244 EECORD OF SCIENCE FOR 1886. 



Davies, W. Note Oil Prof. E. D. Cope's article upon Edestus and Pe- 

 lecopterus, etc. (Geol. Mag., new ser., Decade in, vol. in, pp. 141, 

 142, March, 188G. London.) 



"Professor Cope is, I think, mistaken iu assigning Xiphias Dixoni to Agassiz. 

 The name iirst appears iu a paper by Dr. Leidy " " On Saurocephalus and 

 its Allies," in the Trans. Amer. Philos. Soc., vol. xi, p. 91, where the name 

 was given to the prolonged ethmoid bono referred by Sir Philip Egerton 

 to Saiirocephalus lanciformis, as then understood. 

 In that paper Dr. Leidy proves that the teeth assigned by Agassiz to Ihe Sauro- 

 ce^^halus of Harlan, had no relation to that genus, aud he refers the jaws 

 and teeth from the English chalk to a new genus under the name of Pro- 

 tosplvjnena, Leidy. The "rostral" bones described by Sir Philip Egerton, 

 he contended, did not belong to Prolospltyrmia, but to a species oi Xiphias, 

 to which he gave the trivial name of A'. Dixoni. Subsequently Professor 

 Cope described his genus Erislchtlie, which certainly embodies both of 

 Leidy'3 species. I may mention here that the prolonged ethmoids are 

 found in our Chalk, Upper Greensaud, and Gault; and here also are fouud 

 (and in no other deposit) the peculiar fin-rays referred to rtychodus by 

 Agassiz. From this association the inference is natural that the ethmoids 

 and fins belong to the same species of fi.sh, viz, the rroloi<j)hyrana of Leidy, 

 ErUichthe Cope. (See Paper by W. Davies, F. G. S., on Saurocrphalus lan- 

 ciformis of the British Crustaceous Deposits, with description of a now spe- 

 cies. (Geol. Mag., 1878, Decade ii, vol. v, \k 2.j4, pi. viii.) 



Davies, W. M. Brief notices of the papers read before the Geological 

 Section of the American Association: Tnlly Limestone, by S. G. 

 Williams; Mollusca of the New Jersey jMarls, by K. P. Whitfield; 

 New York Devonian Geology, by H. S. Williams; Cambrian in New 

 York, by C. D. Walcott; Cretaceous Elora, Devonian and Carbonif- 

 erous, Fishes, by J. S. jSTewberry (Amer. Jour. Sci., ."nl ser., vol. xxxii, 

 pp. 310-32], October, 1S8G. New Haven.) 



Dawson, J. W., Sir. Cretaceous Floras of the Northwest. Canad. 

 Eec. Sci., vol. ii, No. 1, pp. 1-9, 18SG. Montreal. 



A summary of the article in the Transactions of the Royal Society of Canada. 



Dawson, J. W., Sir. Cretaceous of Northwestern Canada. (Caiiad. 

 Eec. Sci.; Amer. Jour. Sci., 3d ser., vol.xxxi, p. 155, February, 18SG. 

 New Haven.) 



Notice of. 



Dawson, J. W., Sir. The Fossil Flora of the western Northwest Terri- 

 tory of Canada. (Amer. Nat., vol. xx, pp. 157, 158, February, 188G. 

 New Haven.) 



Brief resumd of papers noticed last year. 



Dawson, J. W., Sir. On the Fossil Flora of the Laramie Series of West- 

 ern Canada. (Amer. Nat., vol, xx, pp. G35-G37, July, 188G. Phila- 

 delphia.) 



Abstract of a paper read before the Royal Society of Canada, May, 1S8(), by Sir 

 J. W. Dawson, LL.D., F. R. S. 



Dawson, J. W., Sir. On the Fossil Flora of the Laramie Series of 

 Western Canada. Abstract of a paper read to Royal Society of 

 Canada, May, 18S3. (Amer. Jour. Sci., 3d ser., vol. xxxii, pp. 242, 

 243, September, 18S5. New Haven.) 



