The Chondrostei and Holostei 



341 



Included then in the group of freshwater fishes thus pre- 

 served, are three species of Belonostomiis as noted below. 

 But included by Sauvage {24s : 3 1 ) from the "Calcaire bitu- 

 mineux d'Orbagnoux," of like deposit as the above, are two 

 species of Belonostomiis and one species of Aspidorhynchiis, 

 along with other freshwater types. And in order to bring 

 before the reader the assemblage of which these formed a 

 part, we now append the entire list of fishes from Bugey, 

 as presented in part II of the sumptuous "Thiolliere mem- 

 orial volume." This list also throws a welcome sidelight on 

 problems already studied, or on others dealt with in suc- 

 ceding pages. 



Selachei 



Raiadae 



Spathobatis bugesiacus 

 Belemnobatis sismond 



Pycnodontidae 



Pycnodus sauvanausi 

 Pycnodus bernardi 

 Pycnodus itieri 

 Pycnodus egertoni 

 Microdon elegans 

 Microdon hexagonus 

 Gyrodus macrophthalmus 

 Mesodon comosus 

 Mesodon gibbosus 



Leptoi.epidae 



Oligopleurus esocinus 

 Megalurus idanicus 

 Megalurus austeni 

 Megalurus polyspondylus 

 Megalurus damoni 

 Pleuropholis ? 

 Attakeopsis desori 

 Thrissops salmoneus 

 Thrissops formosus 

 Thrissops cephalus 

 Thrissops heckeli 

 Thrissops regleyi 



Squalidae 



Phorcynis catulina 



Ganoidei 



Disticholepis dumortieri 

 Callopterus agassizi 

 Notagogus inimontis 

 Notagogus margaritae 

 Lepidotus itieri 

 Lepidotus notopterus 

 Pholidophorus micronyx ? 

 Pholidophorus sp. 

 Caturus velifer 

 Caturus segusianus 

 Caturus furcatus 

 Caturus elongatus 

 Caturus latus 

 Amblysemius belHcianus 

 Ophiopsis guigardi 

 Ophiopsis macrodus 

 Ophiopsis attenuata 

 Eugnathus praelongus 

 Leptolepis sprattiformis 

 Belonostomus sphyraenoides 

 Belonostomus tenuirostris 

 Belonostomus miinsteri 



COELACANTHIDAE 



Undina striolata 

 Undina cerinensis 



The records for Aspidorhynchiis and Belonostomus from 

 other and more recent beds are still doubtful. But if re- 

 mains of the former from the Hughenden beds are "as- 

 sociated with ammonites and other fossils of cretaceous 



