666 FAMILY XXIX. — MIRIDyE. 



/. Hind margin of pronotum subtruncate; mesoscutum without a 



deep fovea each side. 

 g. Median longitudinal sulcus of vertex deep, distinct; joint 1 of 

 antennae as long as pronotum and scutellum united; eyes 

 contiguous with front angles of pronotum; body almost 

 glabrous. IV. Megalocer^ea, p. 671. 



(/(/. Median sulcus of vertex nearly or quite obsolete; joint 1 of 

 antennae not longer than pronotum; eyes slightly distant 

 from front angles of pronotum; body clothed with fine long 

 suberect pubescence. V. Miris, p. 671. 



//. Hind margin of pronotum deeply concavely sinuate; meso- 

 scutum broadly exposed, with a large deep oblique fovea each 

 side and a distinct transverse impressed line behind the 

 foveae. VI. Eioneus, p. 673. 



ee. Antennal segments clothed with very fine pubescence; body nearly 

 glabrous, at most with very short pubescence; hind margin of 

 pronotum deeply concave, leaving the mesoscutum broadly ex- 

 posed. 

 h. Head long and pointed, its front projecting sharply beyond base 

 of antennae; median sulcus of vertex deep; basal joint of 

 antennae not so long and attenuate as in hh. 



VII. Trigonotylus, p. 674. 

 hh. Head short and flattened, its front scarcely projecting beyond 

 the base of antennae; median sulcus of head replaced by a 

 broad and shallow basin; basal joint of antennae slender, 

 curved, thickest near base, then tapering and slightly en- 

 larged at apex. VIII. Teratocoris, p. 677. 

 aa. Pronotum distinctly swollen at middle, as wide or wider there than 

 at base. 

 i. Head constricted into a short neck behind the eyes; basal joint of 

 antennae longer than width of vertex; tylus convex, its base dis- 

 tinct from the front; pronotum extending back to basal angles 

 of elytra. IX. Mimoceps, p. 679. 

 ii. Head not constricted behind the eyes; basal joint of antennae 

 shorter than width of vertex; tylus flattened, merged with the 

 . front; pronotum not extending back to basal angles of elytra. 



X. Pithanus, p. 680. 



I. Collaria Provancher, 1872, 79. 



Elongate, slender, pubescent species having the head porrect, 

 prolonged forward, its front declivent; vertex with a median 

 longitudinal groove and a transverse impression between base 

 of eyes, thence feebly narrowed backward into a neck ; tylus 

 prominent, strongly shining; antennae about as long as body, 

 joint 1 stoutest, as long as or slightly longer than width of 

 head, 2 about three and one-half times as long as 1, 3 and 4 

 more slender, the former one-third or more the longer; beak 



