NO. 1982. FOSSIL COLEOPTERA FROM FLORISSANT— WFCKHAM. 299 



long and truncate anteriorly, top of head closely, rather finely, but 

 distinctly punctured, the punctures barely separated but not con- 

 fluent to any extent. Eye rather small but not much more so than 

 usual in this genus. Antennae about reaching the base of the pro- 

 thorax, second joint short, third distinctly longer than the fourth, 

 eighth somewhat broadened, and, with the ninth, tenth, and elev- 

 enth, forming a distinct but not abrupt club, these last three joints 

 being still wider than the eighth. The eleventh joint seems to have 

 been more or less ovate, but is broken on one antenna. The pro- 

 thorax is somewhat distorted but is about twice as broad as the 

 length along the median line, more coarsely punctured than the 

 head but much less closely, the punctures separated by at least their 

 own diameters and often by more, surface hairy. The sides are 

 apparently rather regularly arcuate, the base distinctly broader than 

 the apex, wliich is arcuately emarginate. Elytra subparallel at 

 sides, pointed at tip, humeri distinct, surface with faint evidences 

 of about eight fine punctured striae, the punctures weak and only 

 evident in good light, the interstitial spaces plainly but not deeply 

 punctate, and hairy. Length, 6.75 mm.; of elytron, 4.40 mm. 

 Width across elytra near humeri, 2.65 mm. 



Type.—Csit. No. 59664, U.S.N.M. 



This insect goes well into Blapstinus, with which it agrees in form, 

 antennal structure, sculpture, and especially in vestiture. The legs 

 are not shown. The abdominal segmentation is only faintly indi- 

 cated through the elytra. The eye seems more anterior than in the 

 recent Blapstini, and reaches the margin of the head, but this may 

 be due to spreading and flattening. Comparing it with recent forms, 

 I should place it in the neighborhood of B. elongatus, but without 

 implying any close relationship between them. 



1 have named this beetle in memory of the late Martin L. Linell. 



Genus PLATYDEMA Laporte. 



PLATYDEMA BETHUNEI, new species. 



Plate 26, figs. 2-5. 



Preserved in dorsal view, lacking the legs, except a small portion 

 of one member. Form rather elongate for this genus. Head rather 

 finely, closely, and quite regularly punctured. Antenna showing 

 ten joints, another being presumably missing, first joint stout, sec- 

 ond small, third elongate, fourth longer than the fifth, distal joints 

 gradually enlarging to form a rather narrow club. Palpus showing 

 a terminal subtriangular joint. Prothorax injured on one edge, but 

 nearly twice as broad as long, perfect side arcuate, most prominent 

 near the middle, very Uttle narrowed at base, front angle prominent 

 and acute, hind angle damaged but apparently sharp, base and 

 apex both nearly straight except near the angles, disk rather finely, 



