98 SERKICOKNIA. 



82. Agrilus chevrolati. 



Sat depressus, subsurdus, viridi-aeneus ; thorace rufo-cupreo (vel aurato), subruguloso, disco antiee et postice 

 impresso, lateribus fortiter impressis ; elytris nigris, crebre asperatis, haud costatis, ad apicem arcuatim 

 acuminatis, apice ipso vix serrulate 



Long. 3| lin. 



Eab. Mexico, Chilpancingo in Guerrero (Edge), Toxpam (Salle). 



The head is rather flat in front, closely rugose ; with a deep longitudinal frontal 

 impression, which descends for two thirds the length of the face, with a slight swelling 

 on each side. The thorax is reddish-coppery, with the extreme anterior margin (which 

 is somewhat arched forward) dark aeneous ; the disc is transversely impressed in 

 front and longitudinally impressed behind ; the lateral impression is deep and abrupt ; 

 the posterior ridge is distinct, curved outwards and downwards anteriorly. The pro- 

 sternal chin-piece is arcuate, but has its margin nearly straight in the middle. The 

 prosternum is rugose, rather flat between the coxae, and not margined laterally. The 

 metathoracic episterna are closely and rather roughly punctured, with very sparse grey 

 pubescence. The abdomen is very finely and not very closely punctured. 



This species is very like A. chalcoderes (without yellow pubescence) ; but is broader, 

 and has the thorax impressed in front and the impression on the head much deeper. 



83. Agrilus ignotus. (Tab. VI. figg. 3, 3 a, b.) 



Latus, sat depressus, parum nitidus, seneus ; capite cupreo, crebre punctato ; tborace lsete cupreo, nitido, 

 fortiter punctato ; elytris cyaneis, purpurascentibus, crebre asperatis, brevissime sparsim griseo-pubescenti- 

 bus, ad apicem arcuatim attenuatis, apice ipso tenuiter serrulato. 



Long. 2|-3| lin. 



Hab. Mexico, Chilpancingo in Guerrero (Edge, E. E. Smith). 



This is a rather short, broad species as compared with A. chalcoderes. The head is 

 coppery, verging into brassy at the base of the antennae, with very short pale pube- 

 scence ; the punctures are strong and close together, forming curved lines on the 

 vertex; there is a longitudinal impression in the middle, narrow posteriorly, but 

 widening out and becoming more shallow above the clypeus. The thorax is shining 

 coppery, with sparse, very short yellowish pubescence; the punctures are rather 

 strong and are arranged in wavy lines which are not crowded together ; the front of 

 the disc is convex ; the base is impressed ; the lateral impressions are distinct ; the 

 posterior ridge is represented by an oblique oval swelling (fig. 3 a). The elytra are 

 evenly and moderately closely asperate ; the subcosta is faintly marked for nearly the 

 entire length of the elytra. The prosternal chin-piece is distinctly (slightly angularly) 

 emarginate. The prosternum is moderately strongly punctured, the punctures not 

 crowded ; the intercoxal process is convex in the middle. The metathoracic episterna 

 are closely and rather finely punctured. The abdomen is densely punctured at the 

 sides (especially at the base), less closely punctured in the middle ; the lateral carina 



