AGKILUS. 89 



62. Agrilus coxalis. 



iEneus, parum nitidus, pronoto cyaneo-seneo, elytris brunneo-seneis postice purpuras centibus ; capite anticc 

 confertim rugoso-punctato, fronte medio impressa ; thorace eonfertim tenuiter punctato et subruguloso, 

 disco leviter bi-impresso, angulis anticis macula alba ornatis ; elytris confertim subasperato-punctatis, 

 maculis sex fere albis ornatis ; prosterno crebre rugoso-punctato ; abdomine sat crebre punctato, segmentis 

 ad latera supra flavo-maculatis. 



Long. 4|-5 lin. 



Hab. Mexico, Juquila {Salle), Cordova {Edge) ; Guatemala, San Geronimo, Capetillo 

 [Champion). 



The head varies very much in colour in the different individuals ; it is generally 

 brassy-green or bluish-green in front, much darker on the vertex. The thorax has the 

 discoidal impressions distinct but shallow, subconfluent; the posterior ridge is well 

 marked, smooth, nearly straight, terminating abruptly before the middle of the side. 

 The elytra are flat on the back, the suture not raised except at the apex ; the subcosta 

 is not well marked : each elytron has three pale yellow or white pubescent spots — one 

 in the basal fovea, another at the middle, the third between the second and the apex ; 

 there is also a little pubescence along the suture at the apex. The mesothoracic epimera, 

 the outer half of the metathoracic episterna, and the posterior coxge are clothed with 

 yellow pubescence. The abdomen has some extremely short fine pubescence ; towards 

 the sides of the second and third segments the pubescence is a little more distinct, but 

 scarcely forms spots. The spots on the upperside of the segments are elongate ; that 

 on the basal segment is generally the only one visible from above. The metathoracic 

 episterna are closely punctured. 



63. Agrilus robustus. 



Sat brevis, crassus, cupreo-brunneus, supra surdus, subtus nitidus ; capite antice subplanato, confertim sub- 

 tiliter rugoso-punctato, linea mediana leviter impresso ; thorace transversim creberrime ruguloso et 

 punctulato, medio sulcato ; elytris confertim asperatis, guttis quatuor parvis inconspicuis notatis ; 

 femoribus sat incrassatis ; corpore subtus sparsim griseo-pubescente. 



Long. 3-3§ lin. 



Hab. Nicaeagua, Chon tales (Belt). 



The thorax has the median channel rather narrow, moderately deep, not quite 

 reaching the base or anterior margin ; the posterior ridge is well marked, straight, 

 somewhat removed from the margin, directed straight forwards. The elytra have the 

 subcosta fairly well marked ; each elytron has traces of two small spots, one at about 

 a third from the base, scarcely noticeable, the other rather less than a third from the 

 apex. The prosternal chin-piece is rounded in front, with an almost imperceptible 

 sinuosity in the middle. The prosternum is densely punctured. The metathoracic 

 episterna are not very densely punctured, sparsely pubescent. The abdomen is not very 

 densely punctured, except at the sides of the basal segment. The legs have the femora 

 rather unusually thick, especially the anterior. 



biol. CENTK.-AMER., Coleopt., Vol. III. Ft. 1, April 1889. N 



