OTIORHYNCHIDA2—PHYLLOBIINI. 59 
are almost exclusively confined to California. Three species have been 
found in the Tertiaries of Green River, White river, and Roan mountains, 
one referred here with much doubt, but none from Florissant, so that it 
may be regarded as one of the characteristic features of the Gosiute fauna. 
The species placed here are known principally by their elytra only, 
which agree closely with those of our living forms. The abdomen is pre- 
served in an instance or two, and shows the third and fourth segments not 
more than together equal to the second, which is separated from the first by 
an arcuate suture; the hind coxz are widely separated, and the intercoxal 
process is broadly arcuate in front; the abdomen is rather narrow, narrow- 
ing posteriorly, well rounded apically, and the middle coxe are narrowly 
separated. 
Table of the species of Scythropus. 
Puncta of elytra feebly impressed... ..-- SRE Ce, REISE er ae subterraneus. 
Puneta of elytra deeply impressed, at least in the basal half. 
Larger species. Strive of elytra equally distant throughout... .-.-. somniculosus, 
Smaller species. Striew of elytra much more widely "separated in the middle of 
thevelytranuhaniaitneiDAse ng nt sate aoe cds eigen sein ee cere eee eee abacus. 
ScYTHROPUS SUBTERRANEUS. 
PL ix, Fig. 14. 
Single elytra only are known, excepting that a few stones show a pair 
found together, in a couple of instances spread and accompanied by the 
to} ’ J 
abdomen, and in another showing an upper view of head and thorax. The 
head is short and nearly concealed beneath the thorax ; eyes small, oval, 
transverse (in this respect not agreeing with living species); beak half as 
lone as the prothorax, and somewhat longer than broad, truneate with 
fo) I ’ to} 
rounded angles. Prothorax bullate, somewhat broader than long 
3D) 
densely 
and not very finely punctate, anteriorly constricted. Elytra from two and 
a quarter to two and a third times as long as broad, tapering beyond the 
middle by the strong curvature of the outer margin, while the sutural 
margin is straight, the humeral angle well rounded, the apex subacuminate; 
there are ten rather delicately punctate, sharply impressed strize, the inter- 
