mm. Sides of the pronotum neither dilated, nor reflexed, fringed with less dense and nearly straight hairs; hemelytra with the apical margin distinctly rounded. Parasitic on man, birds and bats. Occurs in the old world, Brazil and the West Indies. C. hemipterus Fabr. (= rotundatus)
ll. Body clothed with rather longer silky hairs; third and fourth segments of the antenna somewhat more slender than the first and second; anterior margin of the pronotum very slightly sinuate or nearly straight in the middle, produced at the lateral angles. This is the species which in American collections is known as C. hirundinis, the latter being an old world form. It is found in swallows nests. O. vicarius. Oeciacus Stäl
kk. Beak long, reaching to the posterior coxæ; scutellum rounded at the apex; lateral margins of the elytra strongly reflexed, apical margin slightly sinuate toward the middle; intermediate and posterior coxæ sub-contiguous. This species infests poultry in southwest United States and in Mexico. H. inodorus. Hæmatosiphon Champ.
jj. Ocelli present, if rarely absent in the female, then the tarsus has two segments; or if with three tarsal segments, the wing membrane with one or two cells.
k. Beak four-segmented, or with two-segmented tarsi. Isometopidæ, Microphysidæ, and some Capsidæ.
kk. Beak three-segmented.
l. Hemelytra with embolium; head horizontal, more or less conical; membrane with one to four veins, rarely wanting. Anthocoridæ
Several species of this family affecting man have been noted, Anthocoris kingi and congolense, from Africa and Lyctocoris campestris from various parts of the world. Lyctocoris fitchii Reuter ([fig. 19 j]), later considered by Reuter as a variety of L. campestris, occurs in the United States.
ll. Hemelytra without embolium. Superfamily Acanthioidea (= Saldæ Fieber and Leptopodæ Fieber)
ii. Posterior coxæ rotating.