14 SEEEICOENIA. 



but it is also less bright in colour, with only a stripe of green on the elytra, and the 

 channel on the thorax is replaced by a smooth raised line. The thorax is less denexed 

 at the sides and anterior angles than in B. aurulenta, with strong punctures irregularly 

 placed, leaving irregular smooth intervals on each side of the disk ; on each side of the 

 median ridge, along the front margin, and at the sides, the punctures are smaller and 

 much closer, crowded together at the sides. The posterior angles are less acute than 

 they are in aurulenta. The elytra are more gradually narrowed towards the apex ; dull 

 coppery purple, with the space between the first and second costse green ; densely punc- 

 tured, as in aurulenta. Each elytron has four costse (besides the short scutellar one) ; 

 the first and second extend nearly to the apex, a little more raised than is usual in 

 aurulenta ; the third is fine, scarcely raised, somewhat interrupted, and does not extend 

 much beyond the middle ; the fourth is also very fine, a little more elevated than the 

 third, and extends from some distance below the shoulder nearly to the apex. The 

 apex of each elytron is obliquely truncated, the sutural angle is moderately acute, the 

 outer angle slightly dentiform. The punctuation of the underside of the insect is some- 

 what similar to that in aurulenta ; but that on the abdomen is more equally distributed, 

 and at the sides of the basal segment it is less close and finer. 



3. Buprestis biplagiata. 



Elongata, elliptica, cuprea, supra aureo-viriclis ; thorace crebre punctato, plagis duabus nitidis margineque 



cupreis ; elytris confertim punctatis, quadricostatis, sutura margineque cupreis. 

 Long. 8 lin. 



Hab. Mexico, San Luis Potosi (Salle). 



This species closely resembles the preceding (B. piliventris) ; but the copper-colour is 

 not so red, and is confined to the margins of the thorax and two patches on the disk, 

 and to the suture and margins of the elytra. The thorax is very similar ; the median 

 raised line is the same, but on each side of the disk there is a much more clearly 

 defined smooth patch, which is sparingly punctured. The elytra differ in having the 

 scutellar stria almost confounded with the suture; the third costa is smooth and 

 shining, and, although abbreviated posteriorly, is as well defined as the first and second. 

 The apex of each elytron is obliquely and very slightly truncated, the outer angle not 

 dentiform. The sculpture of the body beneath is very similar ; but the sides of the 

 basal segment of the abdomen are more strongly and more closely punctured, and its 

 margin (especially at the sides), as well as that of the other segments, is smooth. 



4. Buprestris ventralis. 



Elongata, elliptica, aeneo-viridis, subtus aureo tincta ; thorace crebre punctato, linea mediana nitida, margine 

 laterali ipso cupreo : elytris sutura marginibusque cupreis, sutura costisque utrinque quatuor parum 

 elevatis, abdomine parce punctulato. 



Long. 9 lin. 



Hab. Mexico {Edge). 



