DIABEOTICA. 507 



12. Diabrotica championi. 



Flavous, the head and breast black ; thorax without impressions ; elytra closely punctured, with three trans- 

 verse black bands, the third band slightly concave on its posterior margin. 



Length 3 lines. 



Head impunctate, with a fovea between the eyes ; antennae two thirds the length of the body, fulvous, the 

 third joint one half longer than the second; thorax one half broader than long, flavous, without 

 foveas ; scutellum black ; elytra closely punctured, with a narrow transverse black band at the base and 

 another immediately in front of the middle, and a third behind the middle, the latter slightly curved ; 

 legs fulvous or flavous. 



Hab. Nicaragua, Chontales (Janson); Panama, Bugaba, Volcan de Chiriqui (Cham- 

 pion). 



Closely allied to D. paradoxa and D. albo-signata, but differing in the non-impressed 

 thorax, the entirely fulvous antennae and legs, and in the shape of the posterior band 

 of the elytra (this band has its posterior margin concave, not rounded) ; the bands of the 

 elytra extend to the sutural (but not to the lateral) margin and have a very slight viola- 

 ceous tint, and the flavous space between the two anterior bands is slightly narrower than 

 the space dividing the second and third bands, the third band being wider than the two 

 others. In one specimen from Chiriqui the basal band is on each side divided into 

 two subquadrate spots, the inner one of which is connected at the suture with the second 

 band, so as to include a ±-shaped flavous space ; the single specimen from Nicaragua 

 agrees with the others. 



13. Diabrotica viridi-fasciata. (Tab. XXIX. fig. 15.) 



Fulvous, the head and the breast black ; thorax obsoletely tri-foveolate ; elytra testaceous, with three trans- 

 verse, slightly curved, metallic blue bands placed at equal distances one from another. 



Length 2f lines. 



Head impunctate ; antennse slender, flavous, the eighth joint slightly darker, the third joint one half longer 

 than the second ; thorax quadrate, impunctate, shining, with a small basal and two longitudinal depres- 

 sions ; elytra finely punctured, with a longitudinal depression below the shoulders. 



Hab. Costa Eica, Cache (Rogers) ; Panama, Bugaba, Volcan de Chiriqui (Champion). 



In this species the three elytral bands, of which the one at the base is rather 

 narrower than the others, do not extend to the extreme lateral margin, but are more or 

 less connected at the suture ; the apices of the elytra being broadly flavous. D. viridi- 

 fasciata differs from the two preceding species by the impressed thorax, and by the 

 bands of the elytra being metallic blue in colour and separated by spaces of equal 

 width. A specimen from Cache is figured. 



14. Diabrotica signifera. (Tab. xxxi. fig. 3.) 



Flavous, the head, the intermediate and apical joints of the antennse, the tibiae, tarsi, and breast black; thorax 

 with two obsolete depressions ; elytra finely punctured, with three narrow transverse black bands, the 

 first band deeply indented. 



Length 2 lines. 



Head impunctate ; antennse as long as the body, the second and third joints very minute, the sixth to the 



3t2 



