6 FLORIDA GEOLOGICAL SURVEY-TWELFTH ANNUAL REPORT 
researches indicate that insect evolution has been extremely slow, 
so that many species, even as old as the Tertiaries, are rather dif¬ 
ficult to discriminate from their modern allies, no more marked 
divergence would be anticipated. 
Besides a few small fragments that could not be determined, 
the following species are contained in the collections: 
FAMILY CARABID^E 
Diplochild laticollis Lee. Represented by a left elytron, com¬ 
plete except that the apex is slightly twisted and broken. In some 
lights the discal striae are barely visibly punctate. There are no 
characters to differentiate this from a recent Iowa specimen. The 
species still occurs in Florida. Found in stratum 3. 
Diplochila major Lee. Approximately the basal half of a right 
elytron is present. It shows no particular deviation from modern 
examples taken in Iowa, Indiana and Louisiana. Still occurs in 
Florida. Found in stratum 3. 
Chlaenius aestivus Say. A right elytron is before me, lacking a 
small part of the scutellar region and all of the tip. Part of the 
pubescence is still preserved near the side. Compared with recent 
specimens from Lake City, Florida, the fossil is darker, perhaps 
from discoloration, and the interstitial punctuation is a little more 
scabrous or mucronate. It is still a rather abundant Florida insect. 
Found in stratum 3. 
Chlaenius tricolor Dej. A left elytron, lacking the tip, seems 
to go here very well. An abundant insect in the eastern United 
States, including Florida. From stratum 3. 
Chlaenius sp. A pronotum, simply labelled Vero, Florida, is 
different in some respects from any modern Chlaenius known to 
me. It may, however, belong to one of the southern species with 
which I am unacquainted. 
Codes amdroid.es Dej. An entire elytron, labelled like the pre¬ 
ceding, is apparently just like a modern specimen from Indiana. 
It still occurs in Florida. 
FAMILY SCARABCEIDCE 
Copris inemarginatus Blatchley. Represented by somewhat 
more than the basal half of a left elytron and a smaller curled frag¬ 
ment, taken from stratum 2, north bank, 370 feet west of the 
