212 
ACTINOPTER YGII. 
P. 3745. Fragmentary right splenial bone; Soleure. 
Enniskillen Coll. 
The following portions of dentition appear to belong to the genus 
Mesoclon, but are specifically undetermined:— 
1370 a (Sloane Catalogue). Fragment of splenial dentition; Great 
Oolite, Witney, Oxfordshire. Sloane Coll. 
P. 3737. Fragment of splenial labelled “ Gt. Oolite, Gibraltar, 
near Oxford,” but much resembling the Portlandian 
Mesoclon clctmoni. Enniskillen Coll. 
36141. Imperfect left splenial; Forest Marble, Atford, near Bath. 
Purchased , 1859 . 
36145. Well-preserved left splenial dentition, with only two com¬ 
plete outer series of teeth; Forest Marble, Stanton, 
Gloucestershire. Cunnington Coll. 
46338. Imperfect left splenial with very smooth teeth; Forest 
Marble, Atford, near Bath. Cunnington Coll. 
47139. Portion of small vomerine dentition; Great Oolite, Buttock’s 
Booth, Northampton. Sharp Coll. 
40353. Fine vomer with remarkably rounded teeth, the inner 
lateral series comparatively small and with minute inter¬ 
calary teeth (PI. XVII. fig. 1); Great Oolite, Caen, 
Normandy. Purchased, 1867. 
22659. Portion of large right splenial dentition ; Coral Bag, Schnait- 
heim, Wiirtemherg. Purchased, 1848 . 
41869. Imperfect vomer with well-spaced teeth, those of the median 
series not much wider than long; Kimmeridge Clay, Wey- 
m outh. Purchased , 1869. 
P. 6169. Imperfect left splenial, figured by B. Damon, Geol. Wey¬ 
mouth, ed. 2 ( 1880 ), Suppl. pi. ix. fig. 11; Kimmeridge 
Clay, Weymouth. Damon Coll. 
P. 4391. Portion of small splenial; Kimmeridgian, Soleure, Switzer¬ 
land. Enniskillen Coll. 
30870. Portion of vomer with closely arranged teeth, those of the 
median series nearly twice as broad as long; Portland 
Stone, Bidgway, near Weymouth. Purchased , 1856 . 
21349. Left splenial dentition, with principal teeth much elongated 
transversely ; Purbeck Beds, Swanage. Purchased , 1847 . 
