158 TERTIARY RHYNCHOPHOROUS COLEOPTERA. 
Tribe HYLURGINI 
This tribe is represented in the European Tertiaries by two species of 
Hylesinus, found at Aix and Brunstatt, an undescribed species of Hylurgus 
recognized by Serres at Aix, and an amber species referred to Hylesinites 
by Germar. In America a species of Hylesinus occurs at Florissant, one 
of Polygraphus at the Roan mountains, and borings referred provisionally 
to Hylastes in the interglacial beds at Scarboro, Ontario. 
POLYGRAPHUS Erichson. 
A northern genus with only two species, one belonging to the Old 
World, the other to the New. The single fossil species referred below to this 
genus can certainly, from its much stouter form, not properly fall here, and is 
placed here only because it does not appear to be very distant from it. No 
fossil species has ever before been referred to this genus. 
PoLYGRAPHUS WORTHENI. 
: Mo 2 
Pl xin hoe ioe 
A dorsal view of a single specimen showing prothorax and elytra is all 
that is preserved. The prothorax tapers rapidly forward, with rounded 
sides and a strongly convex front, giving a paraboloid curve to the front 
of the body; it shows a very faint median longitudinal impression and is 
pretty uniformly punctate, the puncta showing a tendency to a longitudinal 
arrangement, being more distant from those at either side than from those in 
front and behind; there are besides some finer punctuations on the disk. 
Elytra more than half as long again as their combined breadth, broadest in 
the middle and then rapidly tapering so as to make the form of the body 
pretty regularly long oval; the elytra are more distantly punctate than the 
prothorax, but the puncta are slightly larger and arranged in tolerably 
regular serial rows, in all about a dozen rows, separated by twice the 
diameter of the puncta, the puncta of the same row similarly separated. 
Length, 3™; breadth, 1-75™". 
Roan mountains, western Colorado. One specimen, No. 959, U.S. 
Geological Survey. 
Named in memory of the Illinois paleontologist, the late Prof. A. H. 
Worthen. 
