212 FAMILY VI. — COREIDjE. 



borders of a pond (W.S.B.). Mobile, Ala., June (Gerhard). 

 This species has been generally confused with distinctus and it 

 is therefore impossible from the published records to give its 

 approximate range. Barber (1914, 518) states that "it is con- 

 fined, as far as my knowledge goes, to the extreme southeast- 

 ern United States." He records it from Ft. Myers, Indian Riv- 

 er and Lakeland, Fla. Bueno and Engelhardt (1910, 149) 

 record both species from Wilmington, N. Car., and typhceus also 

 from Virginia Beach, Va. The two species are easy to separate 

 when one has specimens of both in hand, but quite difficult 

 from the literature extant. 



Subfamily II. COREIN7E Stal, 1867, 535. 



This subfamily, as defined in the key, comprises the great 

 majority of our species of Coreidse and for convenience of 

 classification is subdivided into eight tribes, all of which are 

 represented in the eastern United States. 



KEY TO TRIBES OF SUBFAMILY OOREIX.E. 



a. Hind tibiae in both sexes dilated on one or both sides (fig. 43) to 

 form a thin foliaceous plate. 

 6. Head but little prolonged in front of bases of antennae; tylus longer 

 than cheeks, compressed between them and projected upward be- 

 tween the antenniferous tubercles in the form of a triangular 

 spine; basal joint of antennae at least one-half longer than head. 



Tribe I. Acanthocephalini, p. 213. 



bb. Head narrowed in front and much prolonged beyond the bases of 



antennae; tylus longer than cheeks, compressed and deflexed in 



front of them; basal joint of antennae but little if any longer 



than head. Tribe II. Anisoscelini, p. 219. 



<ta. Hind tibiae simple, terete or subcylindrical. 



c. Head as long, or nearly as long, as pronotum, distinctly narrowed 

 and prolonged in front of bases of antennae; femora armed 

 beneath. 



d. Second and third joints of antennae not triquetrous or three-sided ; 



cheeks not porrect or distinctly shorter than tylus. 



Tribe III. Leptoscelini, p. 226. 

 dd. Second and third joints of antennae triquetrous; cheeks porrect, 

 shorter than tylus, their tips subcorneal. 



Tribe VII. Chelidinini, p. 240. 

 cc. Head not over two-thirds the length of pronotum, but little pro- 

 duced forward in front of bases of antennae. 



e. Hind femora armed beneath with a number of teeth and in the 



males strongly swollen ; front side margins of pronotum finely 

 toothed or crenulate. Tribe IV. Mictini, p. 228. 



