﻿AlsTEJIOLEPlDJS 



225 



linear process, less than 001 in breadth, and about 0-004 in 

 length ; after which it widens, at a right angle to the longer axis 

 of the body, into a small and narrowly pentangular expansion about 

 0*002 broad and 0*003 in length, which reaches nearly as far as the 

 inner surface of the anterior ventral plates, though these are very 

 much crushed up wards. "' 



Bothriolepis ornata, Eichwald. 



1840. Bothryolepis prisca, E. Eichwald, Neues Jahrb. p. 425 (name 



only). 

 1840. Bothriolepis ornatus, E. Eichwald, Bull. Sci. St.-Pe'tersbourg, 



vol. vii. p. 79. 



1844. Glyptosteus reticulatus, L. Agassiz, Poiss. Foss. vol. i. p. xxxiv 

 (name only), in part. 



1845. Bothriolepis ornatus, L. Agassiz, Poiss. Foss. V. G. R. p. 99 (in 

 part), pi. xxix. figs. 1, 2 (non figs. 3-5). 



1857. Asterolepis, C. H. Pander, Placoderm. devon. Syst. p. 44. 



1860. Bothriolepis ornata, E. von Eichwald, Leth. Rossica, vol. i. 



p. 1513, pi. lvi. fig. 3. 

 1880. Bothriolepis ornata, J. Lahusen, Verhandl. russ.-kais. mineral. 



Gesell. [2] vol. xv. p. 136. 

 1888. Bothriolepis ornatus, R. H. Traquair, Geol. Mag. [3] vol. v. 



p. 509. 



Type. Anterior median dorsal plate ; University of St. Petersburg. 



The type species, of considerable size. Anterior median dorsal 

 plate longer than broad, faintly carinated, ornamented with large 

 pittings, due to the complete fusion of the tubercles ; no distinct 

 stellate tubercles. 



Form. Sf Loc. Devonian : N.W. Russia. 



P. 710. Imperfect anterior median dorsal plate and other fragments ; 

 Prikscha, Government of Novgorod. Egerton Coll. 



P. 4600. Imperfect proximal marginal plate of appendage ; Prikscha. 



Enniskillen Coll. 



43452 a. Fragments of plates ; Prikscha. 



Presented by Kenneth Murchison, Esq., 1872. 



Bothriolepis panderi, Lahusen. 



1880. Bothriolepis pander i, J. Lahusen, Verhandl. russ.-kais. mineral. 



Gesell. [2] vol. xv. p. 125, pis. i., ii. 

 1880. Bothriolepis pander i, H. Trautschold, Bull. Soc. Imp. Nat. Moscou, 



pt. ii. p. 169, pi. ii. 



PART IT. Q 



