On the Fossil Fishes of the Carboniferous Limestone Series of Great Britain 379 
Cladodus he transferred it there. The example is stated to be unique. It is im 
perfect and a doubt is expressed as to whether it is a separate species. The principal 
cone is insensibly contracted towards the point, and in this it differs from C. milleri, 
Agass., with which it was found. The folds of enamel are not so fine and the base 
of the tooth is not so large. Secondary cones not present. I have not been able 
to find the type at the museum at Bristol, where Prof. Agassiz states it was 
located. 
Formation and locality : Mountain Limestone, Bristol. 
Cladodus basalis, Agassiz MSS. 
(PL, 2XILIDKo, ies ILS) 
Cladodus basalis,—Agassiz, L., Captain Jones’s Collection MSS. 
Pe yy Portlock, J. E., 1844. “Geol. Report Londonderry, &c.,” p. 461. 
eA 5 Morris and Roberts, 1862. “ Quart. Journ. Geol. Soc.,” Vol. XVIII, p. 100 
Teeth, comparatively small, base broad as central cone is long, breadth of base 
is ‘4inch. Median cone broad at the base, gradually tapering, curved backwards, 
anterior basal surface depressed and concave, surface above marked by a series of 
longitudinal ridges, broad and strong, separated by grooves about equal to them in 
width. Apex of cone much worn by attrition, Lateral secondary cones small, 
‘1 inch in length, two on each side, the external ones little if any larger than the 
intermediate ones ; striated in the same manner as the central cone. 
The type specimen of this species was named by Professor Agassiz whilst 
in the collection of Admiral Jones, and was afterwards transferred to the 
Museum. of the Geological Society. It presents somewhat similar features to 
Cladodus mirabilis, but more careful examination prove some points of difference. 
The tooth appears to be full grown judging from its worn appearance, and must 
consequently have belonged to a smaller fish than the great teeth of C. mirabilis 
The longitudinal ridges are much thicker and strorger than those of other species 
and do not present any of the thread-like appearance of the ridges on C. mirabilis. 
Formation and locality : Mountain Limestone, Armagh. 
Ex coll. Geological Society’s Museum. 
Cladodus curtus, Davis. 
(Pl. XLIX., fig. 19.) 
Teeth, very broad strong base, median cone short, secondary cones small and 
numerous. Anterior surface of base only exposed -9 of an inch broad, under 
surface flat, front rounded on each side with median depression. Crown, median 
cone ‘3 of an inch in height, -25 inch wide at the base ; higher it becomes rapialy 
smaller and ends in a sharp point, surface broadly striated. Secondary denticles 
