WICKHAM: NEW MIOCENE COLEOPTERA FROM FLORISSANT. 441 
exclusive of the extruded sex organ, 9.20 mm.; of the elytra, about 
6.50 mm. Width of prothorax, 3.25 mm. 
Described from one specimen. 
Type— No. 2,483 M. C. Z. Florissant, Col. (No. 6,898 S. H. 
Seudder Coll.). 
Very much smaller than the Florissant fossil C. haydeni and with 
relatively shorter elytra than C’. gahani. I think there is no doubt of 
its being a true Chrysobothris, but am unable to suggest its affinities 
with any of the numerous living North American species. 
CHRYSOBOTHRIS COLORADENSIS, sp. nov. 
Plate 3, fig. 5. 
- Form stout. Head wanting. Pronotum not in very good condi- 
| tion but apparently broadest near the base, finely and rather closely 
but not deeply punctate, without the reticulate effect of Anthaxia. 
| Elytra bluntly pointed at apex, outer edges not serrate, punctuation 
fine and quite sparse though not well preserved. Front femur moder- 
ately stout, not visibly toothed, tibia, though broken at tip, evidently 
a little curved. Middle tibia distinctly arcuate, the tarsal joints 
longer than normal in recent Chrysobothris but their articulations are 
not certainly definable. Length, from front margin of prothorax to 
elytral apex, 4.75 mm: 
Described from one specimen. 
Type.—No. 2,484 M.C. Z. Florissant, Col. (No. 3,733 S. H. Scud- 
der Coll.). 
| Evidently a buprestid and probably a Chrysobothris with the facies 
of the recent C. atrifasciata or C. ulket. It is small for the genus but 
several of the recent species are of practically the same size. 
| 
| PTOSIMA SILVATICA, sp. nov. 
| Plate: 3, fig. 6. 
| 
hk Form not very elongate. Head damaged so as not to exhibit its 
true shape. Prothorax very short, base bisinuate, punctuation fine 
and sparse on the disk, stronger and crowded on the sides, everywhere 
shallow. Elytra broken at apex, finely and regularly striatopunctate, 
/he striae impressed, strial punctures elliptical or elongate, well sepa- 
i 
| 
