﻿458 vcrrxorTEEYGU. 



anterior part of the pectoral fins ; fulcra minute. Dorsal and anal 

 fins not excessively elongated, remote, almost or completely opposed 

 to each other. Scales small, very slightly imbricating, and ex- 

 ternally striated ; those of the flank deep and narrow, with relatively 

 large peg-and-socket articulation. 



Nematoptychius greenocki, Traquair. 



1844. Pygoptei'us greenockii, L. Agassiz, Poiss. Foss. vol. ii. pt. ii. 

 p. 78 (undefined). 



1866. Pygopterus greenockii, B. H. Tiaquair, Proc. Roy. Soc. Edinh. 

 vol. v. p. 597. 



1867. Pygopterus greenockii, B. H. Traquair, Trans. Boy. Soc. Edinh. 

 vol. xxiv. p. 701, pi. xlv. 



1872. Pygopterus elegans, C. W. Peach, Bep. Brit. Assoc. 1871, Trans. 



Sect. p. 109 (name only). [Edinburgh Museum.] 

 1875. Nematoptychius greenockii, B. H. Traquair, Ann. Mag. Nat. Hist. 



[4] vol. xv. p. 258, pi. xvi. figs. 7-11 . 

 1877. Nematoptychius gracilis, B. H. Traquair, Proc. Boy. Soc. Edinb. 



vol. ix. p. 262. [Collection of Dr. B. H. Traquair.f 

 1877. Nematoptychius greenockii, B. H. Traquair, Quart. Journ. Geol. 



Soc. vol. xxxiii. p. 577, and Ganoid Fishes Brit. Carb. Form. (Pal. 



Soc), pi. i. figs. 7-11. 

 1879. Nematoptycliius greenockii, B. H. Traquair, Proc. Boy. Phys. 



Soc. Edinh. vol. v. pp. 118, 128. 

 1890. Ne?7iatoptychius greenockii, B. H. Traquair, Proc. Boy. Soc. 



Edinb. vol. xvii. pp. 391, 398. 



Type. Imperfect fish ; Edinburgh Museum. 



Maximum depth of trunk contained more than five times in the 

 total length ; dorsal contour of abdominal region scarcely arched. 

 Head elongated, small, and snout pointed ; head and opercular appa- 

 ratus occupying nearly one quarter of the total length ; maxilla orna- 

 mented by striae parallel to the hinder and upper margins, passing 

 into irregular tuberculations near the alveolar border; dentary 

 bone externally tuberculated or irregularly rugose. Pelvic fins 

 well developed, arising midway between the pectoral pair and the 

 anal. Dorsal and anal fins similar in form, somewhat longer than 

 high, the dorsal slightly smaller than the anal and arising immedi- 

 ately in front of the latter. Scales externally ornamented with very 

 fine, wavy ridges, sometimes branching and anastomosing, directed 

 obliquely downwards. 



Form, Sf Log. Calciferous Sandstone Series : Midlothian and Fife- 

 shire. Carboniferous Limestone Series : Midlothian and Lanark- 

 shire. 



