Type Material

Holotype: “Male holotype and female allotype from Taft, California, February 25, 1921 (E.O. Essig), in the American Museum of Natural History” (Muma, 1962, p. 17).

Chelicerae Description: "Dentition of chelicerae as shown in figures 10 and 11. Movable finger with a large, slender, principal tooth and one small intermediate tooth located at base of principal tooth. Fixed finger long, slender, and lightly bowed and arched. All fondal teeth distinct from dentate socket margin of movable finger. Fondal teeth graded in size I, III, II, IV. Fondal notch J-shaped, somewhat wider than base of fixed finger and containing one denticule" (Muma, 1962, p. 15-16).

Chelicerae Setal Description: "Groove of fixed finger a shallow, parallel-sided slot that is mesoventral but not extending to base of finger. Flagellum complex typicall of group, with dorsal tubuar bristles not strongly arched and apical plumose bristles slightly S-shaped but not flattened or otherwise modified. Mesal setae of movable finger plumose on proximal half of finger but simple distally" (Muma, 1962, p. 16).

Ctenidia Description: "First post-spiracular abdominal sternite provided with four long flattened ctenidia extending well beyond posterior margin of succeeding segment (fig. 13)" (Muma, 1962, p. 16).

Eremochelis arcus  – male holotype

“Male holotype and female allotype from Taft, California, February 25, 1921 (E.O. Essig), in the American Museum of Natural History” (Muma, 1962, p. 17).

AMNH

(All measurements in sp description except papillae segments)

Measurements: