﻿2 12 RIRENOIDEI. 



The following species have also been founded upon detached teeth, 

 of which the majority may belong to this genus. They are not 

 represented in the Collection. 



Dipterus (Ctenodus) flabelliformis, J. S. Newberry, Palaaoz. Fishes 



N. America (Mon. U. S. Geol. Surv. no. xvi. 1889), p. 90, 



pi. xxvii. fig. 2 1 . — Chemung Group ; Warren, Pennsylvania. 



[Columbia College, New York.] 

 Dipterus glaber, C. H. Pander, Ctenodipt. devon. Syst. (]858), 



p. 29, pi. vii. fig. 10 (named Dipterus (Cheirodus?) glaber 



on plate). — Devonian ; Ssjass, Govt, of St. Petersburg. 



[School of Mines, St. Petersburg.] 

 Dipterus (Ctenodus) levis, J. S. Newberry, op.cit. p. 90, pi. xxvii. 



figs. 22, 23. — Chemung Group ; Warren, Pa. [Columbia 



College, New York.] 

 Dipterus {Ctenodus) minutus, J. S. Newberry, ibid. p. 91, pi. xxvii. 



fig. 26. — Chemung Conglomerate ; Warren, Pa. 

 Dipterus murchisoni, C. H. Pander, op. cit. p. 23, pi. vii. figs. 2-4. 



— Devonian ; Russia. [School of Mines, St. Petersburg.] 

 Dipterus (Ctenodus) nelsoni, J. S. Newberry, op. cit. p. 89, 



pi. xxvii. figs. 19, 20. — Chemung Group; Warren, Pa. 



[Columbia College, New York.] 

 Dipterus parvulus, L. Agassiz, Poiss. Foss. V. G. R. (1845), p. 124, 



pi. xxviii. a. fig. 23 (Ctenodus)-, E. von Eichwald, Leth. 



Rossica, vol. i. (1860), p. 1537 : Dipterus tuberculatus, 



6. H. Pander, op. cit. p. 22, pi. v. figs. 20-22.— Devonian ; 



Russia. 

 Dipterus (Ctenodus) radiatus, J. S. Newberry (non Eichwald & 



Pander), op. cit. p. 119, pi. xxvii. fig. 33. — Catskill 



Group ; Tioga Co., Pa. 

 Dipterus slierwoodi, J. S. Newberry, Rep. Geol. Surv. Ohio, vol. ii. 



pt. ii. (1875), p. 61, pi. lviii. fig. 17, and op. cit. (1889), 



p. 118, pi. xxvii. fig. 3. — Catskill Group ; Tioga Co., Pa. 



[Columbia College, New York.] 

 Dipterus verneuilli, C. H. Pander, op. cit. p. 21, pi. v. figs. 1-9 ; 



E. von Eichwald, Leth. Rossica, vol. i. (1860), p. 1538.— 



Devonian : Russia. [School of Mines, St. Petersburg.] 



Indeterminable scales from the Devonian of the neighbourhood of 

 St. Petersburg have also been named Dipterus arenaceus, E. von 

 Eichwald, Bull. Soc. Imp. Nat. Moscou, vol. xvii. (1844), p. 831, 

 and ibid. vol. xix. (1846), p. 308, pi. x. figs. 31, 32, and Leth. 

 Rossica, vol. i. (1860), p. 1540, pi. lvii. fig. 17. 



An undetermined and imperfectly described jaw, from the Lower 



