59 
ALBrilD^. 
Aspidolepis sUinlai^ H. B. Geiuitz, ibid. p. 40, pi. ii. figs. 3-6 : 
A. Fritsch, Eept, u. Fisclie bohm. Kreideform. (1878), 
p. 35, fig. 60. 
Cpclolepis agassizi, H. B. Geinitz, ibid. p. 39, ^fi- ii- figs. 1, 2 
(= Aidolepis reussi, H. B. Geinitz, Quadersandsteingeb. 
1849, p. 86); A Fritsch, op. cit. (1878), p. 34, fig. 59. 
Ilemicyclus strelilensis, H. B. Geinitz, ibid. p. 44, pi. iii. fig. 19. 
-^.27vyd!/.3 Hemilampronites steinlai, H. B. Geinitz, ibid. p. 48, pi. iii. figs. 3,4. 
p /ft Osmerolepis reticulata, A. Fritsch, Archiv natnrw. Landesdnrchf. 
' ) Bohmen, vol. ix., Geol. no. 1 (1893), p. 70, fig. 38. 
Indeterminable cvcloid scales have also been described thus :— 
Cycloides rncisus, T. C. Winkler, Archiv. Wus. Teyler, vol. iv. 
(1876), p. 3, pi. i. fig. 2.—Lower Eocene (Heersian); 
Limbourg, Belgium. 
Lyrolepis caucasicus, G. Bomanovsky, Terhandl. russ.-kais. Min. 
Ges. [2] vol. xxii. (1886), p. 305.|—L^pper Cretaceous; 
Caucasus, olcc. /h / 33^^ 
‘ Aid U^. c/t, 
, 3 /9. ZU/• 
r Family ALBULID^. - ?7/ ' 
Supraoccipital bone not prominent, but sometimes separating 
parietals in the middle line; squamosals 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 the 
upper border of the mouth; marginal dentition feeble or absent. 
Opercular apparatus complete, with tendency to reduction of 
branchiostegal rays, and no gular plate. Yertebral centra well 
ossified, none with transverse processes ; ribs nearly encircling the 
abdominal cavity ; hgemal arches more or less fused at the base of 
the tail. Fiu-fulcra absent. Dorsal fin nearly median, sometimes 
much extended; no adipose dorsal. Scales thiu, cycloidal and 
deeply imbricating, none extending over the head; lateral line 
conspicuous. 
Synopsis of Genera. 
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). 
