294 FAMILY IX. SCYDM/ENID.E. 



re. Head nliiiost as wide as thorax; secondary male characters con- 

 fined to the sixtli ventral ; autennal club stronger, more abrupt 

 and more bead-like. bicolor. 



hi). Elytra very pubescent ; head with dense, stiff hairs directed back- 

 ward; clji^eo-frontal suture absent; antennae with a short nbrujit 

 club, the eighth and ninth joints subequal in width. 

 c. Larger. IM mm.; elytra not concave toward base; eighth antenna! 

 .joint as large as ninth. 570. occultus. 



cv. Smallei-. not over 1.2 mm. ; eighth autennal joint distinctly smaller 

 than ninth. 571. similis. 



aa. Autennal club 3-jointed. 



/. Head and elytra glabrous; thorax with four basal fovete; antemue 

 long and slender, the joints all longer than wide. 



572. SALINATOR. 



ff. Head and elytra distinctly but sparsely pubescent; thorax with a 

 well defined carina each side extending obliquely to base; antennal 

 club darker in color than the stem. 

 //. Eighth antennal joint fully as long as wide; elyti'a not inflated. 



573. FATUiJs. 

 (/</. Eighth joint distinctly wider than long, the club stouter. debius. 



568 (183S). EucoNNUS clavipes Say. Long's Sec. Exped., II, 1824, 272; 

 ibid. I, 179. 

 Oval, feebly inflated. Head black; thorax and under surface piceous; 

 elytra dark reddish-brown, shining, the sides and tips blackish ; antennae 

 and legs reddish-brown. Antenn;p slender, three-fifths as long as body, the 

 last four joints longer than wide and one-half thicker than those of stem. 

 Thorax as long as wide, narrowed at base, broadly rounded in front, the 

 fovea? deep, distinct. Elji:ra two-fifths longer than wide, each with a small 

 deep fovea at middle of base and a rather strong humeral fold. Four front 

 femora strongly club-shaped. Length 1.5 mm. 



Lake. JMarshall and Craw^ford countie-i; frequent in Lake, scarce 

 in tho otiiers. ]\Lnrch 26-]\ray 28. The fonrtli and fifth ventral 

 sesfments of males each l^ear a short, thick disca] plate, siihdentate 

 on sides. 



5G9 ( ). p;]ucoNNUs SEMiRUBER Casey, Ann. N. Y. Acad. Sci., IX, 1897, 



368. 

 Oval, rather robust. Black, shining, not punctate; elytra dull red; 

 anteiuL-e and legs reddish-piceous. Head not quite as long as wide; an- 

 tenn;e slender, half the length of body, the club loosely formed, its joints 

 gradually larger. Thorax as long as wide, feebly narrowed at base; trans- 

 verse im])ression distinct, the foveji? minute. Elytra two-fifths longer than 

 wide, twice as wide as tlmrax : humeral fold long and strong; subhumeral 

 iinpi'ession long, wide .-uid deep. Length 1.3-1.5 mm. 



IMarion County; scarce. Deceml)er 1. Taken in nest of ants 

 from lieneath beech log. Described from northern and centra.1 

 Illinois. 



