﻿230 



'..NTIARCflA. 



Bothriolepis hydrophila (Agassiz). 

 [Plate VI. fig. 9.] 



1844. Pamphractus hydrophilus, L. Agassiz, Poiss. Foss. V. G. R. 

 pp. 5, 21, pi. iv. tigs. 4-7. 



1844. Pamphractus andersoni, L. Agassiz, ibid. p. 21. 



1845. Homothorax jiemingii, L. Agassiz, ibid. p. 134, pi. xxxi. fig. 6. 

 1848. Pterichthys hydrop>hilus, H. Miller & Sir P. Egerton, Quart. 



Journ. Geol. Soc. vol. iv. pp. 312. 314. 

 1859. Pamphractus andersoni = Ptericlithys hydrophilus, J. Anderson, 



Dura Den, pp. 49, 52, pi. i. fig. 1. 

 1862. Pterichthys hydrophilus, J. Powrie, Quart. Journ. Geol. Soc. 



vol. xviii. p. 435. 

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



p. 510, and Ann. Mag. Nat. Hist. [6] vol. ii. p. 500, pi. xviii. 



figs. 4, 5. 



Type. Imperfect individuals, dorsal aspect ; Museum of Practical 

 Geology. 



A small species, the head and trunk attaining a length of about 



Bothriolepis hydrophila (Ag.). — Dorsal aspect, restored by E. H. Traquair. 

 a., anconeal ; a. m.d., anterior median dorsal; a.d.l., anterior dorso-lateral; 

 ar., articular; m., marginal; p.dd., posterior dorso-lateral; p.m.d., pos- 

 terior median dorsal. 



0-08-0-09. Form of head, trunk, and dorsal plates as in B. cana- 

 densis. Proximal segment of pectoral appendages broad, but elon- 



