12 SEEEICOENIA. 



punctures are more clearly defined; the striae are also more distinct. On th side, 

 below the shoulder, there are two small brassy green finely punctured impressions close 

 together ; and about the middle, a little more removed from the margin, there is 

 another similar spot. The sculpture on the underside is altogether less strong; the 

 prosternal process and metasternum are similarly impressed, but nearly smooth, with 

 comparatively few punctures. 



Some specimens have a more coppery tint than the others ; and the sculpture varies 

 slightly. 



The male has the apical segment of the abdomen slightly but distinctly emarginate, 

 with the angles dentiform ; the female has this segment more narrowed and rounded at 

 the apex. 



2. Dicerca aeneovaria. (Tab. I. fig. 14.) 



D. oeneaz affinis et similis, nigra ; thorace cupreo-punctato, elytris plagis transversis guttisque sereis variegatis, 



apice truncato, quadrispinoso. 

 Long. 9|-11| lin. 



Hab. Mexico, near the city (Hbge). 



Allied to D. amea, but less convex, of blacker ground-colour, much less closely 

 sculptured, &c. It is still closer to D. inconspicua ; the thorax is the same, and has a 

 very narrow median smooth line. The chief difference is in the sculpture of the elytra. 

 The striae are rather more impressed (especially near the suture) ; the raised parts are 

 black; the impressions (and punctures) are brassy bronze, and occupy more of the 

 surface than the black smooth parts: three impressions on each elytron (although 

 somewhat confused) are particularly noticeable; the first is below the shoulder, the 

 second rather behind the middle, the third is some distance from the apex ; all three 

 commence on the margin, and extend to about the third stria from the suture : besides 

 these there are numerous other irregular bronzy spots, the apical region being almost 

 entirely taken up with them. The apex of each elytron is slightly obliquely truncated ; 

 the sutural angle is very acute ; and the outer angle is dentiform. 



3. Dicerca propinqua. (Tab. I. fig. 12.) 



D. cenece affinis et sat similis ; thorace angustiore ; elytris nitidioribus, fortiter pnnctato-striatis, ad apicem 



angustatis, productis, humeris prominulis. 

 Long. 10 lin. 



Hob. Mexico, Juquila (Boucard, coll. Salle). 



Very close to the preceding, but with the thorax rather narrower, somewhat 

 straight at the sides, and only a little sinuate before the posterior angles. The 

 elytra have the shoulders more prominent; and the apex is more narrowed and 

 prolonged ; the apex of each is obliquely truncated ; and both the sutural and external 

 angles of the truncature are more distinctly dentiform. The thorax is very strongly 



