78 



11. Catalogue of the Coleoptera from the Region of 



Lake Pontchartrain, La. 



BY S. V. SUMMERS, M. D., NEW ORLEANS, LA. 

 [Read before this Society, April 10, 1874.] 



The following list will enumerate all the known Coleoptera 

 occurring within the limits of what maybe known as the " Region 

 of Lake Pontchartrain, Louisiana"; the list has been compiled 

 from personal examinations of species in the possession of Mr. C. 

 Trabrandt and in my own collection. I must also express here my 

 obligations to Dr. Geo. H. Horn for determining many of the enu- 

 merated species. The classification of Dr. Le Conte with a few 

 late modifications, has been followed. Many of the Louisiana 

 species are among the rarest of the Coleoptera, i. e., Casnonia lu- 

 doviciana, Zuphium americanum, Gymnetis Sallei, etc., and there 

 still remains a large field for collections among the Dytiscidae and 

 Staphylinidae. I would suggest for the latter family water, as the 

 medium to be used in collecting, in bailing over the margin of 

 streams; or, if fungi and animal excrement are to be searched, a 

 pail two-thirds filled with water, will be found a valuable assistant. 



CICINDELIDAE. 



Megacephalini. 



Tetracha Carolina (Linn.). 

 virginica {Linn.). 



Cciiidelini. 



CiciudeU rugifrons Dej. 

 tranquebarica Hb. 

 repanda Dej. 



Cicindela media Lee. {v.). 

 marginata Fah. 

 tortuosa Dej. 

 V. serpens Lee. 

 punctulata Fab. 

 V. micans Fab. 

 severa Laf. 

 Pilatei [Guerin). 



