No. 394.] WAMES OF CERTAIN FOSSIL FISHES. 791 
his North American Geology and Paleontology. This Appendix 
was issued about the beginning of the year 1893, and contains 
a number of new names which were proposed as substitutes 
for preoccupied generic names of fishes. These are, omitting 
those already mentioned, as follows: Eczematolepis for 
Acantholepis Newberry; Tegeolepis for Actinophorus New- 
berry; Ponerichthys for Dinichthys Newberry; Dissodus for 
Diplodus Agassiz; Haplolepis for Eurylepis Newberry ; Gam- 
phacanthus for Heteracanthus Newberry; Lispognathus for 
Liognathus Newberry; Millerichthys for Pterichthys Agassiz ; 
Oestophorus for Sphenophorus Newberry. 
Most of these names proposed by Miller must, I think, be 
accepted, but not all. For Diplodus, which is manifestly pre- 
occupied, Dissodus is not required, since there is a number of 
available synonyms of Diplodus. Of these Dittodus (Owen!) is 
probably to be preferred. In proposing Ponerichthys to replace 
Dinichthys Miller labored under a misapprehension. The 
genus Dinichthys was founded by Dr. Newberry in 1868,? 
being based on the species D. hersert. In the same year Prof. 
C. H. Hitchcock? published an account of Dinichthys, but it 
was a report of Newberry’s discovery, and the author made no 
pretense of claiming credit for the name. In any case, there 
is no demand for a new name since the Dinichthys of both 
writers was based on the same species. 
As regards Pterichthys, there is no getting around the fact 
that the name as employed by Agassiz in 1844 is preoccupied. 
Swainson in 1839¢ first applied the name to a group of recent 
fishes, defining it and referring to it a number of recognized 
species. But Millerichthys, proposed in honor of Hugh Miller, 
is superfluous, as well as devoid of euphony. Peter Bleeker 
as long ago as 1859° had perceived that the Pterichthys of 
Agassiz was antedated, and by a lucky stroke of his pen had 
parenthetically proposed Pterichthyodes in its place. This 
1 See A. S. Woodward’s Cat. Foss. Fishes, part i, p. 2. 
2 Proc. Amer. Assoc. Adv. Sci., 16th meeting, p. 146. 
3 Geolog. Mag., [1], vol. v, p. 1 
4 Nat. Hist. and Class. Fishes, etc., ii, p. 265. 
5 Enum. Spec. Pisc. Arch. Ind., Tentamen, p. 11. 
