80 SIR WILLIAM DAWSON ON 



Genus — Amphipeltis. 



6. Amphipeltis paradoxus, Salter. 

 [Published (as a crustacean) Journal Geol. Soc. of London, Feb., 1863 ; Acadian Geology, 2nd edition, p. 523.] 

 Devonian, Little River Group, St. John, N.B., collected by C. F. Hartt. 



7. Spider-like animal, allied to Anthracomartas. 

 [Communicated to Royal Society of Canada, 1893, but not yet published.] 

 Devonian, Little River Group, St. John, îf.B., collected by G. F. Matthew. 



Class— INSECT A. 



Order — PaLvEODICTYOPTEra. 

 Family — Palœoblattariœ. 



Genus — Archimylacris. 



8. Archimylacris Acadica, Scudder. 

 [Acadian Geology, 2nd edition, 388; American Naturalist, I., 639.] 

 Coal Formation, Pictou, N. Scotia, collected by J. Barnes. 



Genus — Mylacris. 



Mylacris Bretonoisis, Scudder. 

 [Can. Nat., VIT., 271 ; Acadian Geology, Supt., p. 55, (as Blattina) ; Mem. Bost. Soc. Nat. Hist., III.. 41.] 

 Coal Formation, Sydney, Cape Breton, collected by R. Brown. 



9. Mylacris Heeri, Scudder. 

 [Can. Nat., VII., p. 272 ; Acadian Geology, Supt. 55, (as Blattina) ; Mem. Bost. Soc. Nat. Hisl., III., 43.] 

 Coal Formation, Sydney, Cape Breton, collected by R. Brown. 



Genus — Petrablattina. 



10. Pet rablattina sepulfa, Scudder. 



[Proc. Am. Ass., Adv. Science, XXXIV., B. III.; Can. Naturalist, N. S., VIII., 89; Acadian Geology, Supt. 55, (as 

 Blattina) ; Proc Bost. Soc. Nat. Hist., III., 125.] 



Coal Formation, Sydney, Cape Breton, collected by J. AV. D. 



Order — Pal.eoneuropterida. 

 Family — Platephemeridce. 



Genus — Platephemera. 



11. Platephemera antiqua, Scudder. 

 [Devonian Insects of New Brunswick, 1865 ; Canadian Nat, N. S., III., 205 ; Acadian Geology, p. 524.] 

 Devonian, Fern Ledges, St. John, N.B., collected by J. "W. and C. F. Hartt. 



