PTINID^E SCARAB^EIDJ-:. 103 



ANOBIUM ? DECEPTUM. 



itiiii </,<! ]>f inn Srudd., Bull. U. S. Geol. Geogr. Surv. Terr., IV. 7tv> (1878); Tert. 

 Ins. N. A.. -191'. pi. s. tig. 18 (1890). 



Given Kivrr, Wyoming. 



ANOBIUM LIGNITUM. 



.\nolnnn lignitwm Srudd.. Bull. U. S. Geol. Geogr. Surv. Terr.. IV. 7ti3 (1878); Tert. 

 Ins. N. A.. 4!L'-4'.:;. pi. s. tig. 24 (1890). 



(Jreen River, Wyoming. 



ANOBIUM DURESCENS. 

 .\nnhi, mi <////, .vr V '-v Scudd., Tert. rhyru-h. Col. U. S.. pi. 1. %. 19 (1892). 



Head, as usual in Anobium, bent downward, the front poorly preserved 

 in the single specimen, the surface rather coarsely anil rather distantly 

 punctate, the eyes moderately large, circular, lying- next the edge of the 

 rmarginate prothorax. I'rothorax bullate and hood-like, the front border 

 with strongly emarginate sides, the surface punctate exactly as that of the 

 head. Elytra very regularly arched, elongate, with heavily and sharply 

 impressed, deeply punctured stria', the puncta longitudinal and usually 

 separated by about half the length of one of them. 



Length, 3.5 mm.; breadth, 1.25 mm. 



Florissant, Colorado; one specimen, No. 13627. 



Seventy-seven species of fossil Scarabseidee have been discovered, of 

 which sixteen are from the Pleistocene, and of the latter, half are regarded 

 as identical with living forms. Thirty-two genera are represented, seven of 

 them in the Pleistocene, though only two of them in the Pleistocene only. 

 Three genera from the older Tertiaries are extinct types. 



CHCERIDIUM Lepelletier. 



An American genus with only two species in the United States, but 

 many in the Tropics. A single fossil species is known from the Pleistocene 

 of Pennsylvania. 



