and Central American Malachiidae and Melyridae. 115 



e*. Femora and tibiae in part in- 



fuscate ; body shining, brassy : 



species very small . . . metallicus, Gorh. 

 c. Antennae short, the penultimate joints 

 transverse, the fifth small, 8-10 form- 

 ing a definite club; body nigro- 

 aeneous or nigro-violaceous ; an- 

 tennae and legs infuscate, the latter 

 sometimes reddish : species very 

 small pygmaeus, Gorh. 



1. Listrus subcyaneus. 



Listrus subcyaneus, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 125. 



(J. Anterior and intermediate tibiae strongly curved, sinuate 

 within, sharply toothed at the inner apical angle; fifth ventral 

 segment with a long, curved, stout, ciliate, horn-like process on 

 each side of the broad median excavation, extending far beyond 

 the apical margin of the segment, the latter with a small polished 

 tubercle in the centre ; antennae slender, feebly serrate, joints 5-10 

 subtriangular, 6-10 about as long as broad, 5 larger than 6, 11 stout, 

 ovate ; prothorax strongly rounded at the sides ; body narrow. 



5. Antennae a little shorter; prothorax narrowing from about 

 the basal third; body bi'oader. 



Hob. Guatemala, Totonicapam and Quezaltenango, in 

 the Los Altos region. 



Of the eight specimens seen of this insect, only two are 

 bluish, the others being green or cupreous, the legs and 

 antennae, too, vary, in colour from piceous to almost 

 wholly testaceous. The sparse pubescence noticed by its 

 describer is simply due to abrasion. The single male from 

 Quezaltenango has the elytra very elongate, narrow, and 

 cupreous, and the antennae, tarsi, and apices of the tibiae 

 rufo-testaceous. 



2. Listrus cwpreonitens. 



Listrus cwpreonitens, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 125, t. 7, fig. 8 (?). 



cj. Anterior and intermediate tibiae strongly curved, sinuate 

 within, toothed at the inner apical angle; fifth ventral segment 

 unimpressed, with a minute dentiform projection at the middle of 

 the apical margin; prothorax strongly rounded at the sides. 



