Coleopterological Notices, VI. 627 



Nematoplini. 



The exceedingly rare Neinafoplus coUaris Lee, is at present 

 the onl_y species assignable to this tribe. The hind tarsi are fili- 

 form throughout, with the third joint simple and cylindrical ; this 

 very exceptional structure in the first genus of the subfamily be- 

 ing similar to that of Mecynotarsus, which I have placed at the 

 end. The tarsal claws are by no means cleft, as stated b}' Le- 

 Conte and Horn (Class. Col. N. A., p. 410), but are simple and 

 thickened or subdentate internally at base, where there is attached 

 a long slender minutel}" pubescent appendage, which almost equals 

 the claw in length; besides this remarkable appendage, there is a 

 distinct bisetose onychium between the claws.* The last antennal 

 joint is not unusually elongate, and the feeble apical constriction 

 of the prothorax does not extend laterally upon the flanks. 



EURYGENIINI. 



The genera composing this tribe are somewhat numerous, and 

 are confined entirely to the new world ; those known to me at 

 present may be distinguished as follows : — 



Last joint of the antennae not noticeably elongate. 

 Eyes narrowly and distinctly emarginate. 



Tenipora prominent; antennte filiform; maxillary palpi large, with the 



last joint triangular Retocomiis 



Tempora not prominent; antennas serrate and very long; maxillary palpi 

 small, filiform, the last joint cylindrical and not much longer than the 



preceding Hastorenius 



Eyes truncate or broadly and feebly sinuate; antenna; filiform. 

 Tempora well developed and prominent. 



Eyes large; spurs of the hind tibiae short; last joint of the maxillary 



palpi long and cultriform Stereopalpu!^ 



Eyes much smaller; spurs of the hind tibiie long; maxillary imlpi 



greatly developed, very broad, the joints triangular Pergetus 



Tempora not prominent; eyes very large; tibial spurs short. 



£iirygeiiiiis 

 Last joint of the antennie much elongated Bactrocei'US 



These genera are all North American, except Eurygenius, 

 which is confined as far as known to Brazil. The third joint of 

 the hind tarsi is triangular, not dilated and not membranous or 



*The claws were described properly by LeConte in tlie original diagnosis of 

 Nematoplus (Proc. Ac. Nat. Sci., Phila., 1855, p. 275). 



Annals N. Y. Acad. Scr., VIII, Sept., 1895.— 43 



