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WICKHAM: NEW MIOCENE COLEOPTERA FROM FLORISSANT. 447 
COLLOPS DESUETUS, sp. nov. 
Plate 5, fig. 5 
Smaller than C. priscus. The specimen is too poorly preserved to 
make out much besides the proportions of the head, prothorax, and 
elytra, which are about as in the recent C. wittatus. Eye rounded. 
Antennae and legs wanting. ‘The elytra are scabrous and with a sub- 
suleate effect such as is faintly indicated in several of the recent North 
American species of this genus. Length, from front of head to tip of 
abdomen, 4.45 mm.; to tip of elytra, 4.10 mm. 
Described from one specimen, with counterpart. 
Type.— No. 2,508, 2,509 M. C. Z. Florissant, Col. (No. 12,020 
and 12,021 S. H. Scudder Coll.). 
: In general appearance, this insect is so much like a Collops that I 
feel fairly confident of the generic reference. It is likely that No. 
2,510 M. C. Z. (No. 11,273 S. H. Scudder Coll.) represents the same 
species. 
| 
| COLLOPS EXTRUSUS, sp. nov. 
| Plate 5, fig. 6-7. 
| 
Of the usual subovate form, broader posteriorly. Head relatively 
rather small, rounded, antennae weakly serrate and without much 
modification of the basal joints. Prothorax wider than the head but 
too much crushed for description. Elytra broader behind, surface 
not well preserved but showing no suleations and apparently with 
traces of hairs. Legs, so far as shown, slender. Abdomen distended, 
probably abnormally, so as to reach far beyond the elytra, the seg- 
ments banded with brownish as shown in the figure. Length, to tip 
af abdomen, 8.15 mm.; of elytra, 4.60 mm. 
) Described from one specimen, with counterpart poorly preserved. 
| Type.— See oll, 2.512 M. C. Z.. Florissant, Col. (No. 13,620 
ina 13,642 S. H. Scudder Coll.). 
3 Not so well preserved as the specimen of Colleps priscus, but ap- 
varently a female of this genus or of one nearly related. The antenna 
8 unfortunately not well preserved at base, and I am not sure whether 
he appearance of a short second joint is due to erosion of what shows 
is the third in the figure. In recent species of Collops the second 
