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WICKHAM: NEW MIOCENE COLEOPTERA FROM FLORISSANT. 489 
projecting far beyond the elytral apex. Length, to abdominal tip, 
8.75 mm.; of elytron, 6.50 mm. 
Described from one specimen with counterpart. 
Type.— No. 2,687, 2,688 M. C. Z. Florissant, Col. (No. 7,972 
and 7,976 S. H. Scudder Coll.). 
This is very easily separable from the other Florissant species of the 
family by the much greater size and more elongate form. It looks 
like the recent 7’. hilaris, found in our eastern states. 
MOoRDELLA STYGIA, sp. nov. 
Plate 15, fig. 6. 
Form stout. Head mutilated. Antennae slender, the nine joints 
which are visible subequal in length and hardly incrassate distally. 
Pronotum rather strongly arched, minutely and closely punctulate, 
too finely for definition under a hand lens. Elytron rounded at tip, 
relatively long, sculpture of the same nature as that of the prothorax 
but even less pronounced. Under surface of body somewhat rugosely 
punctulate on the meso- and metasternal flanks, less strongly and a 
little less closely on the abdomen. Anal style short and stout. Legs 
small, not very stout. Length, to elytral apex, 4.35 mm.; of elytron, 
3.20 mm. 
Described from one specimen. 
Type.— No. 2,689 M. C. Z. Florissant, Col. (No. 9,968 S. H. 
Seudder Coll.). 
There should be no difficulty in recognizing this species. It is 
considerably smaller than the Florissant fossil Mordella lapidicola and 
much larger than either of the two species of Mordellistena described 
from these shales. I have placed it in the former genus, in preference 
to the latter, on account of its size and rather heavy build. 
MOoRDELLISTENA SCUDDERIANA Wickham. 
’ Four specimens, No. 2,690-2,693 M. C. Z. (No. 5,425, 6,269, 10,241, 
11,186 S. H. Scudder Coll.), none with counterparts. 
