FOSSIL COLEOPTERA 7 



Station number and collector not specified. The tvpe and only known 

 specimen -svas received directly from Professor Cockerell and is in the 

 Museum of the University of Colorado. 



This insect has given me a good deal of trouble to place. It 

 reminds one of the slender Platyni of the 'larvalis group, and is 

 also similar to some of the European Anophthalmi. The lack of 

 a strongly defined neck has led me to prefer Trechus as a final 

 disposition, in preference to Plaiynus, but I cannot say that I am 

 very well satisfied with the assignment. 



Amara Bon ell i. 



A. COCKERELLI n. sp. (Plate I, Fig. 1.) Intermediate in size between 

 A. poivellii, and A. dance, from these shales, but in form more like A. re- 

 vocata. A species is indicated in which the prothorax was narrower behind 

 as in the recent subgenus Cyrtonotus, this segment being broadest well in 

 front of the middle, whence the sides are arcuate to the anterior angles, 

 which are not prominent, posteriorly they are nearly straight and only 

 slightly sinuate to the base, thoracic disk without distinct sculpture except 

 a strong median line. Head as broad at base as the prothoracic apex. 

 Eyes rather small and anterior as in all of the species described by Dr. 

 Scudder. Elytra with finely impressed narrow striae, apparently impunc- 

 tate and about equally distinct to the lateral margins, scutellar stria free 

 at tip and moderately long. Legs and antennee wanting. Length, 9.25 

 mm.; of elytron, 5.50 mm. Width of elytra, 3.75 mm. 



Station number 11 or 12. One specimen, showing obverse and reverse, 

 with the collection numbers 70 and 191. The type is in the Museum of the 

 University of Colorado. It was collected by Professor Cockerell. for whom 

 it is named. 



This fossil seems undoubtedly distinct from any of Dr. Scud- 

 der 's species and like them is doubtfully a true representative of 

 the genus. Except for the great difference in size, I should have 

 referred it to A. revocafa, the figure of which it fairly closely 

 resembles, especially in the form of the prothorax. 



A. DAN'^ ScuDD. Station number 13. A fine paired specimen from this 

 place was collected by S. A. Eohwer. 



CcELAMBus Thorns. 



C. MIOCEXUS n. sp. (Plate II. Figs. 1 to 6.) Form scarcely elongate for 

 this genus, tapering towards both ends. Head large, antennte not well pre- 

 served but sufficiently well shown to indicate that they were rather stout. 

 Prothorax possibly not complete at the sides but in general tapering from 



