CERAMBYCIDJ3 CHRYSOMELID^, 107 



slightly scabrous; the antennae are nearly smooth, the basal joint, mesially 

 carman- above, the last joint bluntly pointed. Prothorax subquadrate, a 

 little transverse, the extent of the lateral spines concealed, the surface rather 

 coarsely and pretty uniformly scabrous. Elytra coarsely granulate at the 

 base, the granulations becoming gradually fainter until they disappear, the 

 apical quarter being- free, although the surface is not uniform; outer and 

 inner edges minutely marginate. A fragment of one of the wings remains, 

 showing that the insect was nut apterous. 



Length of body, 22.5 mm.; of head, 2.5 mm.; of thorax, 4 mm.; of 

 abdomen, 16 mm.; of antenna?, 26.5 mm.; its first joint, 2.5 mm.; third, 

 4.5mm.; penultimate, 4 mm.; last, ,'{.25 mm.; breadth of first joint, 1.25 

 mm.; third, at base, 0.7 mm.; at tip, 0.9 mm.; of penultimate, at base, 0.5 

 mm.; at tip, 0.6 mm.; width of prothorax exclusive of spine, C mm.; width of 

 elytron, at base, 4.5 mm.; in middle, 4.25 mm.; at one millimeter from tip, 

 2.5 mm.; length of elytron, 14 mm. 



Florissant, Colorado; one specimen, No. 7807. 



Fifty-one species of this family have been found fossil, twenty-nine in 

 the older Tertiaries, twenty-two in the Pleistocene. The latter belong to 

 four genera only, and fourteen of the species are regarded as identical with 

 species now living. The older fossils represent nine genera, three of them 

 common to both continents; one of the genera, found in America, is regarded 

 as an extinct type. 



DONACIA Fabricius. 



A prevailing north temperate genus with numerous species in North 

 America. Many fossil species have been recorded, especially from the 

 Pleistocene, which in Europe has furnished three extinct species from Savoy, 

 Italy, and Gralicia, and thirteen existing species in numerous localities in 

 Italy, France, Switzerland, Holland, Bavaria, and other parts of Germany; 

 besides which there are three extinct species in America found in Canada 

 and Massachusetts. Five species have been found in the older Tertiaries of 

 Baden, Silesia, Alsatia, and Spitzbergen, and the genus has been recognized 

 in amber. 



