SUBFAMILY IX. — ZELIN.E. 567 



species being known, 40 or more of which occur in America 

 north of Mexico. These are divided among 13 genera, 11 of 

 which are represented in our territory. 



KEY TO EASTERN GEXEKA OF ZELIN43. 



a. Sides of mesosternum without a small tubercle in front near the 

 hind angles of the prosternum (Tribe Zelini). 

 b. Front femora as long as or longer than hind ones; joint 1 of beak 

 much shorter than joint 2, usually shorter than front lobe of 

 head. I. Zelus, p. 568. 



bb. Front femora shorter than hind femora or, if subequal in length, 

 joint 1 of beak as long as or longer than joint 2. 

 c. Joint 1 of beak shorter than joint 2. 



d. Legs and antennae not annulate with black and yellow rings ; 



joint 4 of antennae longer than 3; joint 1 of beak not longer 

 than head in front of eyes. II. Rhynocoris, p. 572. 



dd. Legs and antennae strikingly annulate with black and yellow 

 rings; joint 3 of antennae longer than 4; joint 1 of beak dis- 

 tinctly longer than head in front of eyes. 



III. PSELLIOPUS, p. 573. 



cc. Joint 1 of beak as long as or longer than joint 2. 



e. Disk of hind lobe of pronotum armed with four prominent spines. 

 /. Apical angles of ends of ventrals 3 — 5 not prolonged; third 



joint of antennae of male not enlarged and flattened; cheeks 

 with a long erect acute spine behind the base of each antenna. 

 g. Hind portion of head, as viewed from the side, gradually nar- 

 rowed into a neck; spines of cheeks pale, their length less 

 than half the interocular width; elytra wholly pale. 



IV. ROCCONOTA, p. 575. 



gg. Hind portion of head at its middle suddenly constricted into a 



neck; spines of cheeks black, nearly as long as interocular 



width; elytra in great part black. V. Repipta, p. 576. 



//. Apical angles of ends of ventrals 3 — 5 prolonged backwards 



into distinct spines ; male with basal half of third antennal 



much enlarged and flattened; cheeks with a short, acute erect 



spine. VI. Atrachelus, p. 577. 



ee. Disk of hind lobe of pronotum without spines or with very short 



ones. 



h. Apex of femora without spines; hind portion of head usually 



suddenly constricted into a neck some distance behind the 



eyes; body not linear; elytra often much abbreviated. 



VII. Fitchia, p. 578. 

 hh. Apex of femora armed each side with a short slender spine; 

 hind portion of head gradually narrowed to base; body linear; 

 elytra always entire. VIII. Doldina, p. 580. 



act. Sides of mesosternum with a small tubercle or fold in front near 

 hind angles of prosternum; joint 1 of beak longer than front por- 

 tion of head (Tribe Harpactorini) . 



