CATALOG OF THE FOSSIL FISHES IN THE CARNEGIE MUSEUM. 407 



perfect specimen in counterpart, in the Carnegie Museum. This is cataloged as 

 No. 4468 + 4468a. 



22. Propterus speciosus Wagner. (Plate LXIII, fig. 1.) 

 (For synonymy cf. A. S. Woodward, Cat. Foss. Fishes Brit. Mus., Pt. Ill, p. 184.) 

 Two nearly complete individuals in the collection are referable to this species. 

 These are cataloged as numbers 4698 and 4825, and have a length of 12 cm. and 

 7 cm. respectively. 



23. Propterus conidens, sp. nov. (Plate LXII, fig. 2.) 

 Type. — Nearly complete fish; Carnegie Museum Cat. No. 4825. 

 A small species, attaining a length of about 10 cm. and maximum depth of 

 2.7 cm. Length of head with opercular apparatus contained nearly three times 

 in the total length to the base of the caudal fin. Form of body elegantly fusiform, 

 the dorsal and ventral borders gently arched, and width of the caudal pedicle a 

 little more than half as great as the maximum depth of trunk. Fins as in P. 

 speciosus, except that the dorsal fin is less elevated, its height falling considerably 

 short of the maximum depth, and comprising apparently fewer rays. Caudal fin 

 deeply forked. Scales finely denticulated. 



The specific title is bestowed in allusion to the dental characteristics. The 

 marginal teeth are sharply pointed, long and slender, and closely apposed to one 

 another; as many as thirteen of them are to be counted along the rim of the jaw 



on one side. 



Genus Notagogus Agassiz. 



24. Notagogus decoratus, sp. nov. (Plate LXVIII, fig. 2.) 

 Type. — Well-preserved small fish; Carnegie Museum Cat. No. 5110. 

 Founded upon a unique specimen having a total length of 4.7 cm. Length 

 of head with opercular apparatus exceeding the maximum depth of the trunk, and 

 contained three times in the total length to the base of the caudal fin. Dorsal 

 and ventral borders little arched, the trunk tapering very gradually toward the tail. 

 Dorsal fin arising far forwards, its anterior portion comprising about fifteen rays,* 

 very widely spaced after the first three, which are closely approximated; second 

 portion of the dorsal fin with about ten rays, also widely spaced with the exception 

 of the first three; the rays of both portions gradually decreasing in length from 

 the third or fourth ray onwards, and those of the anterior portion more elevated 

 than those of the posterior portion; the longest fin-rays exceeding the maximum 

 depth of trunk. Caudal fin slightly forked, comprising about sixteen rays, its margins 



