220 
SELACniI. 
41201. Five more rounded teeth, with marginal concentric wrinkles; 
Lower Carboniferous Limestone, Tournai, Belgium. 
Purchased, 18G8. 
P. 2619, P. 2646. About sixty tooth of similar form, but with 
smooth coronal surface and having the middle of the 
crown raised into a largo rounded boss ; Lower Car- 
boniferous Limestone, Armagh. Enniskillen Coll. 
P. 2912. Smaller tooth with a low lateral boss in addition to the 
median, described as Lojthotlus gihberultts, Agass. sp., by 
J. W. Davis, Trans. Iloy. Dublin Soc. [2J vol. i. p. 405, 
pi. li. fig. 19 ; Armagh. Enniskillen Coll. 
P. 2629. Si.x similar teeth ; 
Armagh. 
Enniskillen Coll. 
P. 2630-1. Two very largo teeth, with delicate marginal concentric 
wrinkles, and with the sharp longitudinal coronal ridge 
raised into a pointed median apex, forming the type 
W. Davis, loc. cit . ; 
Enniskillen Coll. 
Enniskillen Coll. 
Fjgerton Coll. 
Purchased, 1847. 
specimens of I/elodus crassns, J. 
Armagh. 
P. 2632. Twelve similar teeth ; Armagh. 
P. 1465. Three similar tooth ; Armagh. 
20824. Imperfect tooth ; Bristol. 
P. 4914. Nearly similar tooth; Yorcdalo Books, Wensleydale, 
Yorkshire. Horne Coll. 
P. 2611. Tooth with concentric marginal wrinkles and the longi- 
tudinal ridge low and sharp, though ri.sing to a median 
eminence, forming the typo specimen of Helodme.vpansus, 
J. W. Davis, loe. cit . ; Armagh. Enniskillen Coll. 
P. 5862. Four teeth of the same kind, but less symmetrical ; 
Armagh. Enniskillen Coll. 
P. 2654 a. Three teeth, nearly similar, but without the median 
eminence ; Armagh. Enniskillen Coll. 
P. 2653. Three similar teeth ; Upper Carboniferous Limestone, 
Eichmond, Yorkshire. Enniskillen Coll. 
P. 2651. Tooth of the same form, though slightly curved, resembling 
some of the teeth included by Agassiz in Chomatodvs 
linearis, and described under tins name by J. W. Davis, 
Trans. Boy. Dublin Soc. [2] vol. i. p. .508, pi. Ixi. fig. 1 ; 
Bristol. Fmniskillen Coll. 
