Correspondence — Mr. 8. H. Scudder. 519 



c o:E^:E^:B s IPO i^riDs i^TGiE . 



FOSSIL PALEOZOIC INSECTS.^ 



Sir, — In Mr. Henry Woodward's recent paper on a new and 

 remarkable Orthopterous Insect [Litho^nantis carhonariiis) from the 

 Coal-Measures of Scotland (Quart. Journ. Geol. Soc. Lond., 1876, 

 vol. xxxii. p. 60, pi. ix.), is given a list of known Palaeozoic fossil 

 forms, to which I would venture to make some slight additions. 

 Most remarkable to my mind is the constant discovery of close 

 relationship between the ancient forms of Insect-life in Europe and 

 America, which Mr. Woodward has been one of the most conspicuous 

 in pointing out. I shall add as another fact tending in the same 

 direction that my Megatlientomum and Goldenberg's Acridites are but 

 two closely allied species of one genus. 



Allow me to observe that Archimylacris is a Carboniferous, not a 

 Devonian type (see my paper, Geol. Mag. 1868, Yol. Y. p. 177), and 

 that my Jlylacris is not a Neuropterous, but an Orthopterous type. 

 Mr. Woodward cannot have seen Goldenberg's Fauna, SarcBjpontana 

 fossilis (1873), or its predecessor the Jahresbericht Gymn. zu Saar- 

 briicken (1867), in which a Blattina Tischbeinii is described. 



I venture to send what I believe to be a complete list of the Car- 

 boniferous Insects of America arranged by families. 

 List or Described American Insects from the Carboniferous Formation. 



ORTHOPTERA. 



1. Blattina venusta, Lesq., 2iid Rep. Geol. Ark., p. 314. 



2. „ Heeri, Scudd., Can. Nat. (n.s.), vol. vii., p. 272. 



3. „ bretonensis, Scudd., Can. Nat. (n.s.), vol. vii., p. 271. 



4. „ sepulta, Scudd., Proc. Am. Asso. Adv. Sc, vol. xxiv., p. 111. 



5. Mylacris anthracophilum , Scudd., Geol. 111., vol. iii., p. 568. 



6. Archimylacris acadiciim, Scudd., Daws. Acad. Geol., p. 388. 



7. ? Mantis sp. Scudd., Geol. 111., vol. iii., p. 567. 



8. Archegogryllus priscas, Scudd., Proc. Bost. Soc. Nat. Hist., vol. xi., p. 402. 



MEUROPTERA. 



9. Miamia Bronsoni, Dana, Sill. Journ. (2), vol. xxxvii., p. 34. 



10. ,, I)anm^ Scudd,, Geol. 111., vol. iii., p. 566. 



11. Hemeristia occiclentalis, Dana, Sill. Journ. (2), vol. xxxvii., p. 34. 



12. Creslotes lapidea, Scudd., Geol. 111., vol. iii., p. 567. 



13. Megathentoinum pustulatum, Scudd., Geol. 111., vol. iii., p. 570. 



14. Ephemerites simplex, Scudd., Geol. 111., vol. iii., p. 571. 



15. „ gigas, lb. p. 571. 



16. „ affinis, lb. p. 472. 



17. Libellula carbonaHa, Scudd., Proc. Am. Asso. Adv. Soc, vol. xxiv., p. IIC. 



18. Saplophlebium Barnesii, Scudd., Daws. Acad. Geol., p. 387. 



19. Paolia vetusta, Smith, Sill. Journ. (3). 



ARACHNIDA. 



20. Arthrolycosa antiqua, Harg., Sill. Journ. (3), vol. vii., p. 219. 



21. Architarbus rotundatus, Scudd., Geol. 111., vol. iii., p. 568. 



22. Eoscorpms carbonarius, Meek-Worth., Sill. Journ. (2), vol. xlv., p. 25. 



23. Mazonia TFbo^mwa, Meek-Worth., Geol. 111., vol. iii., p. 563. 



MYRIAPUDA. 



24. Xtjlobius sigillarice. Daws., Quart. Journ. Geol. Soc. Loud., vol. xvi., p. 268. 



25. ,, siinilis, Scudd., Mem. Bost. Soc. Nat. Hist., vol, ii., p. 233. 



26. „ fractus „ lb, p, 234. 



27. „ Dawsoni, ,, lb. p. 235. 



1 The publication of this letter has by accident been delayed, owing to the temporary 

 loss of the original.— Edit. Geol. Mag. 



