412 PETKIFACTIONS AND THEIR TEACHINGS. CHAP. V. 



within the cases, indicating the geological habitat of the 

 respective specimens." Mr. Kdnig's Synopsis. 



The upright divisions of the glass-frames are numbered 

 and labelled with the names of the tribes and families, as 

 shown in p. 416. 



A. [1 to 5.]. This Case is chiefly devoted to the Ganoid 

 fishes. It contains beautiful specimens of the Devonian, or 

 Old Red Sandstone genera (Cephalaspides), and of the Lepi- 

 doids of the Oolite, Wealden, &c. 



B. [6 to 13] contains a rich assemblage of Lepidoids, 

 Sauroids, and Ccelacanthians. Some splendid specimens 

 of Rhizodus, Holoptychius, and Macropoma, are especially 

 worthy of attention j the former, are from the Carboniferous 

 strata of Burdie House, the latter from the Chalk near 

 Lewes ; in the division [13], there is a large collection of 

 coprolites of these fishes. Below the last-named specimens 

 there are slabs of Old Red Sandstone, from Dura Den, in 

 Fifeshire, with groups of fishes of the genus Holoptychius. 



The specimen of Holoptychius nobilissimus, on the ledge 

 below the Macropoma, is a splendid fossil from the Old Red 

 Sandstone of Clashbinnie, near Perth, by the Rev. J. Noble. 

 There is, likewise, a rare specimen of the same genus from 

 Lethenbar, Scotland. 



C. [15 to 22.] A beautiful collection of Ganoid, Ctenoid, 

 and Cycloid fishes : many of these are from the Chalk of 

 Sussex ; others are from the tertiary strata of Monte Bolca, 

 and among them are teeth, &c. of Pycnodus, Spherodus, and 

 Placodus, from the Oolite. Fishes of the Perch Family ; 

 Sparoids, or Breams ; Cottoids, or Bull-heads ; Goboids ; 

 Chcetodons ; Scomheroids, &c. 



D. [23 to 27] contains many fine examples of various 

 species and genera of Cycloid fishes, comprising Esocids, 

 Scomberoids, Clupeoids, Cyprinoids, &c. In this Case are 

 some remarkable uncompressed fishes of the Salmon family, 

 from the chalk of Lewes, in Sussex. 



In the division at the end (27), is a specimen of the only 

 known existing species of fish that has been found fossil, 

 namely, the Angmarset (Mallotus villosus), which occurs in 

 nodules of marl of recent formation, on the West Coast of 

 Greenland. 



E. This Case (on the right hand of the entrance to Room 

 VI.) is filled with a very good collection of crania, teeth, and 



