38 



group, and 4 (13.8%) of the 29 colonies in the second group 

 (collected two years later) were infected. These limited 

 data suggest that B. dimorpha may be quite common in specific 

 localities, but not homogeneously distributed in nature. 

 Unfortunately, surveys for disease are very expensive, time- 

 consuming, and laborious, and the prospects of amassing 

 data sufficient to draw conclusions about the distribution 

 and abundance of B. dimorpha in nature appear remote. The 

 S. geminata has now been almost completely displaced from 

 the type locality of B. dimorpha by S^. invicta . 



