182 DESCRIPTIONS OF NEW SPECIES. 



Sparsely pubescent, elytra very coa-rsely punctured before the middle, 

 with an irregular transverse patch of white pubescence at the middle. 



5. T.SMATUM. 



Sub-Genus ELAPHIDION. 



The metathoracic episterna are scarcely wider in front than 

 behind, and there are no distinct sensitive spaces on the antennae ; 

 the antennae are longer than the body in the and shorter in the 

 9 . The prothorax of the $ in some species is more finely 

 punctured than in the 9 , but the difference is never as obvious as 

 in the preceding sub-genus ; the prothorax is sometimes rounded 

 on the sides, sometimes straight, and usually marked with dorsal 

 callosities. The prosternum is sometimes perpendicular behind, 

 in which case the mesosternum is suddenly declivous in front, 

 and the femora spinose at tip ; otherwise it is rounded, the 

 mesosternum obliquely declivous, and the thighs unarmed ; in 

 the second case the elytra are sometimes merely truncate or even 

 rounded at tip, and the antennal spines occasionally obsolete. 

 The scent pores are usually not very distinct, sometimes (E. sub- 

 pubescens) remarkably large, sometimes (E. moestum} appa- 

 rently wanting. The legs are usually finely punctured and 

 pubescent, without distinct flying hairs, sometimes coarsely 

 punctured and sparsely hairy, the hairs being in a few species 

 very long (E. pusilluiri). The body is more or less densely 

 pubescent, except in E. unicolor, which is polished as in Ibidion 

 and Sphaerion. 



A. Antennae and elytra with very long spines; thighs spinose at tip; 



prothorax perpendicular behind, mesosternum gibbous ; prothorax 



9 similar, with several callosities ; 



Above glabrous, with patches of white hair. 6. IRRORA.TUM. 



Above clothed irregularly with gray pubescence. 7. MUCRONATUM. 



B. Antennal spines small ; prosternum rounded behind, mesosternum 



obliquely declivous ; thighs not spinose at tip ; prothorax 

 finely, 9 more coarsely punctured ; (scent pores indistinct in 

 a, b, or very obvious, c, or wanting d) ; 



a. Prothorax ronnded on the sides with several dorsal callosities, 



elytra truncate and strongly bispinose at tip ; 

 Pubescence grayish-brown, mottled. 8. INCERTUM. 



b. Prothorax feebly ronnded on the sides, elytra not bispinose at tip, 



pubescence grayish-brown, mottled, (legs densely punctured 

 and pubescent) ; 



Thorax with a medial smooth space, and no discoidal callosities, tip of 

 elytra truncate inwards, not spinose. 9. IXEKME. 



