LIST OF ILLUSTRATIONS. 



FIG. 



38. 

 39. 

 40. 

 41. 

 42. 

 43. 

 44. 

 45. 

 46. 

 47. 

 48. 

 49. 

 50. 

 51. 

 52. 

 53. 

 54. 

 55. 

 56. 

 57. 

 58. 



II. H. Traquair 



Gyroptychius, restored (after Pander), Devonian 



Osteolepis ditto ditto ditto 



Glyptolcemus ditto (after Huxley) ditto 



Undlna Kohleri (restored) 



Macropoma, restored (after Huxley) . 



Scales of Amblypterus striatus, Carboniferous 



Platysomus striatus, Magnesian L. (restoration after Dr 



Eurynotus crenatus, Carboniferous ; ditto 



Cheirodus granulosus, Coal-measures ; ditto 



PaUeoniscus macropom us, Ag. Kupferscbiefer ; ditto 



Stemmatodus {Pycnodus) rhombus, Oolite . , . . . 



Oaturus furcatus, Upper White Jura, Solenhof en 



Leptolepis sprattiformis, ditto ditto .... 



The Common Perch, Percaflwviatilis (living in freshwatcrs of Europe, &c. 

 Skeleton of same ......... 



Cycloid and Ctenoid scales ........ 



Beryx Leivesiensis, Chalk, Sussex ...... 



Scmiophorus velicans, Ag. Eocene, Monte Bolca .... 



Exoccetus volitans (living ; Mediterranean Sea) .... 



The Common Pike, Esox lucius (living; fresh waters of Europe, &c.) 

 The Common Herring, Clupea harengus (living ; North Atlantic) . 



PAGE 



25 

 25 

 25 

 26 

 27 

 27 

 28 

 28 

 29 

 29 

 30 

 30 

 30 

 ) 31 

 32 

 32 

 33 

 35 

 39 

 39 

 41 



Note.— Figs. 2, 3, 4, 5, 8, 19, 20, 22, 23, 28, 30, 41, 42 have been engraved expressly for this 

 guide. 



Figs. 35, 38, 39, and 40 have been presented by H. M. Stationery Office (from Decade X. of 

 the Memoirs of the Geological Survey of the United Kingdom). 



Figs. 27, 29, 31, and 36 have been presented by Mr. John Murray. 



Figs. 9, 10, 12, 14, 18, and 24 have been presented by Dr. H. "Woodward. 



The remaining 31 illustrations have been supplied by Messrs. A. and C. Black ; Messrs. 

 William Blackwood and Sons, Messrs. Cassell and Co., Messrs. C. Griffin and Co., and 

 Messrs. Macmillan and Co., from the various works published by them. 



