THE POWIIKIM'OST BEETIiES. 887 



tlu! frontal mai-.Liiii. tlic tlircc oiitci- joints always larger; front 

 coxae large, globose, sultcoiiical; spurs of middle and hind tibiiii dis- 

 tinct; front tibia? usually serrate and terminated by one long spur; 

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

 simple claws. Four genera are represented in the collection at 

 hand, while another probably occurs in the Slate. 



KEY TO I.NDIANA OENKKA OK IJOS I 1!U 1 1 1 N.K. 



(t. 'IMiorax with distinct ;in(l entire* side ni:iri,'ins; lic.-ul (-(pvcrcd in jKirt l>y 



tlU' lilnniX. I. KNDI'CATOMIS. 



(III. Tliora.x without side niur.iiins ; licad cnlii-cly covered by the thorax, tlie 

 latter usually roui^hened in front hy sniall elevations. 

 I), luternieiliate joints of antenna- sliorter th.-m tlH> lii'st and second; 

 tarsi long, slender, lirst joint very short. II. Stnoxyeon. 



bh. Intermediate joints of anteun«» longer than the first and second. 

 c. Tai'si as long as the tibire, slender, second joint long. 



(1. Front nuu-gined. at the sides at least. III. Bostricht's. 



lid. Front not margined. IV. Amphicerus. 



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



I. Endecatomi^s ^lellie. 1S47. ('(ir., "(>leven i joint.") 



Head in great part covered by the thorax, the latter margined 

 from base to tip ; antenna- 11 -jointed, with a loosely united 3-jointed 

 club; terminal spur of front tibia- large and hooked; last joint of 

 tarsi very long. Two species are known fi-om the Eastern United 

 States, both of which occur in Indiana. 



KEY TO SPECIES OE ENDECATOMUS. 



'(. I'nder surface conspicuously granulate; male with two small tubercles 

 in front. 10S4. keticulatX'S. 



'/(/. Under surface ot)snletely granulate; male without frontal tubercles. 



1685. RUGOSUS. 



ltiS4 (S.SoO). ExoECATOMi's RETicri.ATrs Hbst.. Kafer. V, 70. 



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

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

 median impressed line, both il and tlie elytra grjinulate and pulH-scent as in 

 nii/usus. Length 4.5 mm. 



Two in Webster colh-ction labelh-d "Ind." Said to be an in- 

 troduced Euroi)ean species. Palei- and niorc^ slend(-r than rufiogiis. 

 and less densely pubescent above. 



*1G85 (5387). Endecatomus rugosus liand.. Best. Journ. Nat. Hist., II, 

 1838, 26. 

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

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



