SEMIOXOTlDiE. 
57 
38660. Several portions of sandstone with remains chiefly of this 
species ; Stuttgart. Purchased , 1864. 
2845. Two specimens exhibiting portions of the squamation and 
the median fins of a large individual; Stuttgart. 
Van Breda Coll. 
Semionotus brodiei, Newton. 
1887. Semionotus brodiei, E. T. Newton, Quart. Journ. Geol. Soc. 
vol. xliii. p. 539, pi. xxii. figs. 1-7. 
Type. Imperfect fishes ; collection of Rev. P. B. Brodie. 
A small imperfectly known species, attaining a length of about 
•0*1. The maximum depth of the trunk equalling nearly half its 
length from the pectoral arch to the base of the caudal fin, and the 
caudal pedicle slender. Pelvic fins arising midway between the 
pectorals and anal, immediately in advance of the dorsal. Scales 
almost entirely smooth, a few with feeble traces of oblique ridges ; 
those of the anterior part of the flank serrated and about twice as 
deep as broad. 
The apparently great depth of the principal flank-scales in this 
species is probably exaggerated by crushing in the imperfect speci¬ 
mens hitherto discovered. 
Form. Sf Loc. Upper Keuper : Warwickshire. 
P. 5207. Imperfect distorted trunk, noticed and scales figured loc. 
cit. p. 537, pi. xxii. fig. 7 ; Shrewley. 
Presented by Rev. P. B. Brodie , 1886. 
Semionotus altolepis, Deecke. 
1889. Semionotus altolepis, W. Deecke, Palseontogr. vol. xxxv, p. 120, 
pi. vi. fig. 10. 
Type. Nearly complete fish. 
A species attaining a length of about 0-12. Trunk regularly 
fusiform, the depth of the caudal pedicle about one-third the 
maximum depth of the abdominal region. Length of head with 
opercular apparatus nearly equal to the maximum depth of the 
trunk, and somewhat exceeding one-quarter of the total length of 
the fish; external bones ornamented with tubercles and rugse. 
Dorsal fin arising about the middle of the back, and the anal fin 
arising opposite its hinder extremity. Scales smooth, those of the 
flank in part about twice as deep as broad, and all the principal 
scales serrated. 
Form. Sf Loc. Muschelkalk : Perledo, Como, Italy. 
Not represented in the Collection. 
