598 PHYTOPHAGA. 



6. Luperus subglabratus. 



Black, the head (the vertex excepted), antennae, thorax, and legs fulvous ; thorax subquadrate, impunctate ; 

 elytra metallic blue, scarcely visibly punctured. 



Length lf-2 lines. 



Head more or less metallic aeneous or greenish at the vertex, impunctate, the lower part fulvous ; the frontal 

 tubercles distinct, broad and rather elongate ; clypeus narrowly transverse, its apex not much prolonged 

 upwards ; mandibles piceous at the apex ; antennae rather stout, fulvous, the third joint scarcely twice 

 the length of the second ; thorax about one half broader than long, the sides nearly straight, scarcely 

 rounded or widened in front, the posterior margin slightly sinuate, the surface rather flattened, entirely 

 impunctate, fulvous ; scutellum piceous ; elytra dark violaceous-blue, only visibly punctured when examined 

 under a strong lens ; legs fulvous ; the first joint of the posterior tarsi as long as the following two joints 

 united. 



Hab. Mexico, Acapulco in Guerrero (Hoge). 



L. subglabratus is separated from other similarly-coloured species by the shape of the 

 thorax and by its straight sides and impunctate surface, and also by the nearly glabrous 

 elytra ; the head is in all the specimens more or less metallic green at the vertex. A 

 single specimen, also obtained at Acapulco, is a little larger and has the elytra rather 

 more distinctly punctured ; it is probably a female of the same species. 



7. Luperus punctellus. 



Black, the three basal joints of the antennae and the thorax fulvous ; elytra opaque, black, finely punctured, 



the base and the sides with some longitudinal grooves. 

 Length 2| lines. 



Head rather elongate, the vertex black, shining ; the frontal tubercles strongly raised, trigonate ; the clypeus 

 with a distinct central ridge, its anterior margin straight ; labrum broad, black ; the apices of the mandibles 

 fulvous ; antennae black (the terminal three joints wanting), the basal joints below, and the following two 

 joints entirely, fulvous, the third joint one half longer than the second ; thorax subquadrate, one half 

 broader than long, the sides a little rounded, constricted near the extreme base, the angles slightly 

 oblique, the posterior ones somewhat produced outwards, the surface impunctate, with a very small fovea on 

 each side, fulvous, shining ; elytra rather depressed, each with two short longitudinal depressions (divided 

 by a short longitudinal ridge) placed immediately below the base and a longer depression below the 

 shoulder, the latter gradually increasing in depth and ending below the middle, the punctuation arranged 

 in close irregular lines and consisting of distinct and smaller impressions; the underside and the legs 

 black; the first joint of the posterior tarsi as long as the following three joints together; claws 

 appendiculate. 



Hab. Mexico, Pinos Altos in Chihuahua (JBuchan-Hepburn). 

 A siDgle specimen, probably a female. 



8. Luperus albomarginatus. 



Testaceous, the base of the head, the antennae, the tibiae, and tarsi black; thorax fulvous ; elytra black finely 



punctured, the sutural and the lateral margins, narrowly, yellowish-white ; breast piceous. 

 Length 2 lines. 



Head flavous, the vertex piceous; the frontal tubercles distinct, but not very strongly raised ; the clypeus 

 broadly triangular; the labrum piceous; the palpi rather robust, piceous; antennae two thirds the length 

 of the body, black, the third joint twice as long as the second; thorax scarcely broader than Ion- the 

 sides nearly straight, the surface impunctate, with two shallow impressions on the middle of the°disc • 

 scutellum black; elytra finely and distinctly but not very closely punctured, black, narrowly margined 



