32 MUSEUM OF COMPARATIVE ZOOLOGY. [May, 



dius arenatus, Ag., from the lias of Lyme-Regis; of Telra- 

 gonolepis, Ag., from Lyme-Regis and from Boll ; of Lepidotus, 

 Ag., from the lias and from the Purbeck limestone of England ; 

 of Pholidophorus, Ag., from Lyme-Regis and from Solenhofen ; 

 of Ptycholepis bolltnsis, Ag., from Boll, Wiirtemberg ; of 

 Pachycormus, Ag., from Boll ; of Ophiopsis procerus, Ag., 

 from Solenhofen ; of Notagogus Zietenii, Ag., from Solenhofen ; 

 of Calurus pachyurus, Ag., from Solenhofen ; of Sauropsis la- 

 tus, Ag , from Boll; of Thrissops, Ag., from Kelheim and 

 Solenhofen ; of Leptolepis, Ag., from Lyme-Regis, Boll, Solen- 

 hofen and Kelheim ; of Aspidorhynchus, Ag., from Solenhofen, 

 Kelheim ; of Belonostomus Kochii, Miinster, from Cirin, 

 France ; of Megalurus, Ag., from Kelheim, Solenhofen ; of 

 Macro semius rostratus, Ag., from Solenhofen ; of Pycnodus 

 rhombus, Ag., from Torre d'Orlando, near Neapel ; of Pycnodus 

 gigas, Ag., from the Kimmeridge clay of Switzerland ; of Mi- 

 crodon radiatus, Ag., from the Purbeck limestone of England ; 

 of Cololithes, from Solenhofen. 



Besides we have many teeth of the genera Hybodus, Ag , 

 Acrodus, Ag., and Strophodus, Ag. 



(f) The Cretaceous period is represented by specimens of 

 Beryx ornatus, Ag., Beryx radians, Ag., and Beryx micro- 

 ccphalus, Ag., from Sussex, England ; by several species from 

 Sendenhorst, near Miinster, Westphalia, namely : Platycormus 

 germanus, v. d. Mark (syn. Beryx germanus, Ag.) ; Istieus 

 ■mesospandylus, v. d. Mark ; Sphenocephaly fissicaudus, Ag. ; 

 Sardinius Cordieri, v. d. Mark (syn. Osmerus Cordieri, Ag.) ; 

 Sardinoides Monasterii, v. d. Mark (syn. Osmeroides Monast- 

 mi, Ag.) ; Sardinoides microcepha!us,Y. d. Mark (syn. Osme- 

 roides microcephalus, Ag.) ; Leptosomus guestphalicus, v. d. 

 Mark ; further by RJiacoJepis buccalis, Ag., from Pernambuco, 

 Brazil ; Rhacolepis Olfersii, Ag., from Ceara, Brazil ; by a large 

 number of fish-remains from the " terrain cenomanien " of the 

 upper cretaceous formation from Mount Lebanon and Beirut, 

 Syria ; and by teeth of the genera Cor ax, Ag. ; Plychodus, 

 Ag. ; and Otodus, Ag. 



(g) The Tertiary period is represented by a very large se- 

 ries of well-preserved fishes from the Nummulitique formation 

 of Monte Bolca, near Yicenza. We find among them rep- 

 resentatives of the families Pycnodontes, Sclerodermes, Per- 



