141 (1) (52-3/4). Body of a horny or leathery nature; head sunk into a hollow in the thorax (plate VI, 35). No proper proboscis or palpi; claws very large (plate VI, 36). Perfect insect parasitic.

EPROBOSCIDEA—

142 (145). Head fairly large; wings sometimes shed or absent.

143 (144). Eyes, ocelli, scutellum, halteres, and wings all absent; last tarsal joint combed with bristles.

Braulidæ, LIX

144 (143). Eyes and scutellum present; last tarsal joint with well developed claws.

Hippoboscidæ, LVIII

145 (142). Head small, when at rest thrown back upon the dorsum; always wingless.

Nycteribidæ, LX