262 FOSSIL COLEOPTERA 



antennae rather short. Prothorax projecting anteriorly, the outline of the 

 front edge of the fiank strongly emarginate below the overhang, siile margin 

 strong, relatively little curved in profile, back only slightly arched, notum 

 strongly and closely moderately coarsely punctured, flanks more sparsely. 

 Elytra with fairly regular striae of small, rounded, distant punctures, the 

 basal region confusedly punctate for the full width. Abdomen obscurely 

 reticulate. Length, 2.65 mm. 



Described from one specimen taken by myself at the Wilson 

 Ranch, near Florissant, Colorado. The type is in my collection. 



Considering its small size, this insect is remarkably well pre- 

 served. It is more like Gastrallus than anything else that I know 

 and if one could be sure that the antennal structure is correctly 

 interpreted the assignment in this neighborhood might be made 

 with a good deal of confidence. 



Aphodius inundatus sp. nov. (Plate VII, fig. 15.) 



Form quite stout. Head of moderate size, clypeus broadly rounded, 

 anteriorly sparsely punctured, the punctuation becoming coarser and 

 closer on the front and again finer and sparser on the vertex, but everywhere 

 distinct and well separated. Prothorax narrower at apex than at base, 

 sides broadly arcuate, surface about evenly and extremely closely though 

 not confluently punctured. Elytra broad, the extreme tips not exposed, 

 surface regularly striate, the striae practically equal in width to the inter- 

 spaces, neither with any sign of punctuation. The interspaces are per- 

 fectly flat, as are also the bottoms of the striae. Scutellum small, tri- 

 angular. Underside finely and, in the main, moderately closely punc- 

 tured. Legs very short and stout. Length, as preserved, 6.25 mm.; in 

 life, a little more. 



Described from one specimen, with counterpart, collected by 

 myself on the Wilson Ranch near Florissant, Colorado. The type 

 is in my collection. 



The underside shows the clypeus a little better than the other 

 and indicates that it may have had a broad shallow anterior emar- 

 gination. I cannot find any. recent species with just this type of 

 sculpture and all the other Florissant fossil Aphodii diff'er by 

 the same character. Possibly a perfect specimen would indicate 

 another generic reference. 



Serica cockerelli sp. nov. (Plate VII, fig. 16.) 



Form stout, ventricose in side view. Head, in profile, about half the 

 height of the prothorax, the latter not so high at apex as at base, sculpture 

 weak and obscure. Elytra without defined sculpture, other than faint 

 indications of alternations of striae and interstitial spaces. Abdominal 



