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Wickham — New Fossil Coleoptera from Florissant. 49 



Aphodius Illiger. 



A. laminicola n. sp. Form stout, evidently a little more so 

 than in the recent A. fimetarius, head narrowed anteriorly, 

 clypeus almost squarely truncate at middle, the angles rounded. 

 Prothorax broadest about the middle, sides apparently regularly 

 arcuate but not alike in the specimen and therefore incapable 

 of exact definition. The appearance is that the base was 

 distinctly broader than the apex. Sculpture obliterated by the 

 impressions of the underside, which show through. Scutel- 

 lum (?) large, almost equilaterally triangular, the basal (anterior) 

 angles obliquely truncate, basal region rugosely punctate, 

 middle finely carinate. Elytra subparallel to an indeterminate 

 distance behind the middle, regularly conjointly rounded at tip, 

 strige fine, single, finely and not closely punctured, interspaces 

 broad and very nearly or quite flat with a few scattered fine 

 punctures, sutnral interval narrower than the next. Legs 

 stout, middle tibia slightly bent at base, tip moderately ex- 

 panded, median oblique ridge faintly indicated. Length 9 , 70 mm , 

 of elytra 5'75 mm , of middle femur about L70 mm , of middle tibia 

 L35 mm , of middle tarsus about l'35 mm , conjoint width of elytra 

 about middle 4-80 ,Qm . 



Station number 14. Collection number 231, Florissant 

 Expedition 1906. Received from Prof. Cockerell. The type 

 is in the Peabody Museum of Yale University (Cat. Nt>. 13) ; 

 a second, poorer specimen, a reverse, from the same station 

 and with the catalogue number 140, is in the Museum of the 

 University of Colorado. 



The type specimen is very puzzling, on account of the 

 peculiar state of preservation ; the parts of the under side are 

 largely shown through and interfere with the view of the 

 upper surface. Thus I am not sure whether the structure 

 described as the scutellum may not be the mesosternnm, and 

 on account of similar confusion I have not tried to give 

 measurements for the head and prothorax. Of the legs, the 

 two middle femora show plainly, the front and hind ones 

 indistinctly. One middle tibia and the tarsus of the opposite 

 leg are distinct, 



Amphicoma Latr. 



A. defuncta n. sp. The specimen shows only the tips of 

 the elytra, with ill-defined exposed portions of the abdominal 

 apex, some traces of hind wings, a well preserved hind tibia 

 and tarsus and poorly indicated portions of the other leg of 

 this pair. Elytra strongly dehiscent and tapering to the tip, 

 which is rounded, surface clothed with hairs which are appar- 

 ently longer and sparser than in the recent California A. ursina. 

 The outer edge of each elytron shows a fine marginal bead, as 

 in that species; the sutural bead is less strongly marked. JSTo 



Am. Jour. Sci. — Fourth Series, Vol. XXIX, No. 169. — January, 1910. 

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