- ■*—— ■i*'r'»- 



240 



THB CANADIAN NATURALIST. 



[Vol. vii. 



The surface is covered w!u. tubercles of various sizes up to 2 

 lines in width in the largest specimens. The space between the 

 2 cones is nearly smooth. 



There are about a dozen specimens of the frontal lobe in the 

 «ollection, and they vary from a length of 9 lines up to 3 inches. 



Occurs in the Corniferous. 



OHANOES OP NOMENCLATURE. 



In 1860-1861, I described, in the Canadian Journal, u num- 

 ber of species Devonian fossils, which appeared to be new. 

 Durinj; the thiri on years that have elapsed, many changes have 

 taken place in palaeontologicul nomenclature, and s. veral of the 

 names then adopted must be changed. 



1. — Athi/ris Clara, also described by Prof. Hall under t.he 

 jiame of Merittella elissa. I am informed that this species has 

 been long understood to be Atrypa nasnta, Conrad, although it 

 was not recognized as such by Prof. Hall in 1860. If it ia 

 truly Conrad's species it should be called Athyris nasuta. 



2. — Rhynchondla ? Laura, published May, 18150, is the same 

 as Prof. Hall's Leiorhynchus mnlticosta of a later date. See Am. 

 Jour. Sci. 2d Ser. vol. 31, p. 293. Our species may be called 

 Leiorhynchus Laura. 



3. — Stricklandinia dongata, may be changed to Amphigenta 

 ^longata. ,, :( >, r, 



4. — Strophomena incpquistriuta is S. xnequxradlata, according 

 to Prof, Hall. 



4. — Favoaites bataltica. When Goldfuss published this species 

 he figured three specimens : 

 4a — From Lake Erie. 46 — from Gothland. 4c d- d — from Eifel. 



These represent, cither two, or three species. The specific 

 name can only be retuined for one of these species. The ques- 

 tion to be decided is "which of them '' ? 



Lonsdale and McCoy, have expressed the opinion, that the 

 specimen (c, d), from the Eifel, is F. Gothlandica. Prof. H. A. 

 Nicholson, says in reference to this opinion, that " it is probable." 

 —(Canadian Journal, 1873 ?) 



Supposing these three authors, to be correct in this view — then 

 (c, d) must be referred to F. Gothlandica, and the name, F. 

 hataltica, retained for either one or both of the others. 



The specimen figured by me as F. hataltica, is of the same 

 4spccies as 4a. 



Publiihed March 30th, 1874. 



