OTIORHYNCHID.2—OTIORHYNCHINI. 45 
OTIORHYNCHUS PERDITUS. 
Otiorhynchus perditus Scudd., Bull. U. S. Geol. Geogr. Sury. Terr., 11, 84 (1876); rv, 
766 (1878); Tert. Ins. N. A., 476-477, Pl. vin, Fig. 25 (1890). 
No additional specimens have been found. 
Green river, Wyoming. IF. C. A. Richardson, 8. H. Seudder. 
OTIORHYNCHUS SUBTERACTUS. 
Pix). Big. 8: 
Closely allied to O. perditus, from which it differs in its slightly larger 
size, slightly more curved and stouter rostrum, and somewhat differing 
sculpture of the elytra. The rostrum is nearly twice as long as high, con- 
siderably arcuate, equal, well-rounded at the tip, as much longer than the 
head as it is shorter than the prothorax, nearly smooth; the eyes are trans- 
verse, slightly broader above than below, about half as long as the breadth 
of the rostrum. The prothorax is nearly twice as high as long, tapering, 
and a little tumid, the surface minutely subrugulose. The elytra are well 
arched, twice as long as broad, with series of rather feebly punctate, rather 
heavy striae, the puncta shallowly impressed and circular instead of being 
longitudinal as in O. perditus; the interspaces are feebly arched and deli- 
cately subrugulose. 
Length, 9""; rostrum beyond eyes, 1-7""; height of same, 0°8""; length 
of elytra, 6""; height of body, 4™™. 
Roan mountains, at summit of bluffs at head of East Salt creek, west- 
ern Colorado. One specimen, Nos. 54 and 133, U.S. Geological Survey. 
OTIORHYNCHUS TUMB&. 
Otiorhynchus dubius Seudd., Bull. U. 8. Geol. Geogr. Surv. Terr., tv, 766 (1875). 
Otiorhynchus tumbe Seudd., Tert. Ins. N. A., 477, Pl. vin, Fig. 13 (1890). 
The single original specimen is the only one yet known. 
Green river, Wyoming, from beneath the Fish cut. 5. H. Scudder. 
OTIORHYNCHUS FLACCUS. 
Ely we -Pig. 5: 
A pair of elytra in natural juxtaposition of a blackish brown color 
They are fully three times as long as broad, and equal throughout nearly 
