shorter species of Tritoma in form and sculpture but differs from 

 them in having a narrower and carinate prosternum. Likely 

 enough generic differences existed but none are available for 

 use. The underside of the fossil shows the elytral striation, 

 which has set through, much better than the upper. In the 

 figure, I have merely indicated the courses of the striae by means 

 of dotted lines and have not attempted to show the relations of 

 the separate punctures. 



CRYPTOPHAGUS PETEICOLA sp. nov. 

 (Plate I, figs. 1, 2). 



Form elongate, subparallel. Head nearly twice as broad as long, strongly 

 punctured, rather coarsely and closely upon the vertex, more finely and 

 sparsely upon the front, anterior margin prominent at middle. Eyes of 

 moderate size, coarsely granulate. Antennae with very large first joint, 

 the second considerably smaller, third and fifth each nearly as long as 

 the second but narrower, fourth, sixth, seventh and eighth shorter, ninth to 

 eleventh forming a pronounced and rather broad club. Prothorax nearly 

 twice as wide as long, punctuation about as coarse as that of the head, 

 scattered on the disk, closer at the sides, the latter gently rounding and 

 apparently not toothed. Elytra fully three times the prothoracic length, 

 sides subparallel, punctuation about equal in size to that of the prothorax, 

 not arranged in regular striae but showing some signs of serial arrangement. 

 Beneath, head and prothorax rather coarsely and closely punctured, meta- 

 thorax less so, abdominal segments nearly smooth. Length, 2.65 mm. 



Described from one specimen, with which are associated two others. 



Compared with the other Florissant fossil species, this is in- 

 termediate in size between C. hassleri and C. scudderi and differs 

 from both in the antennal structure which is quite typical of 

 recent species in the enlarged first and second joints. 



MIOPHENOLIA gen. nov. 



Form not very unlike that of Phenolia, mentum and mandibles, as far 

 can be seen, of the same type. Elytra nearly, if not quite, covering the 

 pygidium. Legs stouter than in Phenolia, the middle tibiae rather strongly 

 curved on the posterior margin which has a submarginal row of close, mod- 

 erately long spines or stiff hairs. Elytral sculpture coarse, punctatostriate. 



Type. M. cilipes sp. nov. 



MIOPHENOLIA CILIPES sp. nov. 

 (Plate I, fig. 3). 



Form, as preserved, a little more elongate and less parallel than in the 

 recent Phenolia grossa. The specimen is exposed so as to show the underside 

 and most of the characteristic sculptural features are therefore obscured. 



7 



