Goleopterological Notices, VII. 6T9 



ZYGOMICRUS n. gen. 



This name is proposed for a small species, differing from Cop- 

 turodes in its subcontiguous eyes, very small and narrowly oval 

 antennal club, with less distinct annuli and still longer basal joint, 

 and in its somewhat shorter second joint of the antennal funicle, 

 which, in the male, is but little longer than the third, and in the 

 female a little shorter than the next two combined.* It also 

 differs in its elongate and distinctly strigose scales, these being 

 disposed sparsely along the strial intervals toward base, behind 

 the middle for a short distance, near the apex and along the 

 suture except at the middle, and also in its nearly simple elytral 

 apices behind the umbones. The type is Copturus minutus of 

 LeConte. 



Tachygontni. 



TACHYGONUS Schonli. 



The table published by Dr. LeConte (Proc. Am. Phil. Soc, 

 XV, p. 265) indicates groups defined by certain differences in the 

 elongate posterior legs ; these groups are retained and increased 

 in number in the following table, which includes all the species 

 known to me at present : — 



Hind femora armed beneath with several long slender and erect dentiform 

 spinules, the corresponding tibiae broad, arcuate and with the external 

 margin irregular ; elytra with four tufts of denser pubescence arranged in 

 a very short broad trapezium. 

 Integuments red, mottled with black; hind femora and basal parts of the 

 tibiae in great part red; subsutural tufts of the elytra well defined. 



lecontei Gyll. 



Integuments deep black throughout, the elytra abruptly red at the apical 



margin; hind legs black throughout, the femora red above near the base, 



the hind tibiae much narrower; subsutural tufts diffused; size much 



smaller ..., spinipes n. sp. 



Hind femora armed beneath with several long erect and dentiform spines, the 

 tibiae long, narrow and nearly straight, unmodified externally; elytra black, 

 with a single red band, the pubescent tuft small, central and divided by 



the suture gracilipes n. sp. 



Hind femora with about two stout spiniform teeth beneath, the tibiae shorter 

 and sigmoid, unmodified externally ; elytra with a central white spot of 

 dense hairs divided by the suture rliombus n. sp. 



*The length of this joint is erroneously stated by LeConte (Proc. Am. Phil. 

 Soc, XV, p. 264). 



