pecimens examined in lacking pairs of postanal white spots,
and in having smooth backs (slightly pustulate in MSU 4088).
The tibiotarsal articulation fails to reach the eye in KU
63330. The small inner palmar tubercle is continuous with the
large median tubercle on the right hand of KU 63330, and
lacking on both hands of KU 63329 and on the left hand of KU
63328. The tip of the tongue is entire in some specimens and
in others has an irregular margin.

_Coloration of living specimens._--Marbled pattern on back
and top of head of dark brown to blackish on yellowish-gold;
pattern slightly less contrasting on limbs than on back,
consisting of brown to grayish on pale yellow; side of head
and body grayish sometimes having pale yellow to whitish
spots; iris blackish having fine reticulation of yellowish to
greenish-gold; venter dirty white.

_Habitat._--The three records of occurrence for _Tomodactylus
saxatilis_ are in a mixed boreal-tropical habitat, which is
transitional between a pine-oak forest at higher elevations and a
tropical deciduous forest at lower elevations. The mixed
boreal-tropical habitat is most conspicuous at elevations between
approximately 7800 and 5500 feet on southerly exposed slopes of
barrancas and arroyos of the dissected plateau of the Sierra Madre
Occidental. The mixed boreal-tropical habitat occurs for approximately
30 miles along the paved highway (Mexican Highway 40) between Cd.
Durango, Durango, and Mazatlan, Sinaloa. The records of occurrence in
those states that are along this highway are separated by 14.5 miles
(_via_ road).

[Illustration: FIG. 1. _Tomodactylus saxatilis_ new species,
adult male, KU 63326, holotype (x 2), dorsal view.]

The terrain consists of occasional level areas, but is mostly of steep
hillsides. Dominant trees are large oaks and pines; a characteristic
pine is the sad or drooping-needle pine, locally called "pino triste."
The vegetational cover is usually open, including grasses, small oaks
and pines, broad-leaved shrubs and herbs, prickly pears, magueys,
thorny acacias, bracken fern, and epiphytes in trees. Ferns occur in
moist protected places, and orchids are occasional, sometimes in
trees.

Outcrops of rock, boulder-strewn areas, and occasional rock slides
(talus) also characterize the terrain. _Tomodactylus saxatilis _seems
to be restricted to rocky habitats. The individuals collected were
det