EASTMAN: CATALOG OF FOSSIL FISHES IN CARNEGIE MUSEUM. 387 



28. Thrissops formosus Agassiz. 

 1833-44. Thrissops formosus L. Agassiz. 



Poiss. Foss., Vol. II, pt. I, p. 12; Pt. II, p. 124, pi. LXVa. 

 1844. Thrissops subovatus L. Agassiz {ex Miinster MS.). 



Ibid., Pt. II, p. 128 (undefined). 

 1839. Thrissops ovatus G. von Miinster. 



Neues Jahrb., p. 680. 

 1852. Thrissops formosus F. A. Quenstedt. 



Handb. Petrefakt., p. 219, pi. XVII, fig. 19. 

 1863. Thrissops formosus A. Wagner. 



Abh. K. Bayer. Akad. Wiss., Math.-Phys. CL, Vol. IX, p. 734. 

 1863. Thrissops subovatus A. Wagner. 



Ibid., p. 734. 

 1888. Thrissops formosus K. A. von Zittel. 



Handb. Palaont., Vol. Ill, p. 273, figs. 280, 281. 

 1895. Thrissops formosus A. S. Woodward. 



Cat. Foss. Fishes Brit. Mus., Pt. Ill, p. 521. 



" Type. — Nearly complete fish; Paleontological Museum, Munich. 



The type-species, attaining a length of about 50 cm. Head with opercular 

 apparatus occupying from one-eighth to one-seventh of the total length of the fish; 

 maximum depth of trunk much exceeding the length of the head with opercular 

 apparatus, and contained about three-and-a-half times in the length of the trunk 

 from the pectoral arch to the base of the caudal fin. Vertebrae at least 60 in number, 

 about 32 being abdominal and 28 caudal. Pelvic fins arising much nearer to the 

 anal than to the pectorals, and comprising about 5 rays; dorsal fin with 14 rays, 

 arising somewhat behind the origin of the anal, which is much elevated in front and 

 comprises not less than 30 rays; caudal fin very deeply forked and the lobes slender. 

 Scales partly ornamented with delicate radiating striae." (A. S. Woodward, I. c, 

 Pt. Ill, p. 521). 



A single undoubted representative of this species, which has not been heretofore 

 reported from the French lithographic limestone, forms part of the Bayet Collection 

 in the Carnegie Museum, and is cataloged as No. 4083. It has a total length 

 of about 34 cm., the extremity of the tail being preserved in impression. 



29. Thrissops regleyi ThioUiere. 

 1854. Thrissops regleyi ThioUiere. 



Poiss. Foss. Bugey, Pt. I, pi. X, fig. 2 (figure only). 



