I40 



THE CHAIN OF LIFE. 



Middle Devonian of New Brunswick (Fig. 123). Tlie beds con- 

 taining them hold also a species of Eurypterus, an obscure Trilo- 

 bite, and a Crustacean allied to the modern Stomapods,i besides 

 a shell which may possibly be that of a Land-snail, to be men- 

 tioned in the sequel. They are also exceedingly rich in beau- 

 tifully-preserved remains of Devonian plants. The collection 

 made by Prof. Hartt is limited to a few fragments of wings ; 

 but these, in the skilful hands of Mr. Scudder, have proved to 





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itSiit^-^ 



_U~^ '~T~i r--^- 



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^X^ 



Fig. 123.— Wings of Devonian Insects, Middle Devonian of New Brunswick. 



a, Platephemera nniiqua (Scudder). b, Hontothetus fossilis (Scudder). c, Lithen- 

 tomum Harttii (Scudder). d, Xenoneura antiguorum (Scudder). 



be rich in geological interest. One is a gigantic Ephemera or 

 May-fly, which must have been five inches in the expanse of 

 the wings, which are more complex in their venation than 

 those of its modern allies (Fig. 123, a). Another presents 

 peculiarities between those of the May-flies and Dragon-flies 

 (Fig. 123, b). A third is a Neuropter, not belonging to any 

 known family, but allied to some in the Coal- formation (Fig. 

 123, c). A fourth has the remarkable peculiarity of showing 

 traces of a musical or stridulating apparatus, similar to that 



1 Arnphipeltis paradoxus of Salter. 



