78 SEEEICOENIA. 



40. Agrilus acuductus. (Tab. IV. figg. 15, 15 a, b.) 



Viridi-seneo-metallicus, sat nitidus ; thorace crebre sat fortiter punctato, transverse subruguloso, disco antice 

 et postice levissime foveolato, lateribus impressis subtilissime rugulosis, costula ad angulos posticos nitida ; 

 elytris post medium attenuatis, ad suturam late impressis, creberrime subtilius punctatis et transverse 

 subrugulosis, ad apicem cupreis, spinosis. 



Long. 5-6 lin. 



Hab. Guatemala, Capetillo {Champion). 



The head has the punctuation strong ; the punctures on the vertex rather close 

 together, those on the face crowded ; there is a longitudinal impressed line on the 

 vertex, continued down the face to a little above the clypeus ; on the middle of the 

 face there are two very slightly raised ovate spots. The face in some of the specimens 

 is green, in others it is aeneous, with the clypeus coppery ; this is no doubt a sexual 

 character. The thorax has the punctuation rather strong, the punctures partially 

 confluent transversely, the interstices forming transverse and undulating rugae. The 

 elytra have the punctuation moderately fine and very close, and in some aspects the 

 surface appears to be finely rugulose ; the subcosta is well marked ; there are two very 

 small spines at the sutural apical angle, a longer one beyond this, and a very small one 

 at the outer angle. The abdomen has the sides not (or scarcely) visible above at the 

 sides of the elytra. 



41. Agrilus denticulatus. (Tab. V. figg. 16, 16 a.) 



Viridi-seneus, subtus seneus, nitidus ; thorace parum convexo, sat crebre punctato, basi medio fovea leviter 



impressa ; elytris crebre punctatis, ad apicem acuminatis, acute dentatis. 

 Long. 5|-6| lin. 



Hab. Mexico, Cordova {Salle) ; Guatemala, Capetillo {Champion). 



The head is rather flat in front, closely rugose and green in the male, coppery and 

 irregularly punctured in the female. The thorax is moderately strongly punctured, but 

 the punctures are not very clearly defined, though generally distinctly separated from one 

 another ; the fovea in the middle of the base is small and shallow ; the posterior ridge 

 is rather thick at its base, fine anteriorly, directed inwards at first and then directed 

 forwards and very slightly outwards. The elytra have the subcosta well marked but 

 much arched — it is sparingly punctured, the punctures closer together towards the 

 sides ; the sutural area is moderately closely and strongly punctured ; each elytron 

 has about seven acute teeth at the apex, the middle one being a little larger than the 

 others (fig. 16 a). The presternum in the male is densely and finely punctured ; in the 

 female it is shining and the punctures are well separated from each other. The meta- 

 sternum in the male is closely and very finely punctured in the middle ; in the female 

 the punctures are very fine and well separated from one another. The metathoracic 

 episterna are shining and finely punctured on the inner side, clothed with yellowish 

 pubescence on the outer side. The abdomen is finely and not very closely punctured ; 

 the lateral carina of the basal segment is rectilinear posteriorly (fig. 16). 



