BUPRESTIDAE. 153 



acute at tip ; the mesosternura is consequently narrowly divided ; 

 the suture separating it from the nietasternum is distinct; the 

 antennal pores are placed in foveas at the extreniity'of the inferior 

 margin of the joints; the front is not lobed before the antenna?. 



But two genera, both diffused over our whole territory, are 

 found in our fauna : — 



Mentum coriaceous in front ; prothorax sinuate at base. Melanophila. 

 Mentuni entirely corneous ; prothorax truncate at base. Antuaxia. 



The sculpture of Anthaxia is peculiar, consisting on the head 

 and thorax of shallow punctures, with the intervening lines form- 

 ing a fine network. 



Group IV.— Chrysobothres. 



This is the first of the groups in which the antenna? are inserted 

 at the inner extremity of two short oblique grooves, by which the 

 front is narrowed ; before these grooves it again is widened, and 

 the anterior margin is emarginate in an angular form, so as to 

 produce a bilobed appearance. The mentum is corneous at base, 

 membranous at apex; the prosternum is acutely angulated on the 

 sides behind the coxa?, and is also acute at tip ; the mesosternum 

 is larger than usual, and only narrowly divided ; the scutellum, 

 small in all the preceding groups, is here large and acuminate ; 

 each elytron is rounded or subangulated at base, and enters the 

 base of the thorax, which thus becomes lobed. The anterior 

 femora in our species are strongly toothed ; the membranous lobes 

 of the first and second joints of the tarsi are obsolete. 



The species are of a rather broad and usually flattened form, 

 with the elytra impressed in the form of bands or spots, sometimes 

 of a brilliant metallic color; the sexual differences are in the form 

 of the anterior or middle tibia?, and in the tip of the abdomen. 

 The species of Chrysobothris are numerous, found in our entire 

 territory, and many of them closely allied; Actenodes is found 

 on the Atlantic slope, from New York to Texas. We have now 

 but two species in our fauna ; but as the genus is well represented 

 in Mexico, other species may be expected to occur in Texas.* 



Third joint of tarsi truncate ; hind tarsi with the first joint elongated. 



Chrtsobothkis. 



* Motschulsky (Bull. Mosc, 1859, II, 184) has described Belionota cali- 

 fornica. The other species of the genus known inhabit the East Indies and 

 Madagascar. It is distinguished from Actenodes by the scutellum being 

 large, and the nietastemuin deeply emarginate. 



