THE ANT-LIKE STONE BEETLES. 295 



570 ( ). EucoNJsrus occultus Casey, Ann. N. Y. Acad. Sci., IX, 1897, 



372. 

 Rather narrow, feebly inflated. Uniform pale reddish-brown, shining. 

 Head wider than long, broadly rounded at base. Antennae one-half the 

 length of body, the club abrupt, its joints wider than long. Thorax as long 

 as wide, but slightly wider than head, sides rounded in front, sinuate be- 

 hind; disk sparsely clothed with suberect hairs and with two fovese each 

 side near base, the outer one very small. Elytra one-half longer than wide, 

 each with a humeral fold, and a fovea near middle of base; disk minutely 

 and sparsely punctate and rather thickly clothed with yellowish suberect 

 hairs. Length 1.6 mm. 



Marshall, Putnam and Marion counties; scarce. J.fay 20-No- 

 vember 30. Taken by sifting decaying vegetable debris. 



571 ( ). EucoNNUs siMiLis sp. nov. 



Shorter and more robust than occultus. Rather dark reddish-brown, 

 Shining; antennse and legs paler. Head almost as wide as thorax, its sides 

 with dense, bristle-like hairs directed backward. Antennas short, stout, 

 slightly longer than head and thorax, the joints bead-like, eighth to tenth 

 rounded, less transverse than in occultus; eighth two-thirds the size of 

 ninth, which is equal to tenth; eleventh one-half longer. Thorax as long 

 as wide, sides nearly straight, disk sparsely pubescent and with a deep, 

 transverse impression at base ; this, with a rather large fovea each side 

 near the hind angles. Elytra ovate, together one-half wider and twice as 

 long as thorax ; humeral fold short, feeble ; basal fove:ie small, shallow ; 

 surface sparsely clothed with fine yellowish pubescence. Length 1.2 mm. 



Putnam County; rare. April 17. 



572 (1841). EucoNNUs salinatoe Lee, Proc. Phil. Acad. Nat. Sci., VI. 



1852, 154. 



Rather robust. Blackish-piceous, shining; el3d;ra with a dark reddish 

 tinge ; antennae black, reddish-brown at base. Head nearly as long as wide ; 

 occiput with a bristle-bearing puncture each side. Antennte with joints 

 3-7 equal, eighth one-half longer, ninth and tenth slightly longer and one- 

 half thicker than eighth. Thorax as long as w-ide, but slightly wider than 

 head ; disk clothed with erect black hairs and with four toveie at base, the 

 inner two the larger. Elytra two-fifths longer than wide, two-thirds v.-ider 

 than thorax ; without humeral fold, but each with a deep fovea at middle 

 of base. Length 1.5 mm. 



Lake and Posey counties; scarce. IMarch 26-April 27. 



573 (1842). BucoNNtJS fatdtjs Lee., Proc. Phil. Acad. Nat. Sci., Yl, 1852. 



155. 

 Rather stout, feebly inflated. Piceous-black, shining, flnely and sparse- 

 ly pubescent ; legs and antenna dull brownish-yellow, the club darker. Head 

 rounded, not quite as long as wide; nearly as wide as thorax. Antenna; 

 slender, slightly longer than head and thorax; club abrupt and parallel. 

 the ninth and tenth joints nearly twice as wide as eighth. Thorax not 

 quite as long as wide, sides rounded ; disk with a transverse basal impres- 



