\'ol. Xxixj EXTOMOLOGICAL NEWS 295 



the most expensive part of the campaign, as the maintenance 

 would be but sHght in comparison with the work accompHshed. 

 However, this work will probably never be undertaken in the 

 Canal Zone unless M. titillans is strongly incriminated in the 

 transmission of some disease injurious to man or domestic 

 animals. 



Throughout our observations we have diligently searched 

 for insects destructive to this plant, but up to the present time 

 we have found but one natural enemy. This is the larval 

 form of a small moth, Sanica niitltiplicalis Guen. These 

 small, worm-like larvae tunnel into, and feed upon, the foliage 

 leaves, destroying large numbers of them. However, the 

 plants multiply so rapidly that the destruction caused by these 

 larvae is seldom obvious. It is to be deplored that this de- 

 struction is not excessive enough to produce results in dimin- 

 ishing the number of M. titillatis in the Canal Zone. 



An Annotated List of Gainesville, Florida, Coleoptera. 



By H. L. DoziER. University of Florida. 



The following annotated list is the result of extensive col- 

 lecting at Gainesville, Florida, from January i, 1916, to June i, 

 191 7. Collections and obser\-ations were taken under all con- 

 ditions and during all seasons of the year. These were made 

 in the various ecological habitats, but the majority of the 

 Coleoptera listed here are hammock insects, as the writer was 

 conducting an ecological study of Florida hammock and piny- 

 woods insects during this period. 



The term '"hammocks" is applied in Florida to the dense 

 hardwood and cabbage-palmetto forests, as distinguished from 

 the open pine lands and cypress swamps. 



All specimens were collected by the writer unless otherwise 

 designated. A number of records of Prof. J. R. \\'atson. 

 Entomologist of the Florida Agricultural Experiment Station, 

 are included and credited to J. R. W. Specimens designated 

 Bio. Coll. are in the biological collection of the University of 

 Fbrida. 



