LA PHILOGÉNIE DES DIPNEUSTES 



1 1 5 



(10) Couches de John O'Groats, à Tristichopterus alatus (Upper Flagstcne 

 Group). 



(R. H. Traquair. Ôn a New Species of Dipterus. Geological Magazine, 1889, 

 p. 98; A. Geikie. On the Old Red Sandstone of Western Europe. Trans. Roy. Soc. 

 Edinburgh, 1878, vol. XXVIII, p. 452). 



(11) Lower Flagstone Group (A. Geikie. On the Old Red, etc., p. 452). 



(12) A. S. Woodward. Catalogue, etc., Part II, p. 234. 



— R. H. Traquair. Notes on the Devonian Fishes, etc., (n° 3), p. 263. 



(13) «The tail thus formed is beautifully diphycercal, as seen in Fig. 2 ; there 

 being, however, as above remarked, a slight upward curvature of the axis of the 

 body at its caudal extremity. » 



[R. H. Traquair. On Phaneropleuron Andersoni (Huxley), and Uronemus Loha- 

 tus (Agassi^). Journ. Roy. Geol. Soc. Ireland, 1871, vol. III, p. 45]. 



(14) ce The tail of Phaneropleuron is then beautifully diphycercal, a slight tendency 

 to the heterocercal form being, however, shown by a very constant, though slight, 

 upward curvature of the caudal extremity of the body. » 



(R. H. Traquair. On Phaneropleuron, etc., p. 42). 



( 1 5 ) « The base of the second dorsal extends to a point alittle beyond the commen- 

 cement of the lower lobe of the caudal, but as its rays are long, and the posterior 

 ones directed nearly horizontally backwards, the fin seems to extend near to the tip of 

 the tail... As regards the caudal fin it is in reality heterocercal, the upper lobe being 

 represented only by very short rays towards the tip of the body prolongation... » 



[R. H. Traquair. Notes on the Devonian Fishes, etc., (n<> 3), p. 263]. 



(16) A. Agassiz. On the Young Stages ofsome Osseous Fishes. I. Development of 

 the Tail. Proc. Amer. Acad. Arts a. Sciences, 1877, vol. XIII, p. 119. 



(17) R. H. Traquair. Notice of New Fish Remains from the Blackband Ironstone 

 of Borough Lee, near Edinburgh (n° 2). Geological Magazine, 1881, p. 491. 



(18) A. Fritsch. Fauna der Gaskohle und der Kalksteine der Permformation 

 Bohmens. Vol. III, 2 0 partie, Prague, 1893. 



(19) A. S. Woodward. Note on the Evolution ofthe Scales of Fishes. Natural 

 Science, 1893, p. 449. 



— A. S. Woodward. The Fossil Fishes ofthe Hawkesbury Séries at Talbragar. 

 Mem.Geol. Surv. N.S. Wales. N° 9, Pl. IV, fig. 1-7. 



— A. S. Woodward. Catalogue, etc., Part III, p. 157. 



(20) A S. Woodward. Catalogue, etc., Part II, p. 235. 



(21) A. S. Woodward. Catalogue, etc., Part II, p. 25o et Pl. IV, fig. 1. 



(22) A. Gûnther. Description of Ceratodus, a genus of Ganoid Fishes, recently 

 discovered in Rivers of Queensland, Australia. Phil. Trans. Roy. Soc. London, 

 1871. Vol. 161, p. 524. 



(23) Th. L. W. Bischoff. Lepidosiren paradoxa. Leipzig, 1840, p. 10 et Pl. IV, 

 fig.I. 



(24) R. H. Traquair. On the Gênera Dipterus, Sedgw. and Murch., Palœdaphus, 



