172 I Jiii"'arj', 



strata of this age was discovered in the coal measures of Saarbriiclj ; 

 it has been described by Dr. Goldenberg under the name of Troxites 

 Germari. 



America. 



The fossil insects obtained from the American Carboniferous 

 rocks all belong to the Orthoptera* and Neu7'optera.-\ The first 

 named Order includes Mylacris anilirncophilum, six species of cock- 

 roaches, i.e., five Blattidce {Blattina vejmsta, B. Heeri, B. brefonensis, 

 B. sepulta, and B.fascigera), and one species referred to a new genus 

 — Archimylacris ; a cricket — Archegogryllus priscus ; and a supposed 

 species of Mantis. 



The N'europteraX comprise thirteen species belonging to the 

 genera — Miamia,^ Hemeristia, Termes, Crestotes, MegatJientomum, 

 Euep'hemerites,\\ LiheUula ?, Saplophlehium, and Paolia. From the 

 neuration of the wings of the species belonging respectively to the 

 genera Miainia*^ and Hemeristia, Mr. Scudder is of opinion that they 

 each represented a new family of Neuroptera, containing peculiarities 

 both of Neuroptera proper and Bseudo-Neuroptera. The species be- 

 longing to the genus Termes {T. cofitusus**) is especially interesting 

 as being, I believe, the only fossil specimen of a white ant discovered 

 in America. Amongst the remains, referred by Scudder to his genus 

 Euephemerites, is " the well-definedft wing of an insect of marked 

 " simplicity." It has been named E. primordiaJis by Scudder, who 

 states that, in this ancient wing, scarcely the slightest differentiation 

 has begun. In this respect, therefore, this wing differs from all others 

 yet discovered ; for even in those obtained from the Devonian rocks, 

 the differentiation of the wings is scarcely less perfect than in living 

 insects. 



The fossil referred to the genus Lihelhila, is supposed to be the 

 abdomen of a larval dragon-fly ; but it appears to be so imperfect and 

 fragmentary, that it is impossible to say to what insect it belonged. It 

 is extremely improbable that this fossil should have belonged to the 

 Odonata, which, although abundantly represented in the Jurassic rocks 

 of Solenhofen, and also — though less commonly — in the English Lias, 

 are unknown in rocks of greater antiquity. 



* Owen's 2nd rejj. Geol., Arkansas, p. 314 ; Geol. Mag., vol. v, 1868 ; Canadian Xat., vol. vii 

 (n. s.) ; Proc. Amer. Assoc, &c, , vol. xxiv ; Acadian Geol., antea cit., p. 388 ; Proc. Boat. Soc. Nat. 

 Hist., vols, xi and xix ; and Geol. HI., vol. iii, p. 567. 



t One of these — ■ Haplophlebium Barnesi — is placed by Goldenberg in the extinct order 

 Palceodiclyoptera 



t See Geol. Mag., vol. iii (new series), November, 1876, p 519. 



§ Silliman's Jour. {2i, vol. xxxvii, p. 34 ; Geol. Illinois, vol iii ; Proc. Amer. Assoc, &o. 



II Euephemerites simplex. E. gigas, E. ajhnis, and E. primordialis. 



II Two species, viz., Miamia Bronxoni and M. Dance. 



** Proc. Host. Soc. Nat Hist., vol. xix, 1878, p. 54. 



ft Proc. last quoted, \). 37. 



