SEMIOX OTIDiE. 
69 
ment of the characters of the trunk is based on the assumption 
that the nearly complete specimens of fishes from the Tyrol and 
Italy, recorded below under the names of C. ornatus and C. latus , 
are generically identical with the unknown fish to which the first- 
discovered example of dentition belongs. The name Colobodus is 
here preferred to that of Asterodon, because it seems to have been 
universally employed and is adopted by Professor W. Dames in his 
memoir giving the first satisfactory account of the genus (Palaeont. 
Abhandl. vol. iv. 1888, p. 153). 
Colobodus hogardi, Agassiz. 
1844. Colobodus hogardi , L. Agassiz, Poiss. Foss. vol. ii. pt. ii. pp. 237 
244. 
1852. Colobodus hogardi . P. Gervais, Zool. et Pal. Franc., Poiss., Explic. 
Planches, p. 13, pi. lxxvii. fig. 15. 
1853. Colobodus hogardi , C. G. Giebel, Zeitschr. naturw. Vereins Halle, 
vol. ii. p. 325. 
1888. Colobodus hogardi. W. Dames, Palaeont. Abhandl. vol. iv. p. 159. 
Type. Fragment of dentition; Strassburg Museum. 
The type species, known only by portions of dentition. Teeth 
crowded and thus of irregular polygonal form, with feebly striated 
crown and an apical tubercle not surrounded by an annular indent. 
The type specimen was obtained from the Muschelkalk of Luneville. 
Form. Loc. Fpper Muschelkalk: Luneville, France. Letten- 
kohl i Miirtemberg. 
Xot represented in the Collection. 
Colobodus frequens, Dames. 
1837. Gyrolepis albertii, H. B. Geinitz, Beitr. Kennt. Thiiring. Muschel- 
kalkgeb. p. 21, pi. iii. figs. 3 a, b (errors). 
1844. Scales described and figured bv Meyer and Plienimrer, Beitr. 
Palaeont. TViirttembergs, p. 84, pi. xi. figs. 21-23, 25. 
1851. Scales described and figured by H. von Meyer, Palteontogr. vol. i. 
pp. 200, 248, pi. xxix. figs. 2, 4, 5, 10, 11,14-16,18-21, 23,27-29 
(P figs. 3, 6), pi. xxxi. figs. 35-41. 
1852. Gyrolepis albertii, F. A. Quenstedt ( errore ), Handb. Petrefakt. 
p. 206, pi. xvii. figs. 6, 7, 12 (Pfig. 8). 
1861. Tholodus 1 minutus, E. E. Schmid, Xova Acta Acad. Caes. Leop.- 
1 The genus Tholodus was originally founded by H. von Meyer on a fragment 
of dentition from the Muschelkalk of Fpper Silesia, which may be reptilian. 
The type species is T. schmidi (H. von Meyer, in Schmid & Sclileiden, Geogn. 
Verhalt. Saalthals Jena (1816). p. 37, and Palaeontogr. vol. i. (1849), p. 199, 
pi. sxxi. figs. 27, 28). pg c/TW/^A. 
a /?. />•/. fA*, . 
