AMERICAN COLEOPTERA. 157 



tusely rounded. Anteriorly eraarnjinate, posteriorly sinuate, with the 

 angles distinct. Above with a longitudinal impressed line, with vague 

 impressions laterally. 



Prosterninn (/;, front view; /, side view) prolonged, behind the 

 ^- i- cox.Ts broader and flattened, received in an excavation of 

 the mesosternum, meeting the prolongation of the meta- 

 sternum between the middle cox;i3. 

 Coxa? cavities rounded, open behind closed in front by the sternum 

 and epimera, completed behind by the sternum of the mesothorax. 

 Mesosferunm short, separating the middle coxoe, concealed at its 

 middle by the prolongation of the prosternum, side pieces 

 xw, diagonally divided, the epimera alone attaining the coxae. 

 4__\ Coxal cavities rounded, closed in front by the sternum, 

 '^ laterally by the epimera of the mesothorax and the epi- 

 sternum of the metathorax, and behind by the meta- 

 sternum. 



Mefasternum broad, truncate posteriorly, side pieces simple, consist- 

 ing of the episterna alone. 



(hxse broad, separated from the metathorax by a nearly straight su- 

 ture, contiguous in the middle and attaining the margin of the body, 

 cutting off all contact between the metathoracic parapleurae and the 

 abdomen. 



Ahilomen with six ventral segments, the anterior three connate. 

 The first segment is entirely lateral and the second in contact with the 

 coxa3 at its middle. The second, third and sixth segments are much 

 longer than the others. 



EUjtra oval, moderately convex, slightly flattened at the sides, hu- 

 meri rounded. Epipleural fold broad anteriorly, suddenly narrowing 

 opposite the hind coxae and not reaching the apex of the elytron. 

 Scutellum moderate, triangular. Under wings well developed, though 

 probably never used, as the elytra are in close contact and, it is proba- 

 ble, totally inseparable by the action of the insect. 



Legs slender, femora slightly thickened, tibiae with two small termi- 

 nal spurs. Front and middle tarsi with the first four joints small, sub- 

 equal, the terminal joint longer. Posterior tarsi with the first 

 and last joints longer, the intermediate short and equal. Claws 

 small, simple. The joints of the tarsi are rounded beneath, 

 and have (excepting the last joint) a small pubescent spot on 

 each side. 

 The characters, as above given, drawn from the lower portion of the 



