72 
ACTINOPTERYGrII. 
Type. Imperfect head and anterior scales; University Geological 
Museum, Gottingen. 
A large species known only by portions of the head and squama- 
tion. External head-bones ornamented with closely arranged rugae ; 
teeth resembling those of C. varius. Scales differing little from 
those of C. varius , but wanting the upper and lower almost free 
transverse ridges and having all the other ridges stouter than in the 
last-named species. 
Form. Toe. Upper Muschelkalk and Lettenkohl: Germany, Firm 
Not represented in the Collection. 
Colobodus chorzowensis (H. von Meyer). 
1847. Omphalodus chorzoiviensis, H. von Meyer, Neues Jahrb. p. 574. 
1848. Colobodus (P) chorzoiviensis, C. G. Giebel, Fauna d. Vorw., Fische, 
p. 466. 
1851. Nephrotus chorzowensis, H. von Meyer, Palseontogr. vol. i. p. 242, 
pi. xxviii. fig. 20. (Also scales described and figured ibid. pp. 251, 
252, pi. xxix. figs. 30-37.) 
1865. Colobodus chorzoivensis , H. Eck, Form. bunt. Sandst. u. Muschelk. 
Oberschlesien, p. 66. 
1865. Fleurolepis silesiacus, H. Eck, ibid. p. 71. [Scales.] 
1884. Eupleurodus sulcatus, G. Giirich, Zeitsclir. deutsch. geol. Ges. 
vol. xxxvi. p. 142, fig. 5. [Fragment of dentition ; coll, of Herr 
Mocke, Kattowitz.] 
1888. Colobodus chorzoivensis, W. Dames, Palaeont. Abhandl. vol. iv. 
p. 167, pi. xvi a. figs. 1-8. 
Type. Fragment of dentition. 
A species known only from fragments of dentition and detached 
scales. Teeth oval or irregularly rounded, not crowded together, 
the crowrn of each nearly smooth and with a large apical tubercle. 
Scales ornamented with a few very large oblique ridges, which do 
not bifurcate and often extend directly from the anterior to the 
posterior border. 
Form. Loe. Lower Muschelkalk: Upper Silesia. 
Not represented in the Collection. 
Colobodus ornatus (Agassiz). 
1832. Lepidotes ornatus, L. Agassiz, Neues Jahrb. p. 145. 
1833-37. Lepidotus ornatus, L. Agassiz, Poiss. Foss. vol. ii. pt. i. pp. 9, 
249, pi. xxxii. 
(?) 1844. Lepidotus speciosus, L. Agassiz (ex Miinster, MS.), ibid. p. 266, 
pi. xxxiv a. figs. 5-7. [Imperfect tail; Palaeontological Museum, 
Munich.] 
