H. F. WICKHAM 265 



shows them fairly well, here they appear to be nearly regularly rounded, 

 the apex a little narrower than the base, no spines, tubercles, nor other 

 armature. The width is not far from twice the length. Pronotal sculp- 

 ture of moderately coarse, very crowded punctuation, closer at the sides 

 and leaving a nearly smooth fairly wide median line on the basal half, 

 vestiture sparse and fine. Elytra long, four times the prothoracic length, 

 sides subparallel, apices rounded, punctuation minute, sparse, each punc- 

 ture with a fine, short hair. Legs short, only moderately stout, hairy. 

 Length, to abdominal apex, 18.75 mm.; to elytral tip, 16 mm.; of one ely- 

 tron, 11.15 mm. 



Described from one specimen, with counterpart, collected by 

 myself on the Wilson Ranch near Florissant, Colorado. The type 

 is in my collection. 



Quite unlike any of the other described Florissant Ceramby- 

 cidae. I have placed it in the Callidioides on account of the form, 

 the short legs, and the relatively short third antennal joint, and 

 have selected Hylotrupes to contam it for the present because it 

 seems not unlike that genus in sculpture and leg structure. The 

 description was made up from both slabs while the figure repre- 

 sents only the reverse. This will account for the appearance of 

 certain characters in the diagnosis which are not brought out in 

 the drawing. 



Acanthoderes lengii sp. nov. (Plate VIII, figs. 22, 23.) 



Body formed much as in the recent A. quadrigibbus. Head short, broad, 

 antennal tubercles strong. Antennae longer than the body but not ex- 

 cessively so, first joint clavate, second small, third elongate but nearly 

 equalled by the fourth, the fifth, sixth and seventh successively a little 

 shorter, eighth to eleventh not quite so long as the seventh but subequal 

 among themselves. No antennal hairs are visible nor is there any evidence 

 of coarse punctuation on the joints, though the scape is roughened. Pro- 

 thorax broad and short, the front coxae well separated by the prosternum. 

 Elytra, as preserved, rather strongly tapering posteriorly, not armed at 

 apices. At their bases they show several scattered deep punctures, only a 

 portion of which are represented on the figure. Legs wanting. Length, 

 11.25 mm.; of antenna, on chord of arc shown in the figure, 15.50 mm. 



Described from a single specimen, with counterpart, collected 

 on the Wilson Ranch near Florissant, Colorado. The type is in 

 my collection. 



The characters of this fossil indicate that it is a good Acantho- 

 deres. A specimen with counterpart in the Scudder collection, 

 bearmg the numbers 3916 and 7747, may also belong here, but 



TRANS. AM. ENT. SOC, XL. 



