

 neath white, outwardly powdery; a distinct, dotted, common line, 

 rather large discal dot on both wings. The genitalia are distinctive. 

 The harpes are abruptly bent toward the tip, which is rounded, and 

 inwardly spinulose. There is a short, stout, acute corneous basal proc- 

 ess; near to the bend of the harpes is a rather long, curved, cor- 

 neous hook, and between the two a broad, flat, somewhat' spatulate, 

 semi-membraneous process. Expands 1.12 to 1.28 inches (28 to 32 mra ). 



Habitat.— Arizona. 



Several specimens are before me. A single rubbed female from Cali- 

 fornia iudicates a new species. The front is much as iu decepta, but 

 with an added small tubercle. It is rather larger, paler in ground 

 color, but more densely powdered with black. Pending the discovery 

 of the male I leave it undescribed. 



Tricholea edwardsii Smith. 

 Proc. U. S. Nat, Mus., 188T, x, p. 478. 

 Powdery ash gray; terminal space distinctly paler. Basal line indi- 

 cated by a geminate black spot on median vein. T. a. line marked on 

 costa only, and by a small brownish dot in place of claviform. T. p. 

 line marked by a series of dark venular points, and an incomplete line 

 of white scales. Median shade marked on costa. S. t. liue marked 

 by the pale terminal space, and a row of dusky spots. A row of small 



