RHYNCHITIDA—RHYNCHITIN #. 15 
‘ 
EUGNAMPTUS DECEMSATUS. 
Eugnamptus decemsatus Scudd., Bull. U. S. Geol. Geogr. Surv. Terr., tv, 764-765 
1878); Tert. Ins. N. A., 482, Pl. vii, Fig. 12 (1890). 
b] ’ > 
The single specimen from which the species was described is still the 
only one known. 
Green river, Wyoming. §S. H. Scudder. 
RHYNCHITES Herbst. 
A numerous group of nearly cosmopolitan distribution, though much 
richer in the northern than inthe southern hemisphere. We have more 
than a dozen species in the United States, occurring mostly in the West, but 
it is far more abundant in the Old World. Four fossil species have been 
described from the European Tertiaries, two each from Rott and Oeningen, 
and a single species is described below from Florissant. The last does not 
agree well with any of the European fossils, but is perhaps nearest to R. 
silenus Heer, from Oeningen, which is a much slenderer insect, and the only 
one which approaches ours in the length of the snout. As will be seen fur- 
ther on, it is quite probable that some of the European forms referred ‘o 
Rhynchites will have to be placed in the subfamily Isotheine. According 
to Lacordaire, the beetles of this genus frequent by preference flowers and 
the leaves of trees. 
RHYNCHITES SUBTERRANEUS. 
Rivne biol: 
The head is smooth, except for a slight transverse wrinkling, and, 
with the beak, which is very long, straight, and moderately stout, as long 
as the elytra. The eyes are rather small, circular, situated just next the 
base of the beak. The antenni are inserted just before the middle of the 
beak and are about three-fourths its length. Their structure is exceedingly 
similar to that of our living R. bicolor Fabr., the club appearing as if made 
up of four joints, of which the last three are two or three times broader 
than those of the stalk and perhaps half as broad again as long, with 
rounded sides, while the basal joint of the club is cuneiform, truncate at 
