THE ANT-LOVING BEETLES. 



307 



589 (1863). Adeanes lecontei Brend., Proc. Ent. Soc. Phil., VI, 1865, 255. 



Brownish-yellow ; pubescence fine, in regular rows. Head twice as long 

 as broad ; vertex with two shallow longitudinal impressions. Last antennal 

 joint as long as head, slightly curved, squarely truncate, narrower at its 

 outer end. (Fig. 4, No. 10.) Thorax bell-shaped, slightly longer than head, 

 base twice as wide as neck ; disk with an obtuse tubercle behind the middle 

 and a shallow fovea each side near base. Elytra triangular, at base scarce- 

 ly wider than thorax, thence rapidly widening to the truncate apex. Ab- 

 domen much wider than elytra, the first dorsal segment very large, broadly 

 and deeply concave, its margin curved and convolute near base. Length 

 2.5 mm. (Fig. 146, &.) 



Posey County; rare. August 3. Taken from nest of the ant, 

 Lasius niger americanus Emery. 



II. Fustiger Lec. 1866. 



Eyes present but very small, having only eight facets each ; an- 

 tennas with the basal joint small, quadrate; second joint as long as 

 head, gradually broader to apex, which is three times as wide as 

 base. 



Fig. 146. a, Chennium monilicorne; b, Adranes lecontei; c, Fustiger fuchsii; d, Tyrus humeralis. All 

 highly magnified. (After Brendel.) 



590 (1864). Fustigek fuchsii Brend., Proc. Ent. Soc. Phil., VI, 1866, 190. 



Dark brownish-yellow, translucent. Head flattened above and, like the 

 thorax, marked with a network of large shallow impressions. Thorax sub- 

 globular, equal to the head in length, sides rounded, base and apex trun- 

 cate. Elytra at base as wide as thorax, thence gradually widening to apex, 

 disk sparsely and very finely pubescent and behind the middle sloping down- 

 ward to the deep transverse abdominal fovea. Abdomen convex, broader 

 than elytra, the basal segment very large, longer than wide. Length 1.7 mm. 

 (Fig. 146, c.) 



Crawford County; scarce. May 17-August 15. Taken from 

 ants' nests beneath stones on slopes of high hills near Wyandotte 

 Cave. 



