30 MUSEUM OF COMPARATIVE ZOOLOGY. [May, 



from the green sand of New Jersey ; by teeth of lguanodon 

 Mantelli, H. v. Meyer, from the Wealden formation of Eng- 

 land ; by Teleosaurus bollensis QGavial de Boll) y C\iv. ; by two 

 Gavial jaws, one of them from the Kimmeridge clay of Hon- 

 fleur, France ; and by some remains of Mosasaurus, Cony- 

 beare, besides a good cast of Mosasaurus Hoffmanni, Man tell, 

 from the cretaceous formation of the " Petersberg," near 

 Mastricht (Holland). 



The order Pterosauria, Owen, is represented by a good cast 

 of Pterodactylus crassirostris, Goldf. 



The Enaliosaurian order is represented by several well-pre- 

 served species of Ichthyosaurus, Koenig, namely : Ichthyosau- 

 rus communis, de la Beche and Conyb., from England and Wiir- 

 temberg ; Ichthyosaurus tenuirostris, de la Beche and Conyb., 

 from England and Wiirtemberg ; Ichthyosaurus aculirostris, 

 Owen, from England and Wiirtemberg ; Ichthyosaurus integer, 

 Bronn, from Boll, Wiirtemberg ; Ichthyosaurus Cuvieri, Veil., 

 from Cap la Heve, Havre ; Ichthyosaurus quadricissus, Cuv., 

 from Holzmaden, Wiirtemberg ; further by Plesiosaurus doli- 

 chodeirus, Conyb. ; Plesiosaurus macrocephalus, Conyb. ; Ples- 

 iosaurus neocomiensis, Campiche ; and by several remains of 

 Notliosaurus, Miinster (syn. Dracosaurus Miinster), from the 

 triasique sediments of Gailsdorf, Wiirtemberg. 



The order Labyrinthodontes is well represented by several 

 remains of Mastodons aur us Jaegeri, Alberti (syn. Salaman- 

 droides giganteus, Jaeger), from the " Lettenkohle' , (lower red 

 marls) of Wiirtemberg ; further by several well-preserved 

 skulls of Archegosaurus Dechenii, Goldfuss, and of Archego- 

 saurus minor, Goldf., from Lebach, near Saarbriick, Prussia. 



The Batracian order is represented by three specimens of 

 Rana from the lignite formation near Bonn, Prussia. One of 

 them represents the Palceobatrachus GoldJ ussii, Tschudi 

 (syn. Piana diluviana, Goldfuss). 



(4.) The collection of fossil Fishes is large in specimens as 

 well as in species, and good in their preservation. 



(a) The Devonian system is represented by a large number 

 of Acanthodes pusillus, Ag. ; of Cheir acanthus microlepidotus, 

 Ag. ; of Osteolepis major, Ag. ; of Diplopterus macrocephalus, 

 Ag. ; by several remains of Coccosteus, Ag. ; of Pterichthys, 



