WICKHAM: FOSSIL ELATERIDAE OF FLORISSANT. 519 



ATHOUS CONTUSUS, sp. nov. 

 Plate 6, fig. 3, 4. 



Form very elongate, subparallel. Head moderately coarsely and 

 fairly closely punctured. Antennae slender, and, when complete, 

 probably reaching or passing the pro thoracic hind angles. Only a 

 few of the joints are well defined and these are scarcely serrate. Pro- 

 thorax long, narrow, the sides not in good condition, apparently wider 

 at base than at apex, hind angles only moderately pronounced, flanks 

 rather closely but not coarsely punctured, prosternum more strongly. 

 Elytra long, conjointly rounded at apex, strongly sculptured, the 

 punctures of the striae rounded, separated longitudinally by their 

 own diameters or a little more. Abdominal punctuation fine, moder- 

 ately close. Length, from front of head to elytral apex, 11.15 mm.; 

 of elytron, 7.65 mm. 



Described from one specimen. 



Type. No. 2,727 M. C. Z. Florissant, Colo. (No. 8,346 S. H. 

 Scudder Coll.). 



The specimen is preserved in such a way as to show the upper side 

 of the head and elytra and the details of the underside of the pro- 

 thorax, due to the manner of splitting the stone. It retains a portion 

 of the raised frontal margin and the aspect is quite that of Athous. 



ATHOUS FRACTUS, sp. nov. 

 Plate 6, fig. 5. 



Form elongate. Head with a rather well-pronounced frontal mar- 

 gin, surface finely punctate and pubescent. Antennae weakly serrate, 

 slender, the basal and apical joints poorly defined, but in life the 

 antennal tip evidently attained or passed the pro thoracic hind angles. 

 Prothorax very little broader than long, surface finely, not closely 

 punctate and pubescent. Sides very little arcuate, angles small, the 

 hind ones not in good preservation but evidently carinate and at least 

 moderately prominent. The notch in front of the angle, as shown 

 on the figure, is perhaps adventitious. Scutellum oblong. Elytra 

 broken at tip but apparently, if complete, not much, if any, less than 

 three times as long as the prothorax, finely striate, ,the striae with 

 irregularly spaced, round, or often elongate or elliptical, punctures 



