452 FAMILY XV. — TINGIDIDjE. 



d. Lateral carina of pronotum abbreviated, not extending forward 

 to hood; hood compressed in front, bulbous behind, usually dis- 

 tinctly higher than median pronotal carina. 

 e. Side margins of paranota and basal portion of costal margins 

 of elytra usually furnished with a fringe of small spines; 

 costal margins of elytra usually in great part parallel, rarely 

 slightly concave. II. CORYTHUCA, p. 453. 



ee. Side margins of paranota and elytra without spinules; margins 

 of elytra convexly rounded, never parallel, the costal area 

 much expanded behind middle. III. Stephanitis, p. 468. 



dd. Lateral carina of pronotum entire, reaching hood; margins of 

 paranota and costal margin of elytra with a fringe of fine 

 hairs; hood compressed throughout its length, viewed from 

 the side scarcely as high as median carina. 



IV. Leptobyrsa, p. 469. 

 cc. Hood elongate, curved downward over the head, its crest with a 

 single row of cells each side of median carina; elytra without 

 tumid elevations, but with margins of discoidal areas strongly 

 elevated. V. Corythaica, p. 470. 



bb. Pronotal hood small, viewed from the side compressed, not extend- 

 ed over the head ; median carina of pronotum but little more ele- 

 vated than lateral ones; basal third of elytra without elevations. 

 /. Third antennal segment much thickened, rugose and bearing nu- 

 merous short erect seta. VI. Dictyonota, p. 472. 

 //. Third antennal segment slender, usually without seta. 



g. Median groove of sterna interrupted by a transverse sinuous 

 carina between the meso- and metasternum; costal areas of 

 elytra much expanded, not parallel at base, furnished with 

 four or five rows of areola. VII. Gargaphia, p. 472. 



gg. Median groove of sterna not interrupted by a cross carina. 

 h. Pronotum tricarinate, the carina entire, reaching hood; side 

 margins of paranota without spines. 

 i. Form elongate, slender; costal area of elytra subparallel at 

 base, sinuate and narrowed at or behind middle; paranota 

 not formed of two membranes united on the outer edge. 



VIII. Gelchossa, p. 475. 

 ii. Form oval ; costal area of elytra broadly curved, not narrowed 

 at middle; paranota formed of an upper and lower mem- 

 brane which are separated on outer edge by a membrane 

 containing a single row of cells. IX. Leptodictya, p. 477. 

 hh. Pronotum with only a median carina; side margins of paranota 

 with prominent processes or spines. 



X. ACANTHOCHEILA, p. 479. 



I. Galeatus Curtis, 1833, 196. 



Relatively large species, having the head armed with five 

 long, acute black spines ; paranota strongly flattened and re- 

 flexed, each with a single row of five areolae, the three inner 



