CRYPHIOLEPIS STRIATUS. 107 
Fauna of Bohemia, published in 1893,’ changed into Zrissoepis, making the genus 
likewise into the type of a new family, ‘“ Trissolepide,”’ of which I may quote his 
definition : 
“ Korper Paleoniscusartig, Schuppen hinter dem Kopfe bezahnt, am Kérper cycloid, 
am Schwanze rhombisch. Hautknochern des Kopfes glatt mit wenig Leisten und 
Griibchen versehen. Vorderrand der Flossen ohne Fulcra. Gaumen stark bezahnt. 
Kiemenbogen mit starken Rechenzihnen, Mittellinie des Rickens bloss vor der Riicken- 
flosse mit V-formigen Schuppen, die allméhlig in die Flossenstrahlen tibergehen.”’ 
These characters are not, in my opinion, sufficient to warrant the separation of 
Trissolepis from the Palzeoniscidee, of which family I would consider it as an aberrant 
genus, resembling Cryphiolepis in having rounded scales, but differing in the more 
regularly cycloid form of these appendages in the want of fulcra on the fins and in the 
absence of the peculiar striated sculpture of scales and head-plates. 
Again, with regard to the round-scaled Coccolepis Bucklandi of the Solenhofen Lime- 
stone, classed by Agassiz as one of the ‘ Lepidoidei Heterocerci,” I remarked in 1877 
that ‘its relationship to the Paleeoniscidee seems to be indicated both by Agassiz’s figure 
and description,” and this surmise has been amply confirmed by Vetter? as regards the 
above-named species, and by Smith Woodward in his descriptions of Coecolepis liassica 
from the English Lias,® and of C. australis from the Talbralgar beds (Jurassic ?) of New 
South Wales.* 
It is also interesting that in these round-scaled Paleoniscide the scales of the 
caudal body-prolongation always preserve their original angular form, and that these 
scales persist also in their original form in the nearly naked Carboniferous Panerosteon, 
the Liassic Chondrosteus, and the recent Polyodon. 
Geological Position and Locality.—Cryphiolepis striatus is, with one exception, only 
known as occurring in the Borough Lee Ironstone, Middle Carboniferous Limestone 
or “ Edge Coal” Series, worked at Borough Lee and Loanhead, near Edinburgh,—the 
exception being a single scale in the collection of the Geological Survey of Scotland in 
shale, also of ‘‘ Edge Coal” age, from the “ Burnlip Diamond Bore,” two miles north of 
Coatbridge, near Glasgow. The original types are in the collection of the author. 
1 «Fauna der Gaskohle und der Kalksteine der Perm-formation Bohmens,’ Band iii, Heft 2, Prag, 
1893, p. 76. 
2 “Die Fische aus dem lithographischen Schiefer im Dresdner Museum,” ‘ Mittheil. k. Min.-geol. 
Mus. Dresden,’ pt. iv, 1881, p. 37. 
3 “Ann. and Mag. Nat. Hist.’ [6], vol. v, 1890, p. 435. 
4 “Fossil Fishes of the Talbralgar Beds,” ‘Mem. Geol. Survey N. South Wales,’ Paleontology, 
No. 9, 1893, pp. 4—8. 
16 
