AGRILUS. 73 



This species varies in length from 5^ to 6J lines. Thomson gives the colour as 

 purple ; this, however, is not the most usual colour, the disc of the thorax and portions 

 of the elytra being generally of a dark green. Two examples before me have the apex 

 of the elytra tinted with coppery. The front of the head is coppery-red, and there is 

 a small yellowish-white pubescent spot above the clypeus. The sides of the prosternum 

 and metasternum are clothed with very fine pale grey pubescence, and there is a some- 

 what large triangular spot of the same colour at the side of third abdominal segment. 



31. Agrilus chlorocephalus. (Tab. IV. figg. 17, 17 a, b.) 



Elongatus, angustus, seruginoso-seneus, nitidus ; capite antice laete purpureo, clypeo viridi ; thoracis disco 

 sparsim punctulato, basi foveolato ; elytris subcostatis, regione suturali creberrime subtiliter punctulato, 

 subcosta in medio parcius subtilius punctulata, apice ipso parum dilatato, recte truncato, denticulato, 

 angulo externo dentiformi ; metasterni lateribus fulvo-maculatis. 



Long. 6 lin. 



Hab. Mexico, Cordova (Salle). 



The front of the head is of a beautiful purple, the purple limited above by an opaque 

 black velvety spot ; rather deeply longitudinally impressed above the clypeus, with a 

 spot of white pubescence in the middle. The thorax has in certain lights a distinct 

 purple shade at the sides ; the front part of the disc is convex, with a very slight 

 longitudinal impression ; the base is somewhat impressed, and has a rather larger 

 longitudinal median impression ; the punctures are distinctly separated from each 

 other ; there is an oblique channel on each side (bounded on its outer side by the 

 usual carina), with a small spot of white pubescence at its anterior extremity. The 

 elytra are densely and finely punctured in the sutural area ; the rest of the surface is 

 much less closely punctured, the punctures being distinctly separated from each other ; 

 there is some very fine inconspicuous pale pubescence on the sutural area, interrupted 

 in the middle by an oblong black spot, and nearer the base there is a trace of a similar 

 (but shorter) spot ; the apex is purple on the outer side. The basal segment of the 

 abdomen is slightly visible at the sides of the elytra, the visible part being clothed with 

 fulvous-yellow pile. A spot at the posterior angle of the metasternum, the metathoracic 

 episterna, and the posterior coxse are fulvous-yellow. The legs are somewhat coppery, 

 with the anterior surface of the front legs green. 



32. Agrilus lentulus. (Tab. V. fig. 12.) 



Prseeedenti similis, differt tborace fortius punctato ; elytris ad apicem intus oblique truncatis, denticulatis, 



angulo externo vix dentiformi. 

 Long. 6 lin. 



Hab. Mexico, Cordova [Salle). 



This insect differs from A. chlorocephalus in having the front of the head blue-green. 

 The thorax is obscure purple, with a green (coppery-bordered) line on each side of the 

 biol. cente.-amee., Coleopt., Vol. III. Pt. 1, March 1889. L 



