OF ENGLAND AND BAVARIA. D 



In the Rhenish peat the circumstance is interesting that we 

 find in it pupa skins and larvse ; as is well known the 

 Lihellulce make their appearance above the water in which 

 the larvES reside. 



The absence of larvse in the Solenhofen strata admits, 

 however, of easy explanation if we suppose that the waters, 

 on whose shores the Solenhofen strata were deposited, were 

 salt. Just as at the present day numerous Odonala are 

 buried in the sand on the shores of the Baltic, although their 

 larvae do not live in that sea. The deposits of CEningen and 

 Radoboj we must on the other hand conclude were made in 

 fresh water. 



The comparative richness of a collection which, like that at 

 Munich, has been made without any special predilection for 

 any particular class of animals, furnishes an approximatively 

 correct idea of the Fauna of such strata. 



Out of 450 insects (omitting the duplicate impressions) 

 150 are Newroptera in the Linnean sense, and out of these 

 136 are Odonata. Of those not Odonata six only (com- 

 prising four species) belong to the JSleuroptera as restricted 

 by Erichson, namely, one species of Corydalis, one Ckryaopa, 

 a large Apochrysa and a beautiful Nympltes. The last two 

 genera, which do not seem very remote from Chrysopa, are 

 now found only in the Southern Hemisphere. Nymphes is 

 peculiarly an Australian genus; the presence of this genus in 

 the Solenhofen Fauna is hence very interesting, and still more 

 so as a species of Nymphes occurs in the amber of Eastern 

 Prussia. 



All besides these six specimens mentioned belong to insects 

 which are nov/ usually referred to Orthoptera. If to these 

 we add the numerous Locustce and Blattce, nearly one-half 

 of all the insects will consist of Orthoptera. 



