SCOLYTIDA1—SCOLYTIN.E—TOMICINI. 157 
lutely so numerous in the living American fauna, have not been found in 
the European Tertiaries, though two species of Dryoccetes have been recog- 
nized in the American rocks. The remaining group, the Hylurgini, is found 
in the Tertiaries of both worlds, but has more species in Europe than in 
America. 
Tribe TOMICINI. 
A couple of species of Dryoccetes from Green River are the only fossils 
of this tribe known, whether in America or Europe, a number exceedingly 
small in comparison with its present development in America. 
DRYOCCETES Eichhorn. 
A genus of small beetles, less than two dozen in number, of which 
about three are North American, and one South American. It has been 
found fossil only at Green River, Wyoming, whence two species are known. 
‘able of the species of Dryocetes. 
Punctures of elytra arranged to some extent in longitudinal series... .. - -- - iMPVessuUs. 
Punctures of elytra not distinctly serial anywhere .......-.-........--- carbonarius. 
DRyYOC@TES IMPRESSUS. 
Trypodendron impressus Scudd., Bull. U. 8. Geol. Geogr. Surv. Terr., 11, 83 (1876). 
Dryocetes impressus Scudd., Bull, U. S. Geol. Geogr. Sury. Terr., Iv, 767-768 (1878); 
Tert. Ins. N. A., 470, Pl. vim1, Fig. 28 (1890). 
Although several specimens of this species were at hand in preparing 
the original description, not a single one has since been found. 
Green River, Wyoming. 
DRYOC@TES CARBONARIUS. 
Dryocetes carbonarius Seudd., Bull. U. 8. Geol. Geogr. Surv. Terr., Iv, 768 (1878); 
Tert. Ins. N. A., 470-471, Pl. vit, Fig. 6 (1890). 
This species has not been found since the original specimen was 
obtained. 
Green River, Wyoming. 
