TRIBE III. — PHYSATOCHEILINI. 483 



/. Antennae not clavate, the third joint not more than three times 

 as long as fourth. 

 g. Paranota long, narrow, with three rows of very small cells ; 

 median pronotal carina raised in front to form a small 

 flat hood. IV. Tingis, p. 487. 



gg. Paranota with but one row of cells or none; hood indistinct 

 or entirely wanting; form narrow, elongate, somewhat re- 

 sembling that of Gelchossa. V. Teleonemia, p. 487. 

 //. Antennae with third segment more or less clavate and more 

 than three times the length of fourth. 

 h. Third antennal cylindrical, enlarged near tip; dorsal surface 

 of elytra flat; reflexed side margins of pronotum as high as 

 the carina?. VI. Melanorhopala, p. 490. 

 hh. Third antennal gradually thickened from the base ; dorsal 

 surface of elytra convex; reflexed margins of pronotum 

 lower than the carina?. VII. Hesperotingis, p. 493. 

 ee. Beak not surpassing front coxae; head without spines, but with 

 a short, obtuse median tubercle; paranota with margins flat- 

 tened, membranous and with a single row of cells; form ob- 

 long, very depressed. VIII. Atheas, p. 494. 

 aa. Pronotum unicarinate, the median carina only distinct, traces of 

 the others sometimes visible on posterior half. 

 i. Paranota represented only by a small pale ear-like appendage at 

 each lateral angle; joint 1 of antennae one-half longer than 2. 



IX. PSEUDACYSTA, p. 497. 



ii. Paranota distinct, but very narrow, carina-like, not reflexed ; joints 

 1 and 2 of antennae subequal in length. X. Leptoypha, p. 498. 



I. Physatocheila Fieber, 1844, 80. 



Small oblong or elongate-oval species having the head fur- 

 nished with five appressed spines ; antenna? rather slender, 

 joint 1 stouter and one-half longer than 2 ; 3 more slender and 

 longer than the others united, 4 fusiform ; middle of apical 

 fourth of pronotum slightly compressed to form a triangular 

 hood-like elevation which projects very little if at all over the 

 base of head; pronotum with carinse low, entire, its posterior 

 process elongate-triangular with tip acute ; elytra much wider 

 than abdomen and surpassing its tip, the discoidal areas reach- 

 ing beyond their middle ; costal areas rather widely flattened 

 and with two or three rows of cells. Five species occur in 

 North America, four in the eastern states. 



KEY TO EASTERN SPECIES OF PHYSATOCHEILA. 



a. Beak not extending beyond the apex of the rostral sulcus. 

 b. Smaller, length less than 4 mm. ; third antennal not enlarged at 

 apex. 



