THE ANT-LOVING BEETLES. 



319 



606 (1922). Bryaxis illinoiensis Br end., Proc. Ent. Soc. Phil.. VI, I860, 

 195. 



Rather broadly ovate. Piceous-black, shining ; elytra dark red ; an- 

 tenna? reddish-brown, legs and palpi paler. Antennae less than one-half the 

 length of body; joints 2-8 small, rounded; ninth obconical, longer; tenth 

 twice as wide as eighth ; eleventh oblong-oval, twice as thick as ninth. 

 Thorax wider than long, the fovese very large. Elytra one- third longer 

 than thorax, sutural and discal lines distinct, parallel, the latter deep at 

 base and reaching apical fifth. First dorsal of male deeply concave, pro- 

 longed behind in two acute triangular lobes ; second dorsal with a large 

 median fovea. Length 1.8 mm. (Fig. 150, a.) 



Throughout the State; common. March 20- June 24. On May 

 (') I took scores of this species beneath driftwood on 'the mud banks 

 of the Ohio River near Charleston, Clark County. 



B. perforata Brend., is said in Br en del & Wickham's key to oc- 

 cur in "Michigan, Illinois and Iowa," and in the description Avhich 

 follows "in New York, Jersey and Long Island." 



Fig. 150. a, Bryaxis illinoiensis; b, Rcichenbachia gracilis; c, Rcichenbachia congener; d, Reivhenbachia 

 propinqua (male). All highly magnified. (After Brendel and Wickham.) 



XIII. Reichenbachia Leach. 1826. (Name of a naturalist.) 



A large genus of small, broad-bodied species having the base of 

 thorax marked with a large fovea each side and a very small round 

 one on the median line; elytra each with three small basal fovese, 

 The following species are known from or perhaps occur in the State : 



KEY TO INDIANA SPECIES OF REICHENBACHIA. 



a. Carina? of first dorsal segment of abdomen separated by less than one- 

 third the width of the segment ; antennae not modified in the sexes. 

 I). Carina? separated by a space not wider than that between the su- 

 tural lines of elytra. 

 c. Thorax punctured. 

 d. Punctures of thorax fine and sparse; carinse of first dorsal quite 

 short and divergent. 607. gemmifee. 



dd. Punctures of thorax distinctly coarser and very dense; dorsal 

 carina? one-half the length Of segment and less divergent. 



60S. CANADENSIS. 



[21—23402] 



