107 



Massalongo, and referred by them to the same period. M. Marcell 

 de Serres alludes to the discovery at Monte Bolca, by Scheuchzer, 

 of some Neiiropterms insects of the genus Lihelhila. 



Scheuchzer's notice of these insects is also alluded to by Signor 

 Massalongo, -vvlio in 185G described and figured 7 fossil insects 

 from this locality referable to the following orders : — 



2 species. 



Coleopteni 

 Orthoptera 

 Neiiroptera 

 Diptera, 



Although so few insects have been found in these deposits 

 they have been for centuries celebrated for their fossils, especially 

 Ichthyolitcs. 



American Strata. 



Recent or Post Tertiary Period. 



I am indebted to IMr. E. M. Lachlan, F.R.S., for an extract 

 from a paper (in the oth vol. of the "Transactions of the 

 American Entomological Society ") by Dr. G. 11. Horn on certain 

 Coleopterous remains discovered in cave deposits (belonging to the 

 Port Pliocene period) at Port Kennedy, Pensylvania. From 

 these remains Dr. Horn has identified some 10 species of 

 Colcoptem. 



Tertiary Period. 



The earhest discoveries of fossil insect remains from the 

 American Tertiary formations appear to have been made several 

 years ago by Professor Denton in shales in Colorado, near the 

 junction of the Green and WMte Rivers. They are said to have 

 been found in two distinct localities sixty miles apart, the speci- 

 mens in one place differing from those of another, not only 

 specifically but in their general character. Subsequent investiga- 

 tions in other parts of the same region have since been made by 

 Mr. F. C. A. Richardson and also by Dr. Hayden. In a letter 

 to the Editors of the American Naturalist, Mr. Richardson says : 

 *' I discovered and collected the fossil insects on the Green River, 



