112 



Actinnpteryrjil — Plectospondyli. 



Table-case '^'^^ Scopelldfe and allied families are probably I'eprescnted 



No. 51. in the Upper Cretaceous by the fishes named Spaniodon, 



Enchodiis, and Eurijpholis (V'ig. 160), some of which from 



Table-case, 

 No. 51. 



\VD. iGO.—Earifpholls Bol 



i, Pict. (after Picfct and Humbert); Upper Cretaceous, Mount 

 LebaiKin. 



Westphalia (not in the Collection) exhibit distinct traces of an 

 adipose dorsal fin. They have very irregularly developed large 

 teeth within the mouth, and Enrypholis exhibits ornamented 

 dermal scutes both on the antei'ior part of the back and along* 

 the lateral line. GimoUchfhys and Pomognathus from the 

 Englisli Chalk also seem to be related to these fishes. Phylacfn- 

 rephalus from Mount Lebanon is probably identical with 

 Pomogi/afhits. 



Typical Scopelida3 are Parascopelus and Aiiap ferns from the 

 Upper Miocene of Licata, Sicily. 



The extinct Cretaceous family of Hoplopleuridfe follows 

 next, eompi-ising much-elongated fishes wanting- true scales 

 but armoui-ed with longitudinal series of scutes. Dercetis 

 (Leptotrachelus) occurs in the English Chalk, and still more 

 abundantly in the Upper Cretaceous of Mount Lebanon. 

 Pelargnrhyuclms is an allied fish from the Chalk of Westphalia. 



Wall-case, 

 No. 16, and 

 Table-cases, 

 Nos. 5S, 53. 



Sub-order V. — Plectospondyli. 



Remains of Cyprinida? are not uncoramoii in freshwater 

 formations above the Eocene both in Europe and North America, 

 but almost all the extinct species are referable to existing 

 genera. The true Carp (Cyprimis) and Gudgeon (Gobio) occur 

 in the Miocene of Oeningen. Species of Leuciscns (Roach, 

 Dace, Minnow, etc.) are represented in the same deposit, in the 

 lignites of France and Germany, and in the Ujoper Miocene 

 Infusorial Earth of Licata, Sicily. The latter formation also 

 yields remains of other genera, e.y. Ehodeus and Aspius ; and as 

 Herrings, Scopeloids, etc., occur abundantly in association with 

 these, the mingling* of marine and freshwater fishes is here 

 very remarkable. The Tench {Tinea) is found in the Oeningen 

 beds and Tertiary lignites ; and the little Acantlwpsis, now 

 of Tropical India, is met with in the Miocene of the 

 Puy-de-D6me, France. Other genera exhibited are Barhus, 



