8. Conops parvus, n. sp.
Female. Closely allied to C. sylvosus Williston, but differs in the lighter colored antennae and their more elongated third joint, which is as long as the first two joints together; in the wings being wholly grayish hyaline, save a quadrate brown spot in front a little beyond the middle; and in the lighter colored legs and abdomen. The proboscis is as long as the antennae; the legs are brown or brownish yellow.
Length 8 millimeters. Two specimens, Chapada, H. H. Smith.
Explanation of Plates.
[Plate I]. Skull of Pteranodon sp., one-fifth natural size.
[Plate II]. Left front paddle of Clidastes velox Marsh, two-thirds natural size. C, coracoid; S, scapula; H, humerus; I, first digit; V, fifth digit.
[Plate III]. Left hind paddle of Clidastes velox Marsh, two-thirds natural size. Il, ilium; P, pubis; Is, ischium; F, femur; T, tibia; Fb, fibula; I, first metatarsal.
[Plate IV]. Right front paddle of Clidastes Westii Williston, one-third natural size. S, scapula; C, coracoid; H, humerus; R, radius; U, ulna; I, IV, first, fourth digits.
[Plate V]. Right hind paddle of Clidastes Westii Williston, one-half natural size.