AUiVLTDX. 
59 
Aspidolepis steinlai, H. B. Geinitz, ibid. p. 40, pi. ii. figs. 3-6 ; 
A. Fritsch, Ropt. u. Fische bbhm. Kreideform. (1878), 
p. 35, fig. 60. 
Oyclolepis ayassizi, H. B. Geinitz, ibid. p. 39, pi. ii. figs. 1, 2 
(= Aulolepis reussi, H. B. Geinitz, (Juadersandsteingeb. 
1849, p. 86); A Fritsch, op. cit. (1878), p. 31, fig. 59. 
Hemicyclus strehlensis, H. B. Geinitz, ibid. p. 44, pi. iii. fig. 19. 
Hemilampronites steinlai, H. B. Geinitz, ibid. p. 48, pi. iii. figs. 3, 4. 
Osmerolepis reticulata, A. Fritsch, Archiv naturw. Laudesdurchf. 
Biihmen, vol. ix., Geol. no. 1 (1893), p. 70, fig. 38. 
Indeterminable cycloid scales have also been described thus : — 
Cycloides indsus, T. C. Winkler, Archiv. Mus. Teyler, vol. iv. 
(1876), p. 3, pi. i. fig. 2.— Lower Eocene (Heorsian) ; 
Limbourg, Bolgium. 
Lyrolepis ouucasicus, G. Romanovsky, \ erhandl. russ.-kais. Min. 
Gos. [2] vol. xxii. (18S6), p. 305.— Upper Cretaceous; 
Caucasus. 
Family ALBULIDzE. 
Supraoccipital bone not prominent, but sometimos separating 
parietals in the middle line ; sipiamosals suturally united^ with 
parietals, and completely covering the otic region, except behind ; 
snout not much produced ; cheek-plates well developed. Mandibular 
suspensorium much inclined forwards and gape of mouth small ; 
premaxilla small and maxilla relatively large, both entering tho 
u pper border of the mouth ; marginal dentition feeble or absent. 
Opercular apparatus complete, with tendency to reduction ot 
branchiostegal rays, and no gular plate. Yertebral centra well 
ossified, none with transverse processes ; ribs nearly encircling the 
abdominal cavity ; hmmal arches more or less fused at tho base of 
the tail. Fin-fulcra absent. Dorsal fin nearly median, sometimes 
much extended ; no adipose dorsal. Scalos thin, cycloidal and 
deeply imbricating, none extending over tho head ; lateral line 
conspicuous. 
Synopsis of Oenera. 
I. Dorsal fin short-based. 
Parasphenoid, entopterygoid, and tongue with 
large crushing teeth ; premaxilla, vomer, 
and palatines with minute pointed teeth ; 
parietal bones meeting in middle line Albula (p. 60). 
