CALANDRIDAS—COSSONIN 45. fae 
longer than broad, laterally arcuate, there being a considerable emargina- 
tion of the middle of the outer border, the humeral angle not rounded, the 
striz rather feebly impressed and moderately broad, the puncta coarse, 
blunt, not very deep, and circular, but growing smaller and sharper toward 
the apex; the interspaces are but little arched. 
Length, 5°9-6:2""; breadth, 2-4—2-7™™. 
Roan mountains, western Colorado, from the richest beds at top of bluff 
rising at head of East Salt creek. Three specimens, Nos. 146, 185, 302, U. 
S. Geological Survey. Green River, Wyoming, from the bluffs behind the 
town. One specimen, No. 871, U.S. Geological Survey. 
CALANDRITES CINERATIUS. 
ie xan ioe dio. 
The specimens are all composed of single detached elytra, which are 
about two and a third times longer than broad, laterally arcuate, but with 
only a slight emargination of the outer border (though some show more 
than others), the humeral angle well 1 vunded; the striz are rather sharp, 
narrow, and rather deeply impressed, the interspaces broadly arched, and 
the puncta small, deep, and circular, becoming finer at the apex. : 
Length, 5°5-6:3"™; average, 5:°8""; breadth, 2°3-2°6"™"; average, 2°5™". 
Roan mountains, western Colorado, from the richest beds at summit of 
crest overlooking head of Kast Salt creek. Hight specimens, Nos. 49, 140, 
151, 167, 206, 1019 and 1020, 1041, 1054, U.S. Geological Survey. From 
near the same beds. [Four specimens, Nos. 72, 180, 957, 1053, U. S. Geo- 
logical Survey. Green River, Wyoming, from the bluffs behind the town. 
One specimen, No. 756, U.S. Geological Survey. 
Subfamily COSSONIN 2A. 
Although the Rhyncolini holds the middle place in point of numbers 
among the existing tribes of Cossoninze in America, it is unrepresented 
both in the European and American Tertiaries. he Dryophthorini and 
Cossonini, very unequally represented now in America, are both known in 
our Tertiaries by a couple of species, but only one of them (and the richest, 
the Cossonini) has been recognized in Kurope, where three species occur. 
