﻿404 CROSSOPTERYGII. 



more or less concentric with the three margins. Cranial roof-bones 

 in part ornamented with series of tuberculations. Scales pointed, 

 very finely striated, the striae directed antero-posteriorly and con- 

 verging behind, more or less irregular, often divided into elon- 

 gated tubercles in the hinder portion. 



This is the type species of Hoplopygus, Conchiopsis, and Rhab- 

 doderma. 



Form. Sf Loc. Coal-Measures : Ohio, England, and Scotland. 

 Culm-Measures : North Devonshire. 



P. 579-81. Three specimens described and figured by Huxley, op. 

 cit. p. 20, pi. v. figs. 1-4 ; Linton, Ohio. Egerton Coll. 



P. 746. Typical specimen, wanting the pectoral fins, the second 

 dorsal, and the terminal caudal ; Linton. Egerton Coll. 



P. 3334. Imperfectly preserved fish, wanting the pectoral and 

 terminal caudal fins ; Linton. EnnisTcillen Coll. 



P. 3332. Imperfect caudal region, showing the terminal fin, labelled 

 Ccelacanihus lepturus by Agassiz ; Leeds. 



Enniskillen Coll. 



36477. Remains of fish displaying the dorsal fins and the principal 

 caudal ; Longton, K". Staffordshire. Purchased, 1862. 



P. 748. Remains of trunk showing portions of the air-bladder; 

 Deep Mine, Longton. Egerton Coll. 



P. 3330-31. Two imperfect fishes ; Knowles Ironstone Shale, Ten- 

 ton, and Deep Mine, Longton. EnnisTcillen Coll. 



P. 5177. Small fish, with well-preserved scales; Longton. 



Purchased, 1885. 



42382. Imperfect fish ; Gubbin Ironstone, Tipton, S. Staffordshire. 



Purchased, 1870. 



40393. Smaller specimen, in counterpart, wanting head ; Tipton. 



Purchased, 1866. 



30572. Fish with portions of well-preserved fins ; Dalemoor-Eake 

 Ironstone, Stanton-by-Dale, Derbyshire. 



Purchased, 1856. 



48055. More imperfectly preserved specimen, in counterpart, dis- 

 playing zne principal caudal fin; Dalemoor-Eake Iron- 

 stone, Stanton-by-Dale. 



Presented by Moses Rigley, Esq., 1877. 



