THE POWDER-POST BEETLES. 88 r 



the frontal margin, the three outer joints alwaj's larger; front 

 coxae large, globose, subconical ; spurs of middle and hind tibiae dis- 

 tinct : front tibiae usually serrate and terminated by one long spur ; 

 first joint of tarsi short, sometimes obsolete ; fifth joint long, with 

 simple claws. Fuur genera are represented in the collection at 

 hand, while another probably occurs in the State. 



- KET TO IXDIA:^A GENEBA of BOSIBICHIX-E. 



a. Thorax with distinct and entire side margins ; head covered in part by 

 the thorax. I. Endecatomus. 



aa. Thorax without side margins ; head entirely covered by the thorax, the 

 latter usually roughened in front by small elevations. 

 h. Intermediate joints of antennte shorter than the first and second ; 

 tarsi long, slender, first joint very short. II. Sixoxylo>-. 



W). Intermediate joints of antennce longer than the first and second, 

 c. Tarsi as long as the tibise, slender, second joint long. 



(?. Front margined, at the sides at least. III. BosTEicnrs. 



dtZ. Front not margined. IV. Amphiceeus. 



cc. Tarsi short, second joint not elongated. V. DixoDEBts. 



I. ExDECATOJirs Mcllie. 1847. (Gr., "eleven - joint.") 



Head in i>reat part covered by the thorax, the latter margined 

 from base to tip ; antennas 11-jointed, -irith a loosely united 3-jointed 

 club; terminal sjiur of front tibiae large and hooked; last joint of 

 tarsi very long. Two species are known from the Eastern United 

 States, both of which occur in Indiana. 



KET TO SPECIES OF ESDECATOSIUS. 



«. Under surface conspicuously granulate; male with two small tubercles 

 in front. 16S4. keticulatus. 



aa. Under surface obsoletely granulate ; male without frontal tubercles. 



16S-5. EUGOSUS. 



16S4 (5336). EKDECATOiirs beticdlatis Hbst, Kafer, V. 70. 



Elongate, rather slender. Dull reddish-brown, rather thiciily clothed 

 with yellowish hair. Thorax broadly arched, sides rounded, disli with a 

 median impressed line, both it and the elj-tra granulate and pubescent as in 

 rugosus. Length 4.5 mm. 



Two in "Webster collection labelled "Ind." Said to be an in- 

 troduced European species. Paler and more slender than rugosus, 

 and less densely pubescent above. 



*1685 (53.37). E>dbcatomus bugosvs Rand., Bost. Journ. Nat. Hist, II, 

 1S38, 26. 

 Elongate-oblong. Dark or piceous brown, opaque, covered with tufts 

 of pale brown, wool-like hairs. Thorax rather closely and coarsely granu- 



