EASTMAN: CATALOG OF FOSSIL FISHES IN CARNEGIE MUSEUM. 363 



1895. Ophiopsis guigardi A. S. Woodward. 



Cat. Foss. Fishes Brit. Mus., Ft. Ill, p. 169. 



" Type. — Nearly complete fish; Lyons Museum. 



A species attaining a length of about 30 cm. Length of head with opercular 

 apparatus equal to the maximum depth of the trunk and contained about five-and- 

 a-half times in the total length of the fish; maximum depth of trunk twice as great 

 as the depth of the caudal pedicle. Fin-fulcra slender, extending up the anterior 

 ray of each median fin. Dorsal fin less than half as long as the back, much elevated 

 in front, arising at the beginning of the second third of the trunk. Scales relatively 

 large and smooth." (A. S. Woodward, I. c, Pt. Ill, p. 169). 



This is a rare form, known only from Cerin, and is not represented in the Bayet 

 Collection. 



7. Ophiopsis macrodus Thiolliere. (Plate LI, fig. 2). 



1850. Ophiopsis macrodus Thiolliere. 



Ann. Soc. Sci. Phys. et Nat. Lyon [2] Vol. Ill, p. 148. 

 1873. Ophiopsis macrodus Thiolliere. 



Poiss. Foss. Bugey, Pt. II, p. 19. 

 1895. Ophiopsis macrodus A. S. Woodward. 



Cat. Foss. Fishes Brit. Mus., Pt. Ill, p. 172. 



Type. — Nearly complete fish; Lyons Museum. 



A much elongated species of small size, attaining a total length of about 18 cm. 

 Length of head with opercular apparatus equal to the maximum depth of trunk, 

 and contained about five times in the total length; width of caudal pedicle half as 

 great as the maximum depth of trunk. Head and opercular bones smooth, teeth 

 elongate-conical, of relatively very large size and widely spaced. Dorsal fin low, 

 not much extended, and arising at a point about opposite the pelvic pair. Fin- 

 fulcra slender on all the fins, none of which is strongly developed. Scales smooth 

 and relatively small, with entire posterior borders, and in numerous vertical series. 



This species has been briefly described but not previously illustrated, and would 

 appear to be a rare form. From the type species, 0. procera, it is distinguished hy 

 the following characters, as noted by the original author: 



" L'espece nouvelle . . . me parait differer de VO. procerus en ce que les dents 

 en sont beaucoup plus fortes et la dorsale bien moins vigoureuse. Les ecailles 

 de VO. macrodus ne sont pas, non plus, aussi uniformes que celles de l'espece de 

 Solenhofen." 



A single example of this species is preserved in the Bayet Collection of the 

 Carnegie Museum. It is cataloged as No. 4104, and is shown in the plate. A 

 small example of Notagogus is contained in the same slab. 



