Male, underside: primaries: Ground color yellow-brown. 
Marginal line incomplete toward inner (anal) margin. A sub- 
marginal row of crescents, the anterior five pearly white. Medial 
to this row, a blackish shading. Limbal and discal areas clear 
yellow-brown except for partial delicate black lineation of the 
nervules, and an area along the costal margin. A black cuboid 
spot next to costal margin of this area is bordered laterally by 
two small pearly-white spots, and medially by a yellow area. 
Just lateral to outer margin of disc, an oblongate black spot. 
Disc crossed by two delicate black lines. Inner (anal) margin 
lighter than ground color. A black irregular spot in the discal 
area between the submedian vein and first median nervule. 
Underside, secondaries: Ground color yellow-brown, overlaid 
by a series of pearly-white spots and bands, the latter giving a 
predominant pearly lustre to the wing. Fine double marginal 
line, bordered medially by a row of seven lunate pearly-white 
spots. Medial to this, a band of yellow-brown spots, shaded 
outwardly with fine yellow scales and margined with black. 
Medial to this a broad band of pearly-white oblongate spots, 
delicately margined with black. The discal and basal area, pre- 
dominantly yellow-brown, with several lustrous spots overlaid 
thereon, the latter finely margined with black. 
Antennae: Brownish-black, the club black, tipped with brown. 
Thorax blackish-brown above, greyish below. Legs and palpi, 
yellow-brown. Abdomen blackish-brown, annulated with yellow- 
brown. Below greyish white. 
Female: Differs from the male as follows: expanse, \y 2 to \y% 
inches : 37.5 to 41 mm. Above, black lineations lighter and tend- 
ing toward suppression in certain areas. Ground color a shade 
lighter and more uniform. In the limbal area on upper side 
of secondaries there is a tendency for less of the dark lineations, 
giving the wing a more open appearance. Basal area lighter. 
Sabina differs from gabbi, its nearest relative, in several im- 
portant particulars. The pearly-white spots on the under side 
are much less lustrous in sabina. Those on the apex of primaries 
are five in number, are large, well defined crescents, and are 
in alignment, whereas in gabbi these lunules are reduced, the 
anterior three only being prominent, the next two much closer 
to the margin and very small. On the secondaries the sub- 
marginal row of pearly lunules is relatively a little larger in 
sabina. The black shading internal to this row is more pro- 
nounced in gabbi. The female of sabina suggests a close rela- 
tionship to neumoegeni, particularly in its uniform ground color 
and lighter lineation. The male, on the other hand, shows close 
gabbi affinity. Perhaps it may develop that Southern Arizona 
represents the evolutionary habitat from which divergence oc- 
31 
