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precise character of the squamation of the described fossil fishes, so far 
as that may be done. In this matter the published descriptions and 
figures are usually of small value, and it becomes necessary to study | 
the actual specimens in Museums. This is of course a great undertaking, 
requiring many students; the present writer cannot hope to do much, 
but a few notes made at the U. S. National Museum are offered 
herewith. 
Amyzon sp. (Catostomidæ.) 
“From near Pikes Peak”. The character of the rock shows that it 
is from the Miocene shales of Florissant, Colorado. 
A large fish; depth near middle over 50 mm.; spread of tail fully 
50 mm.; scales cover basal part of caudal fin. 
Scales with strong apical radi, with quite coarse regular circuli 
between, these more or less angularly bent in middle line; no lateral 
radii; apparently a few basal radii, but these not clear. 
A detached scale shows circuli going all round, the basal circuli 
fine; basal and apical radii, but no lateral ones. The apical number 
8 or 9. These scales agree well in type with the living Catostomide. 
Especially such forms as Moxostoma cervinum Cope. 
Leuciscus turneri Lucas. (Cyprinidæ.) 
No. 4302a. Part of type lat. (Miocene, Nevada.) It is also label- 
led Semotilus. I count 9 dorsal fin-rays, and 10 anal. 
Scales with about 10 or 12 fine close nearly parallel apical radii, 
and normal circuli; apical circuli not or hardly angled. The scales can 
be seen distinctly only on the caudal peduncle. 
This will stand as Richardsonius turneri (Lucas). Some of the 
Japanese species which Jordan and Metz refer to Richardsonius have 
10 anal rays. In the modern American species the number is usually less. 
I take occasion to note that Jordan and Metz (Mem. Carnegie 
Museum, VI, p. 18) refer a Korean species of Phoxinus to the American 
genus Hemitremia, because, they say, I found the scales of Hast Asian 
Phoxinus to differ from those of the true (Huropean) genus. As a 
matter of fact, I have never seen any East Asian Phoxinus, and my 
statements referred only to the European and American fishes referred 
_ to that genus. 
Syllemus latifrons Cope. (Crossognathidæ.) 
No. 4979. Cretaceous. New Mexico? 
Broad scales with fine normal circuli, not at all transverse (i. e. not 
as in Clupeidæ) apex of scale not seen, but base and sides certainly 
without radii; well marked growth-lines at intervals. The absence of 
basal radii distinguishes this atfonce from Mugil and Liza. In Hays 
