288 COLEOPTERA OF NORTH AMERICA. 



species of Elaphidiou, except pr-otensum, which has cariuated 

 antennae and tibite, and belongs to the genus Aueflus. The 

 typical species of llonialeum is Enaphalodea simpUcicollis Hald. 

 (Elaph. pulverulentum Maid., nee De Geer). It corresponds with 

 Hypermallus Lac. in part, but the greater number of the species 

 mentioned by him have been replaced in Elaphidion, as tlie dif- 

 ferences in the sternum, upon which the genera were separated, 

 seem to be of purely specific importance. 



We" have been disposed to retain Anoplium for the second 

 species of Haldemart, A. unicolor, which has been fully described 

 by Lacordaire; the first species being placed in Stromatium, the 

 name is thus rendered disposable. But it seems to be so slightly 

 different from Elaphidion, that it is more prudent to suppress it. 



Aneflus contains E. protensum with the elytra bispinose, and 

 E. lenue, linear-e, etc., with the spines much shorter, or wanting. 



Eustroma is founded upon Elaph. validian Lee, a large, stout 

 species from Texas and Lower California, with short and stout 

 antennsB, the intermediate joints of which are concave beneath ; 

 the antennal spines are short, and the femora and elytra are 

 unarmed; the 4th joint of the antenna? is conspicuously shorter 

 than the od or 5th: the sides of the prothoi'a.x have a large oval 

 l)atch of dense yellowish pubescence in two specimens from 

 Texas, but in another specimen it is much less distinct, and in 

 one, from Lower California, it is not visible. 



Zamodes contains a black species from Pennsylvania, of the 

 same size and form as Tylonotus but without callosities on the 

 prothorax ; the antennae, legs, and general surface of the body 

 are clothed with long, erect, flying hairs. From its strong re- 

 semblance in appearance to Zamium Pascoe, which is placed bv 

 liacordaire in his group Saphanides, the generic name has been 

 derived. 



Group III. — Ibidiones. 



The very elongate form, large and coarsely granulated eyes, and 

 clavate thighs will easily distinguish the members of this group 

 from all others in our fauna; in addition, it will be observed, that 

 the front coxae are small, rounded, and either inclosed, or a little 

 open behind, the middle coxag are not open externally and the 

 cavities not at all angulated ; the hind tarsi are slender, the 1st 

 joint as long as the two following united. The front is small and 



