126 CASEY 



name Impedita was wrongfully united with striata by LeConte; it is 

 an abundantly valid species. 



Subgenus Stereosa nov. 



This section of Buprestis is very limited in extent. The general 

 habitus of the species, involving among other features the somewhat 

 greater convexity of the body, is quite different from that prevailing 

 in either of the preceding subgenera, and it is this that prompts me 

 to give them a distinctive subgeneric name. The general anatomical 

 characters are as in Cypriacis, but the elytra have no vestige of regular 

 discal costas and but feeble traces of impressed striae, in the usual 

 sense, but instead there are series of large perforate punctures, the 

 general surface being closely, deeply and confusedly but evenly crib- 

 rate with smaller punctures. The prothorax is trapezoidal and sel- 

 dom has any trace of the impressed median line so developed in 

 Cypriacis and in some of the less typical forms of true Buprestis, but 

 the ante-scutellar impression or deep puncture is generally evident. 

 The basal joint of the hind tarsi is similarly variable in elongation. 

 The four species known thus far may be described as follows : — 



Elytra narrowly but abruptly sinuate-truncate and feebly bidenticulate at 

 apex. Body narrowly elongate-oval, convex, moderately shining, 

 greenish-subcupreous, the elytra generally bright green, with the suture 

 and external margins cupreous, frequently with a broad and ill-defined 

 median vitta on each of a dense indigo blue and again at times suf- 

 fused with cupreous almost throughout; under surface vivid green to 

 bright cupreous; head very densely compresso-punctate, the central 

 dense spot not very constant; eyes rather small and not very prominent; 

 antennae of the usual form, black; prothorax two-thirds or more wider 

 than long, the sides converging from base to apex and nearly straight; 

 apex truncate, very obsoletely bisinuate, the base broadly but more 

 evidently; surface strongly but not closely punctate, the punctures 

 smaller and denser in patches sublaterally, a median impunctate line 

 sometimes evident but never entire; elytra slightly wider than the pro- 

 thorax, almost twice as long as wide, the sides rounding and converging 

 in about apical third; surface subevenly convex, the small punctures 

 not densely crowded, rather sparse suturally, the larger perforations of 

 the series moderate but variable in size and well separated; under 

 surface finely, closely punctured, sparsely along the middle, the punc- 

 tures toward the sides of the abdomen not at all crowded ; prosternum 

 flattened, finely, densely punctate and sometimes feebly impressed; 

 head and under surface but slightly more hairy in the male. Length 



