NATURAL SCIENCES OF PHILADELPHIA. 417 



"Descriptions of several new species of Plants, by S. B. Buckley. - ' 

 " Descriptions of new species of Tertiary and Cretaceous Fossil* 

 William M. Gabb." 



And were referred to Committees- 



October SQth. 



Mr. Lea, President, in the Cbair. 



Thirty seven members present. 



The Committee on the paper of Mr. Wrn. M. Gabb, " Descriptions 

 of new species of Tertiary and Cretaceous Fossils," reported in favor 

 of its publication in the Journal of the Academy. 



On report of the respective Committees, the following papers were 

 ordered to be published in the Proceedings : 



Systematic Catalogue, with Synonyma, &c, of Jurassic, Cretaceous and 

 Tertiary Fossils collected in Nebraska, by the Exploring Expeditions under 

 the command of Lieut. G. K. Warren, of U. S. Topographical Engineers. 



BY F. B. MEEK AND F. V. HAYDEN. 



Of the 276 species and varieties enumerated in the following catalogue, 25 ai 

 from Jurassic rocks, 194 from Cretaceous, and the remaining 57 from Tertiary 

 strata. None of the Jurassic species are known to occur in this country east 

 of the Black Hills, or south of the middle of eastern Utah, though some of 

 them will probably be found in New Mexico. One species is believed to be 

 identical with Ostrea calceola of Roemer from the Jurassic rocks of Germany, 

 and another {Ammonites cordiformis) is probably not distinct from A. cord< 

 Sowerby, which occurs in the Jurassic series of England, France, Russia, &c. 

 Nearly all the other Jurassic species mentioned in the list are closely allied 

 to forms common in the lower part of that system (the Lower Oolite aud 

 Lias) in the old world, and several of them may prove identical on farther com- 

 parison. 



Of the 194 Cretaceous species the following seven are common to the 

 Nebraska and New Jersey beds viz. Nautilus Dekayi, Ammonites placenta, 

 A. complexus*, A. lobatus*, Scaphites Conradi, Baculites ovatus, and Gryphon 

 oesicidaris ? ; and the following five species are probably common to Nebraska 

 and foreign localities, viz. Nautilus Dekayi, Inoceramus problematicus, Gry- 

 phcea vesicularis, Cuculloza fibrosa, and Micorbacia coranula. 



The 57 Tertiary species are believed to be all distinct from foreign forms, and 

 none of them have yet been found in this country east of Nebraska, or south 

 of north eastern Utah. They are all, so far as known, extinct species. 



JURASSIC SPECIES. 



CEPHALOPODA. 



BELEMN1TIDJ3. 



1. Belemnites dens us, Meek & Harden, March 1858, Pr. Acad. Nat. 

 Phila. 58. 



* We are indebted to Mr. Wm. M. Gabb, of Philada. for information in regard t 

 occurence of these two species in New Jersey. 



I860.] 



