Buprestis, Trachys, and Elater. 250 



Length eleven-twentieths of an inch. 



This is a very different insect from the fuscipes, Fabr. 



3. E. unicolor. Blackish-brown ; antenna? simple ; thorax 

 short, narrowed before, and with an impressed line behind. 



Elater unicolor, Melsh. Catal. 



Description. Body blackish-brown, with short cinereous 

 hair : head a little concave just above the interval between 

 the antennae and a longitudinal slightly impressed line : 

 antennae not serrated, third joint considerably longer than 

 the fourth : palpi pale rufous : thorax somewhat convex, 

 narrowed anteriorly by an arcuated line, at the posterior 

 angles very slightly excurved ; posterior declivity with an 

 abbreviated impressed line, which does not reach the mid- 

 dle : scutel oval orbicular : elytra striate, striae without very 

 distinct punctures, but on each side of them a row of minute 

 punctures may be traced on the interstitial lines which are 

 a little rounded : thighs dull rufous. 



Length rather more than half an inch. 



4. E. viridis. Blackish-cupreous ; venter in the middle, and 

 feet rufous. 



Elater viridis, Melsh. Catal. 



Description. Body dark coppery, with short hairs : head 

 with rather large, confluent punctures : antenna rufous, 

 robust, much serrated : palpi rufous : thorax distinctly 

 punctured ; a very obvious, obtusely indented line extends 

 from the base to the anterior margin, where it is obsolete ; 

 posterior angles prominent, extending a little outwards : 

 scutel orbicular : elytra striate, the striae distinctly punc- 

 tured : epipleura rufous : feet rufous : venter on the disk 

 rufous. 



