SCUDDER ON FOSSIL INSECTS. 767 



rows of frequent, rounded, moderately large and shallow punctures, and 

 between eacli pair of rows a similar row with smaller punctures. 

 Length of body 6"^"^, of elytra 4.55'^'", of eyes 0.5'^°i. 



CUECULIONID^. 



Sitones grandwvus Scudd., Bull. U. S. Geol. and Geogr. Surv. Terr, ii, 

 83-84. — A single specimen, found by Mr. Eichardson. 



Sylohius provectus Scudd., Bull. U. S. Geol. and Geogr. Surv. Terr, ii, 

 86. — A single specimen was found by Mr. Eichardson. Another speci- 

 men (No. 4051), taken by Mr. Bowditch at the same locality, shows the 

 character of the rostrum. The specimen is strangely preserved, as there 

 appears to be a second rostrum, a perfect counterpart of the first, 

 attached to it at the tip; perhaps this belongs to another individual, of 

 which the rostrum only is preserved. The rostrum is about as long as 

 the thorax, scarcely tapering as viewed laterally, gently curved, with a 

 median, lateral, longitudinal groove, directed toward the middle of the 

 eye, just as in II. confusus Kirb., besides the antennal scrobes, which are 

 directed obliquely toward its base. 



Gymnetron LeContei. — A single well-preserved specimen, with its 

 reverse (Nos. 4030, 4047), lies in such a position as to show a partly 

 lateral and jpartly dorsal view ; the legs are also preserved, so that it is 

 the most perfect of the Green Eiver Coleoptera. The small head, long 

 and slender, straight, and drooping snout, the tapering thorax, broad 

 and short striate elytra, thickened femora, and long and slender tibiae 

 leave little doubt that it should be referred to Gymnetron or to its im- 

 mediate vicinity. It is very nearly as large as G. ieter Schonh., with 

 which it closely agrees in almost every part. The third tarsal joint is 

 similarly expanded. The real length of the rostrum cannot be deter- 

 mined from the position of the insect, but it is apparently as long as the 

 bead and thorax together, is very nearly straight, slender, scarcely 

 enlarged, and obliquely docked at the tip ; only a portion of the anten- 

 nal scrobes can be seen ; this is in the middle of the beak, where the 

 groove is narrow, deep, sharply defined, and inclined slightly downward 

 toward the base of the beak. The thorax is subrugulose, and the 

 surface of the elytra smooth, with distinct, but not deeply impressed, 

 very faintly punctured striae. The whole specimen is piceous. 



Length of body S.lS'a'", of snout l"^"^ ?, of head and thorax 0.9"^°^, of 

 thorax 0.75'^'^, of elytra 2.25'°'^, of hind tibire l.S™™; distance apart of 

 elytral striae 0.1""°. 



Cryptorhynchus annosus Scudd., Bull. U. S. Geol. and Geogr. Surv. Terr, 

 ii, 80-87. — A single specimen, found by Mr. Eichardson. 



SCOLYTID-^. 



Dryocmtes impressus Scudd., Bull. U. S. Geol. and Geogr. Surv. Terr, ii, 

 83 (Trypodendron). — Mr. Eichardson obtained a single specimen, upon 



