AGKILUS. 79 



42. Agrilus nitidicollis. (Tab. V. figg. 15, 15 a.) 



Elongatus, nitidus, seneus, cuprascens ; thorace sat lato, sparsim punctato, lateribus impressis pube flava 

 indutis ; elytris seruginosis, sparsim punctatis, ad apicem dilatatis divergentibus, vitta suturali senea (post 

 medium interrupta), confertim punctulata, flavo-pubescente ornatis ; pedibus abdomineque lsete cupreis, hoc 

 ad latera purpurascente, maculis albis ornato. 



Long. 7 lin. 



Hab. Guatemala, Coban in Vera Paz (Conradt). 



The head has an impressed median line, and is widely impressed in front, with a 

 transverse impression on each side of the face about the middle ; the front is almost 

 smooth, the top is finely and sparingly punctured. The thorax is rather broad, 

 shining, sparingly punctured in the female (transversely striolate in the male), with 

 a slight median impressed line ; the sides are somewhat angular about the middle ; 

 the posterior ridge turns outwards and downwards, and joins the margin just beyond 

 the lateral angulation. The elytra are brownish- or greenish-bronze, with the apex 

 obscure purple ; the subcosta is well marked at the sides of the sutural stripe ; the 

 apices are divergent, somewhat dilated, obliquely and arcuately rounded on the inner 

 side and finely denticulate. The prosternal chin-piece is scarcely emarginate. The 

 prosternum is rather strongly and moderately closely punctured ; the intercoxal process 

 nearly parallel, with smooth, slightly incrassate margins, suddenly very obliquely narrowed 

 at the apex, leaving a central process at a slightly lower level. The episterna are finely 

 and moderately closely punctured, without pubescence. The abdomen is delicately 

 punctured, coppery, verging into purple-red at the sides, with a small white spot above 

 the basal segment and three oblique white stripes at the sides of the three terminal 

 segments ; the lateral carina of the basal segment is deeply excised at the part occupied 

 by the white spot (fig. 15 a). 



43. Agrilus observans. (Tab. V. figg. 17, 17 a.) 



iEneus, sat nitidus ; capitis vertice brunneo, thorace cyanescente ; elytris cupreo-purpurascentibus, ad apicem 



utrinque extus emarginatis. 

 Long. 2 lin. 



Hab. Panama, Bugaba {Champion). 



This very distinct species may be recognized by the apex of the elytra being cut out 

 on each side, leaving the central part angularly produced and finely serrate. The 

 head is rather flat in front ; the lower part brassy and transversely rugose, the upper 

 part brown ; the punctures rather strong but distinct from each other ; the top obscure 

 brownish, indistinctly punctured. The thorax is marked with strongly impressed 

 curved striolse ; there is an almost imperceptible longitudinal impressed median line ; 

 the posterior ridge is fine, close to the margin, curved. The elytra are moderately 

 strongly but not very closely undulate-asperate ; the apex of each is excised exteriorly 

 (fig. 17 a) ; the subcosta is very slightly indicated. The prosternal chin-piece is arcuate. 



