18!)2.] 221 [Cope. 



Fig. 40. Lacerta ocellata Daud. ; uat. size. 



41. Tnpinambis tegnexin Daud.; nat. size ; from Cuvier. 



42. C/ie/iiidophorus tessellatus Say ; x 3. 



43. Anniella pulchra Gray ; X 4 ; from si»ecimeu from James S. Lip- 



pi ncott. 



44. Chirotes canaliculat (IS Bonn.; x 4. 



45. Amphisbcena alba Linn. ; f nat. size, 

 4(i. Rhineura floridana Baird ; X 4- 



Lettering. — Gh., glossoliyal ; Bh., basiliyal ; Hh., hypohyal ; Ch., cera- 

 toliyal ; CB. I, first ceratobranciual ; CB. II, second ceratobrancliial ; 

 EB., epibranchial ; 8t., stapes; E.St ^ epistapedial ; S.St., suprastapedial. 



ERRATA. 



Page 211, liue 16, for 41 read 37. 



Page 211, line 27, for Plate v, Fig. 26, read Plate vi, Fig. 38 



Page 216, lines 2')-:iO. Tliis description of the pelvis of Anniella is erroneous. I 

 describe it in a paper in press in the American Journal of Morphology, and not having 

 the ]MS. with me when the present papsr was written, trusted to memory, and confused 

 it with the pelvis of Feylinia. 



On Some New and Little Known Paleozoic Vertebrates. 



By E. D. Cope. 



{Read before the American Philosophical Society, April 1, 1S92.) 



It has been long known that the Catskill-Chemung beds of Northern 

 Pennsylvania contain a fish bed rich in specimens. This deposit has been 

 traced from Warren, on the west, to Susquehanna county, inclusive, on the 

 east. It is now known that at the close of the Chemung epoch, as at the 

 close of the Devonian in Belgium and Scotland, land emergences took 

 place, producing more or less continued brackish and fresh-water condi- 

 tions. The latter received the deposits known as the Catskill in the East- 

 ern United States, and their alternations with Chemung beds containing 

 Chemung invertebrate fossils are now well established as facts of our 

 geological history. A recent visit to Tioga and Bradford counties, in 

 Pennsylvania, has recently afforded me the opportunity of inspecting 

 some of the localities where vertebrate fossils occur. These have been 

 already referred to by Prof. J. S. Newberry in his work on tlie Paleozoic 

 fishes of North America. Guided by two geologists residing in the regions 

 in question — Mr. Andrew Sherwin, of Mansfield, Tioga county, and Mr. 

 A. T. Lilley, of Leroy, Bradford county — I had an excellent opportunity 

 of observing the mode of occurrence of the fossils and of obtaining speci- 

 mens. I wish here to e.xpress my particular indebtedness to these gentle- 

 men for the aid they have rendered me. 



The locality I visited, near Mansfield, is typical Catskill. The list of 

 species obtained is not large. They are : 



Bothriolepis nitidus Leidy. Holonema ncgosum Clayp. Ganorhynchus 



