120 Mr. Gr. C. Champion's Revision of the Mexican 



9. Listrus versicolor. 



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

 2, p. 126. 



(J. Head broad; prothorax strongly rounded at the sides, 

 gradually narrowed anteriorly, and also narrowed behind, about as 

 wide as the elytra, the latter subparallel; fifth ventral segment 

 truncate at the apex ; anterior tibiae with a short, stout, blunt tooth 

 at the inner apical angle. 



$. Prothorax smaller, narrowed from near the base; elytra 

 broader and less parallel. 



Hab. Guatemala, Ostuncalco [$] and Quezaltenango 

 [(^], in the Los Altos region. 



The six specimens referred by me to L. versicolor (3 (^ 

 and 3 $) vary in colour from wholly greenish or bluish-green 

 to green with the head and prothorax brassy or golden, 

 the colour of the latter being partly due to the denser 

 yellowish vestiture on these portions of the upper surface. 

 The head and prothorax are densely and finely, the elytra 

 rather coarsely, punctate. The two examples marked by 

 the author as the " types " are large females from Ostun- 

 calco, with broad, conspicuously margined elytra and long 

 cilia. The abraded males from Quezaltenango are much 

 narrower, but they seem to belong to the same species. 

 These latter come extremely close to some of the forms of 

 the very variable L. senilis, Lee, differing from them in the 

 finer and more scattered vestiture. 



10. Listrus ciliatipennis, n. sp. 



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

 2, p. 329 {nee p. 126). 



(J. Moderately elongate, rather depressed, feebly shining ; aeneous 

 or greenish -aeneous above, black beneath, the legs and antennae 

 piceovis; clothed with fine adpressed cinereous pubescence, the 

 curled marginal cilia of the elytra rather long and conspicuous. 

 Head broad, densely, rugulosely punctate; antennae as in L. 

 punctatulus. Prothorax about as wide as the elytra, transverse, 

 roimded at the sides, narrowed in front ; closely, minutely punctate, 

 the interspaces usually dull and alutaceous. Elytra subparallel in 

 their basal half, with rather prominent marginal carina ; more coarsely 

 and rugosely punctured in their basal third than on the rest of their 

 surface, the pimctures becoming minute towards the apex. Fifth 

 ventral segment unimpressed, truncate at the apex. Legs slender. 



