CH^TOCNEMA. 397 



near the slightly thickened lateral margin ; elytra distinctly narrowed towards the apex, closely and 

 strongly punctate-striate, the interstices scarcely raised and very slightly wrinkled when viewed in a 

 certain light. 



Hab. Guatemala, Duefias (Champion). 



The transverse row of punctures on the head, in connection with the rather long and 

 fulvous antennae, constitute the principal points of distinction of this species, of which 

 but a single specimen was obtained. 



9. Chsetocnema Mvicornis. 



Ovate, greenish-aeneous ; antennas and the four anterior legs fulvous ; thorax closely and distinctly punctured ; 

 elytra strongly punctate-striate. 



Length f line. 



Head impunctate, smooth, the transverse and oblique grooves near the eyes deeply impressed ; antennae more 

 than half the length of the body, the third and fourth joints short, equal ; thorax transverse, slightly 

 narrowed in front, the sides very little narrowed, surface very closely but distinctly punctured ; elytra 

 strongly punctate-striate, the interstices convex at the sides ; legs fulvous or fulvo-piceous, the posterior 

 femora darker ; intermediate and posterior tibiae emarginate near the apex. 



Hab. Mexico, Guanajuato (Salle) ; Guatemala, near the city, Panajachel, Capetillo, 

 Zapote, Cerro Zunil (Champion). 



Closely allied to C. braziliensis, Baly, but of a more broadly ovate shape and the 

 elytra differently punctured ; the punctures in C. braziliensis are very closely approxi- 

 mate as well as the striae themselves ; the latter in C. fulvicomis are much wider apart 

 and their interstices much less convex. C. eonfinis, Crotch, seems also closely allied, 

 but is described as having the thorax " lightly punctate " and the elytra " not very 

 deeply striate." The Mexican specimens have the thorax a little more finely punc- 

 tured, but other differences I cannot find ; the examples from Cerro Zunil and 

 Capetillo are smaller, with the thorax less transverse and its sides straighter, but I do 

 not believe them to be specifically distinct. 



10. Chsetocnema frontalis. 



Brownish-aeneous ; base of the antennae and the posterior tibiae fulvous ; head finely punctured ; thorax trans- 

 verse, more distinctly and closely punctured ; elytra strongly punctate-striate, the interstices convex on 

 the outer disc only. 



Length f line. 



Head opaque, finely granulate, minutely punctured ; frontal tubercles and the carina entirely absent ; clypeus 

 separated from the face by a fine transverse groove, which joins the usual lateral grooves near the eyes ; 

 antennae not extending further than the basal third of the elytra, the five lower joints fulvous, the rest 

 black, gradually thickened, the third and the two following joints of equal length ; thorax not narrowed 

 in front, more than twice as broad as long, the sides nearly straight, the surface much more strongly 

 punctured than the head ; elytra narrowed at the apex, the punctures deep, but not very closely approached, 

 the interstices impunctate, flat, and only costate near the lateral margin. 



Rob. Guatemala, Quiche Mountains 9000 feet (Champion). 



To distinguish this species, the punctured head, the absence of the tubercles and 

 carina and the rather short antennae, in connection with the transverse thorax, will help 



