376 On the Fossil Fishes of the Carboniferous Limestone Series of Great Britain. 
in section. The beautiful series of C. wachsmuthi approach nearer perhaps than 
either of the others, the base, as represented in 9p. cit., fig. 3b, and the series of lateral 
denticles or cones approach very nearly to the specimen from Tynan, but in 
proportion to the width of the base the denticles are larger, whilst the central one 
is considerably shorter in proportion to its diameter. 
Formation and locality : Mountain Limestone, Armagh, Tynan, in Ireland; also in Derbyshire, at 
Lowick, Northumberland, and Brigsteer near Kendal, in each case rare (M‘Coy) ; Upper Wensleydale. 
Lower Limestone, Howrat, Dalry, West of Scotland (Young and Armstrong.) 
Kx coll. Karl of Enniskillen. 
Cladodus curvus, Davis. 
(Pl. XLIX., fig. 14.) 
Teeth, small or medium size, base not well exposed but apparently rather slender 
for the size and strength of the coronal superstructure. The latter is formed by 
three large cones, the central one is the largest, nearly half an inch in length and 
about equal to the breadth of the base, it has a double curvature, first bending 
forwards and nearer the apex curving round in a lateral direction to the left : the 
cone is strong, rotund, 15 inch in diameter near the basal extremity, gradually 
contracting upwards and terminating in an acute point. The surface is deeply 
striated longitudinally, the ridges well defined with an acuminate edge separated 
by a wide sulcus. The ridges divide but without anastomosis. ‘The lateral cones 
are unequal in size, the one forming the right extremity of the tooth being nearly 
equal in size to the central one, whilst the opposite one is smaller; the latter is 
straight half the length of the central cone, and extends at an angle of 45° from 
the base, it is striated similarly to the central one. The right lateral cone is only 
slightly smaller than the central one, it is straight and rises almost vertically from 
the base. It is separated from the central cone by a larger interspace, on which 
there may have been located a small denticle but which is not now present, than 
the opposite one. The crown is separated from the base by a transverse sulcus and 
ridge extending across the tooth. 
The peculiar want of symmetry in the arrangement of the cones of this species 
renders it quite distinct from any other. It is placed in the genus provisionally 
because the base being hidden by the matrix it is impossible to form a safe opinion 
as to whether it possesses the broadly expanded base characteristic of the genus. 
Formation and locality : Mountain Limestone, Armagh. 
Ex coll. Karl of Enniskillen. 
Cladodus destructor, Davis. 
(Pl. XLIX., fig. 15.) 
Teeth, of large size, 1°25 inches across the base and 1 inch in height, strong and 
robust. Base large and thick, elliptical in outline, °6 inch wide, extending laterally 
