yb, 
ais 
. External surface of a scale from the commencement of the tail pedicle; magnified four 
. Internal surface of a similar scale, 
. One of the V-shaped ridge-scales of the tail. 
. Scales from the side of the caudal body-prolongation. 
. Inner aspect of similar scales, 
. Internal surface of maxilla of Zwrynotus crenatus ; magnified two diameters. From 
. Internal surface of maxilla of an Hurynotus (E. fimbriatus ?); natural size. From South 
. Outer, or sculptured surface of the maxilla of an Hurynotus, from a disjointed speci- 
. Internal surface of a similar maxilla; enlarged one-half. From the same locality. 
. Palatal teeth of Hurynotus, showing the worn or “dimpled” aspect, magnified four — 
. Mesolepis scalaris, Young; natural size. From a specimen from Fenton, Staffordshire, 
. External surface of a scale from the flank of Mesolepis scalaris ; magnified two diameters. 
. Internal aspect of a scale from the flank of the type specimen of Mesolepis Wardi, 
. Internal surface of a scale from the same specimen, situated opposite the origin of the 
. Internal surface of another scale situated near the last; magnified three diameters. 
. Sketch of maxilla and mandible of a specimen of Mesolepis, in the collection of Dr 
. Three teeth from the qnasatble of the same specimen; magnified twenty diameters, 
. Mandibular teeth of Mesolepis micropterus, Traq.; magnified eighteen diameters. 
. Restored outline of the head and external cranial bones of Mesolepis. 
. Head of Zurysomus macrurus, Ag. sp.; natural size. From a specimen from Midderidge, 
. Three mandibular teeth in the same specimen; magnified five diameters. 
. Outline of the bones of the head as exhibited in the only known specimen of War- 
. Scales from the lateral line of Wardichthys cyclosoma ; magnified two diameters. 
. Internal surface of a flank scale of Wardichthys; magnified two diameters, 
. Several scales from near the ventral margin of Wardichthys; magnified two 
RAMSAY H. TRAQUAIR ON THE 
diameters. Burdiehouse. 
Burdiehouse. 
Queensferry. 
Oral aspect of a pterygoid bone, found lying on the same slab with the last, and along 
with numerous scales of Zurynotus ; natural size. 
men; natural size. From Loanhead. 
diameters. From the same locality, 
Sketch of the left clavicle of Lurynotus. 
Reduced outline of the specimen of Benedenius Deneensis, figured in Prof. De Koninck’s 
“ Faune de calcaire carbonifére de la Belgique,” pl. ii. 
Pirate IV. 
in the collection of J. Ward, Esq., F.G.S. Longton. 
Young; magnified three diameters. 
anal fin; magnified three diameters. 
Rankin of Carluke ; magnified two diameters. 
in the Museum of Science and Art, Edinburgh. 
dichthys cyclosoma, Traq. 
diameters, 
