106 
nences. We take pleasure in naming the species after Mr. Spalding, the 
well-known collector. 
Porta (MAMESTRA) APURPURA sp. nov. (PI. VII, Fig. 2). 
Palpi and front very roughly haired, dark gray-brown shaded with black; 
collar dark gray crossed by a blackish median line and tipped with whitish; 
thorax and patagia dark gray-brown, grizzled; abdomen smoky-ochreous; 
antennae in @ strongly serrate and fasciculate; primaries very deep even gray- 
brown with maculation clear-cut and contrasting; a black dentate basal % line 
followed by a pale gray shade-line; t. a. line geminate, inner line indistinct, 
outer line blackish, filled with light gray, very strongly dentate in submedian 
fold and above inner margin, in general course perpendicular to inner margin; 
orbicular large, oval, touching t. a. line, filled with pale gray and slightly out- 
lined with blackish; claviform small, outlined in black, resting on submedian 
tooth of t. a. line; reniform large, lunate, annulate with pale gray and black 
and filled with a gray shade very little lighter than ground color of wing, 
followed to t. p. line by slight ochreous shading; median shade very faint, 
slightly visible in costal portion of wing; t. p. line single, blackish, starting from 
middle of costa and strongly bent out around reniform, then parallel to outer 
margin and prominently dentate on the veins, followed by a faint pale gray 
shade line, representing the filling of a geminate line in which the outer line is 
obsolete; s. t. line pale, very irregular, preceded by black-brown velvety shading, 
the most prominent portion of the maculation, oblique from costa to vein 7, 
with slight tooth on vein 8, then bent out strongly towards margin and again 
oblique and slightly irregular to below vein 5, forming on veins 3 and 4 a 
prominent W mark which almost touches outer margin, oblique again to sub- 
median fold and then bent out to anal angle, the black shading most prominent 
below the W mark; terminal lunulate dark line and pale line at base of fringes; 
fringes dark, slightly cut by pale ochreous opposite the veins. Secondaries 
creamy, shaded with smoky, especially strongly in subterminal area; traces of a 
diffuse postmedian line; dark terminal line; fringes smoky, paler towards anal 
angle. Beneath smoky, paler towards base, both wings crossed by a broad 
smoky postmedian line, marked more strongly on the veins. Expanse 46 mm. 
Hasitat. White Mts., Ariz. (Lusk) 5. Type, Coll. Barnes. 
This species belongs in the purpurissata group, but may be dis- 
tinguished by its much deeper coloration and the much more promi- 
nent W mark of subterminal line. 
Porta (MAMESTRA) LUSKI sp. nov. (PI. VII, Fig. 8). 
Collar gray tipped with brown and crossed by a dark median line; thorax 
gray-brown, abdomen ochreous; primaries brown, suffused with light purple- 
gray, costa light ochreous at base, a slight black basal dash below median vein 
and a black angular mark above inner margin near base preceded by light 
ochreous scaling; t. a. line black, outwardly inclined, geminate, inner line faint, 
filled with pale purple-gray shade, angled three times, in cell, in submedian fold 
