TRANSACTIONS OF WAGNER 



probably identical with a form subsequently named Pccten tennis by H. C. Lea 

 [Trans. Am. Phil. Soc, 2d sen, ix., p. 246, pi. 35, fig- 33, 1846], but which is 

 not Pecten virginiaims Conrad, as supposed by Heilprin [Proc. Acad. Nat. 

 Sci. Phila. for 1881, p. 420]. Professor Wagner's name for this Pecten will, 

 therefore, be retained. Specimens are in the Academy's collection. 



The species is most nearly related to P. islandiais of Miiller. Like the 

 other species of this paper it is of Miocene age. Panopea goldfussii is a 

 good and well-recognized species. Venus inoceriformis is now referred to the 

 genus Clementia Gray. Mysia micleifoj-mis is undoubtedly a Diflodonta, but, 

 in the absence of the type specimens, it will be difficult to discriminate the 

 species. Trochus (now Calliostoind) cboreits is a well-recognized species. Its 

 synonymy has been discussed in the Transactions of the Wagner Free Insti- 

 tute of Science, volume iii., page 398. 



About the year 1839, Professor Wagner had prepared three plates illus- 

 trating other fossils supposed to be new and contained in his collection. 

 These were lithographs of a very good quality for the time, and the printed 

 sheets have for the most part remained in the Institute ever since. No text 

 appears to have been printed, yet certain copies with manuscript names 

 attached to them were evidently circulated, as the names have entered into 

 the literature. For this reason it was deemed best to issue the edition with 

 explanatory references, especially since several of the species are perfectly 

 good and have not been described or figured elsewhere, notwithstanding the 

 lapse of half a century. 



In the Handbuch einer Geschichte der Natur von H. G. Bronn (Dritter 

 Band, iste und 2te Abtheilung) is included an Index Palaeontologicus com- 

 piled with the assistance of Professors Goppert and von Meyer. This is a 

 classical work, known to and used by every paleontologist, indispensable to 

 every library of reference. The first part, or Nomenclator, alphabetically 

 arranged, was printed at Stuttgart in 1848. In 1849 the Enumerator, or 

 systematic arrangement of the material, with discussions on the development 

 of organic life, was also issued. That the editor or compilers of this work 

 were acquainted with the plates of Professor Wagner is certain, as under their 

 list of abbreviations (p. Ixxx.) appears " Wagn. Wm. Wagner in Philadelphia 

 (Konch.)," and throughout the volumes are scattered references to the various 

 species figured on the plates in question, though with no reference to any text. 

 In the following references the titles of Bronn's volumes will be abbreviated 

 as "Bronn, 1848," and "Bronn, 1849," respectively. 



