WICKHAM: new MIOCENE COLEOPTERA from FLORISSANT. 473 

 DiABROTICA BOWDITCHIANA, Sp. nov. 



Plate 11, fig. 4. 



Form moderately elongate, broader posteriorly. Head, inclusive 

 of jaws, about as long as the pronotum but not equalling it in breadth. 

 Eyes rather large, rounded, very black and strongly outlined in the 

 specimen, the remainder of the head being pale. Antennae slender, 

 so far as shown, but only their basal portions are preserved. Prono- 

 tum about one and one half times as broad as long, sides weakly 

 rounded, apex and base subequal. Elytra a little more than four 

 times as long as the pronotum, finely punctate but with no signs of 

 striae. Legs wanting. Length, 7 mm. 



Described from one specimen. 



Type.— No. 2,600 M. C. Z. Florissant, Col. (No. 3,467 S. H. 

 Scudder Coll.). 



The form was e\adently not unlike that of the recent D. 12-punctaia, 

 though probably more slender. \Miat remains of the elytral sculpture 

 indicates a type more like that of Trirhabda than of any of the North 

 American species of Diabrotica known to me though possibly it may be 

 paralleled in some of the numerous South American representatives of 

 the latter genus to which I have not access. The marmorate appear- 

 ance seems due to the mode of preservation and not to the presence of 

 any definite pattern. The prothorax is pale like the head. The 

 present species is considerably larger than the Florissant fossil D. 

 excsa. 



It is named for Mr. Frederick C. Bowditch of Brookline, Massa- 

 chusetts. 



Diabrotica uteana, sp. nov. 

 Plate 11, fig. 5. 



Form similar to that of D. bowditchiana but a little more robust. 

 Head rather large, antennae shorter and stouter than in most of the 

 recent North American species. Pronotum damaged on one side, the 

 other appears to be but slightly arcuate, the base broader th?n the 

 apex. Elytra four and one half times as long as the pronotum, punc- 

 tuation not distinct, but with some signs of striation near the outer 

 margin. Legs wanting. Length, 4.35 mm. 



Described from a single specimen. 



