Type Material

            Holotype: “Male holotype from 0.5 miles south of La Virgen at 2,000 ft., Baja California Norte, Mexico on April 9, 1969 by S. C. Williams, deposited in the California Academy of Science in San Francisco. Male paratype from Socorro Sand Dunes at 100 ft., Baja California Norte, Mexico on April 6, 1969 by S. C. Williams, deposited in the American Museum of Natural History” (Muma, 1987, p. 6).

            Measurements: Males: Total Length, 20.0-21.0 mm. Chelicera 5.5-5.5 mm length; 2.3-2.3 mm width. Propeltidium, 3.9-4.2 mm length; 2.2-2.1 mm width. Palpus, 19.0-19.5 mm length; CL/CW=2.39 width. Leg 1, 15.0-16.0 mm length; PW/PL=1.86 width. Leg 4, 24.0-25.0 mm length; A/CP=6.17 width. Holotype larger measurements.

            Palpal Description: “The specimens also have a mesoventral row of 6 or 7 distinguishable spine-like setae apically on the palpal femur and basally a mesoventral rrow of 4 distinguishable spine-like setae on the palpal tibia” (Muma, 1987, p. 5-6).

            Chelicerae Description: “presence of a distinct mesal tooth, the obscure bilobed anterior tooth and the laterally viewed obscure ventral notch of the movable cheliceral finger. The fondal notch is equally as deep as wide and narrower than the basal width of the fixed cheliceral finger” (Muma, 1987, p. 5).

Diagnosis: “E. pallidus Muma and Brookhart seems to be the most closely related species but the lack of ctenidia in this species and the nearly indistinguishable anterior tooth are indistinctive. Females are unknown” (Muma, 1987, p. 5).

Other Information: