N. A. INVERTEBRATE PALiEONTOLOGY. 747 



Seely, H. M. — A new Genus of Chazy Sponji^es, Strepliochetus. Amcr. 

 Jour. ScL, 3(1 ser., vol. xxx, pp. 355-357, figs. 1-3 on p. 356. Novem- 

 ber, 1885. New Haven. 



Describes the new genus Strephochehis* of which IS. oscellatus is de- 

 scribed as the type. It occurs in connection with well recognized Chazy 

 forms, and especially with Maclurea magna. It is found in place in the 

 town of Addison, Bridport, &c., in Addison County, Vermont. 



Smith, E. A. — Remarks on a Paper of Dr. Otto Meyer on " Species in 

 the Southern Old Tertiary." Amer. Jour. Sci., 3d ser., vol. xxx, pp. 

 270-275. October, 1885. New Haven. 

 Criticises Dr. Otto Meyer's views, corrects his quotations of Sir 



Charles Lyell, and oflers two kiiids of evidence of the superposition of 



the white limestone above the Claiborne sands, (a) evidence from direct 



superposition, (b) from geographical position. 



Steinmann, Gustav. — A. H. Ford : On Three new Species of Monticu- 

 liporoid Corals. Ann. and Mag. Nat. Hist., ser. 5, vol. xiii, pp. 338-342, 

 and xu, 1884. Neu. Jalirh. fur Min. Geol. & Pal, 1885, Band ii, p. 

 205. Stuttgart. (Abstract.) 



IJHLia V. — A. Hyatt : Fossil Cephalopoda in the Museum of Compara- 

 tive Zoology. Proceedings of the American Association for the Ad- 

 vancement of Science, vol. xxxii, August, 1883. 8vo. Ncii. Jahrh. 

 fur Min. Geol. t& Pal, 1885, Band i, pp. 324-329. Stuttgart. (Ab- 

 tract.) 



Wachsmuth, C, and Barris, W. H.— Descriptions of new Crinoids 

 and Blastoids from the Hamilton Group of Iowa and Michigan, pp. 

 1-2!), pis. i, ii, figs. 1-3 on pp. 9 and 13. 



This is a collection of several articles. The first is taken from the 

 Proceedings Davenport Academy of Natural Sciences, vol. iv, p. 7C, as 

 are also the two plates, and probably the articles also ; but I have no 

 means at present of ascertaining that fact. The various articles are as 

 follows : 



(1) On a new Genus and Species of Blastoids, with Observations 

 upon the Structure of the Basal Plates in Codaster and Pentremites. 

 By Charles Wachsmuth. [This article, which appeared in the Geolog- 

 ical Report of Illinois, vol. vii, p. 346, has been revised by the author.] 



(2) Descriptions of some new Blastoids from the Hamilton Group. 

 By W. H. Barris. [This article also appeared in the Geological Report 

 of Illinois, vol Vii, p. 357.] 



(3) Description of a new Crinoid from the Hamilton Group of Michi- 

 gan. By Charles Wachsmuth. Describes Megistocrinus eoncavus as a 

 new species. 



(4) Descriptions of some new Crinoids from the Hamilton Group. 



'arp'F(f)u, I twine; hxrrbc:, canal. 



