394 PHYTOPHAGA. 



1. Psylliodes gnatemalensis. 



Below piceous or blackish ; head and thorax bluish-black, the latter finely and closely punctured ; elytra dark 

 blue, punctate-striate, the interstices obsoletely punctured. 



Length If line. 



Head finely and not very closely punctured, the sides near the eyes bounded by a rather deep groove ; antennae 

 half the length of the body, black, the first two joints obscure fulvous and of nearly equal length ; thorax 

 scarcely twice as broad as long, the sides straight, slightly narrowed anteriorly ; anterior angles broadly 

 oblique, the surface finely and rather closely punctured ; seutellum small, black ; elytra not depressed 

 below the base, the punctured rows regular and much more distinct anteriorly than towards the apex, 

 interstices very obsoletely punctured and slightly wrinkled ; legs piceous, the base of the posterior femora 

 within fulvous ; first joint of the posterior tarsus as long as half the tibia. 



Hah. Guatemala, Senahu in Vera Paz (Champion). One specimen. 



The shape of this species resembles somewhat the European P. dulcamarce, which it 

 also resembles in the colour of the elytra ; the fine punctuation of the thorax and the 

 longer antennae, as well as other distinctions, sufficiently separate P. guatemalensis. 



2. Psylliodes tristis. 



Ovate, narrowed boflind, below piceous, above black ; antennae, the four anterior legs, and the tarsi testaceous ; 

 thorax very closely punctured ; elytra finely punctate-striate. 



Length f line. 



Head scarcely visibly punctured ; frontal tubercles and the carina absent ; labrum testaceous ; antennae about 

 half the length of the body, entirely testaceous, the third joint smaller than the second ; thorax narrowly 

 transverse, about three times as broad as long, posterior margin sinuate near the median lobe, the 

 latter produced and broadly rounded, sides slightly rounded and narrowed in front, surface extremely 

 closely and finely punctured, the interstices somewhat wrinkled; elytra finely and regularly punctate- 

 striate, the interstices impunctate ; legs testaceous, the posterior femora and tibiae as well as the under- 

 side dark piceous. 



Hdb. Guatemala, Cerro Zunil (Champion). A single specimen. 



b. Anterior coxal cavities closed. 



* 



CHiETOCNEMA. 



Chatocnema, Stephens, 111. Brit. Ent. iv. p. 325 (1831). 

 Plectroscelis, Redtenbacher, Fauna Austr. 2nd ed. p. 946. 



The species of this genus are for the most part of a metallic aeneous colour, closely 

 allied, and difficult in many instances to separate ; their geographical range extends to 

 all parts of the globe, Europe furnishing most of the species. A few have been 

 described from Central America. 



l. Chsetocnema mexicana. 



Chcetocnema mexicana, Baly, Trans. Ent. Soc. 1877, p. 173 \ 



Rah. Mexico, Teapa 1 (Pilate). 



An examination of the type in Mr. Baly's collection makes me doubt the specific 

 distinction of this species from C. divergens, from which, according to the description of 



