1913] Fossil Beetles from Florissant. 365 



Cistela Fabr. 



C. antiqua n. sp. (Plate IV). Form fairly stout. Head finely 

 rather densely punctulate and hairy. Eyes, as shown by their sockets, 

 moderately large. Antennee slender, the basal two joints not definable, 

 the remainder sub-equal, scarcely serrate, the distal ones not incrassate; 

 if directed backwards, the antenna would reach nearly to the basal 

 fourth of the elytra. Prothorax broad at base, narrowed at apex, 

 sides gently arcuate, surface finely punctulate and hairy like the head, 

 but more distinctly. Scutellum of moderate size, sculptured like the 

 thorax. Elytra not alike in outline on account of the specimen being 

 crushed askew, but the left one, which seems to be the better preserved, 

 is a little more than four times the length of the prothoracic median 

 line, tapering to the rather sharply rounded apex. Elytral sculpture 

 and vestiture like that of the pronotimi. Legs wanting. Length, 

 from front of head to elytral apex, 13.10 mm. 



Type in the Museum of Princeton University, number 

 6534. 



The appearance of this insect is that of a Cistela with 

 estriate elytra and slender antennae. Compared with the North 

 American species known to me, it comes closest to C. pinguis 

 from Colorado, It is about the size of the fossil Capnochroa 

 senilis, but that insect has striatopunctate elytra. 



Capnochroa Lee. 



C. senilis n. sp. (Plate II, Fig. 5). Form elongate, subparallel 

 as far as shown, but the el^^tral apices are broken off. Head rather 

 large for this genus, transversely finely subrugose. Eyes, as displayed, 

 transversely elliptical and of good size. Palpus (probably the maxil- 

 lary) with the terminal joint roughly triangular, moderately dilated. 

 Antenna relatively less elongate than in the recent C. fuliginosa, not 

 serrate, second joint shorter than the third, which is not so long as the 

 fourth. Prothorax narrowed anteriorly, the more perfect side about 

 straight, anterior coxee narrowly separated by the presternum. Scu- 

 tellum of moderate size. Elytra long, if complete they would be about 

 six and one-half times the median prothoracic length, rather coarsely 

 striate and punctate. Legs moderate or rather short, not excessively 

 slender, the tarsi, as far as shown, a little shorter than the tibise, claws 

 large, the front ones apparently pectinate. Length of fragment, 12.40 

 mm. ; if entire, the insect would reach about 14.00 mm. 



Type in the Museum of Princeton University, number 

 6902. 



While the generic reference must be considered somewhat 

 doubtful, it seems safe to assume that the fossil represents 

 a large Cistelid belonging in the same neighborhood as Cap- 

 nochroa. The texture is very like that of the Cistelidae, the 



