\\ICKHAM: NEW MIOCENE COLEOPTERA FROM FLORISSANT. 447 



COLLOPS DESUETUS, Sp. UOV. 

 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. mttatus. Eye rounded. 

 Antennae and legs wanting. The elytra are scabrous and with a sub- 

 sulcate 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 'l2,021 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 sulcations 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 

 of abdomen, 8.15 mm.; of elytra, 4.60 mm. 



Described from one specimen, with counterpart poorly preserved. 



Type. No. 2,511, 2,512 M. C. Z. Florissant, Col. (No. 13,620 

 and 13,642 S. H. Scudder Coll.). 



Not so well preserved as the specimen of Collops priscus, but ap- 

 parently a female of this genus or of one nearly related. The antenna 

 is unfortunately not well preserved at base, and I am not sure whether 

 the appearance of a short second joint is due to erosion of what shows 

 as the third in the figure. In recent species of Collops the second 



