DIABKOTICA. 545 



their femora sometimes testaceous below ; the intermediate legs testaceous, their tibiae black ; the posterior 

 legs entirely yellowish-white, their tarsi sometimes black. 



Hab. Panama, Volcan de Chiriqui {Champion). 



In this somewhat parallel-shaped insect the central transverse band of the elytra is 

 very regular and straight, and the apex of each elytron is of the same colour as the 

 band. The obsolete sulcation of the elytra and their semi-geminate punctuation are 

 further peculiar to D. funesta. 



97. Diabrotica nigrina. 



Black, the apical joints of the antennae flavous : thorax testaceous, very obsoletely depressed ; elytra black, 

 distinctly punctured, a transverse band at the middle and the apices, flavous. 



Length 2| lines. 



Head impunctate, the clypeus with a narrow distinctly raised central ridge ; antennae two thirds the length of 

 the body, black, the apical three joints flavous, the extreme apex of the terminal one black, the third 

 joint twice the length of the second ; thorax twice as broad as long, the sides nearly straight, the surface 

 impunctate, with a scarcely visible depression at the sides ; elytra finely and not very closely punctured, 

 with an obsolete depression below the scutellum and another near the sides, the transverse flavous central 

 band very narrow and extending completely across and slightly widened at the lateral margins, the apices 

 also narrowly flavous ; underside and legs black. 



Hab. Panama, Bugaba {Champion). 



Shorter, and more convex and dilated, than I), funesta; the elytra closely and more 

 distinctly punctured, and without sulci ; the legs entirely black. 



98. Diabrotica bisignata. 



Black, the apical joints of the antennas, the thorax, abdomen, and femora flavous ; thorax bifoveolate ; elytra 

 black, minutely punctured, a transverse band at the middle, and an oblique band at the apex of each, 

 flavous. 



Length l|-2 lines. 



Head black, the clypeus with a distinctly raised central ridge ; antennae two thirds the length of the body, 

 black, the third joint twice as long as the second, the basal joints obscurely stained with fulvous, the apical 

 three flavous, the extreme apex of the terminal joint black; thorax twice as broad as long, flavous, 

 the disc impunctate, with a distinct transverse depression not extending to the sides ; scutellum black ; 

 elytra rather widened towards the middle, finely punctured (the punctuation a little more distinct at the 

 sides, where it is arranged in nearly regular and slightly curved lines), the transverse flavous band at the 

 middle widening a little inwardly and not extending to the suture but reaching the lateral margins, the 

 latter also flavous nearly to the base, the apical band oblique in shape (but otherwise exactly resembling 

 the central one) ; femora and abdomen flavous or fulvous, the tibiae and tarsi black. 



Hab. Panama, Bugaba {Champion). 

 Many specimens. 



99. Diabrotica dohrni. 



Black, the apical joints of the antennae, the thorax, and abdomen testaceous ; elytra black, sparingly punc- 

 tured, a large transverse spot at the middle, and another spot of more rounded shape near the apex of 

 each, flavous. 



Length 2| lines. 



Hab. Panama, Volcan de Chiriqui {Champion). 

 biol. centr.-amee., Coleopt., Vol. VI. Pt. 1, October 1887. 4 a 



