LIST OF WOODCUTS. 
Page 
. 29. Hacrosemius latiusculus. Head and opercular 
apparatus .163 
30. Mesturus leedsi. Bones of cranial roof .... 192 
31. Ccelodus gyrodoides. Vomerine dentition .... 255 
32. Coccodus armatus. Left clavicle .267 
33. Eugnathus orthostoiims. Restoration .288 
34. -orthostomus. Left mandibular ramus . . . 293 
35. Heterolepidotus typicus. Head-bones .309 
36. Caturus furcatus. Restoration .331 
37. Amia calva. Skeleton ..368 
38. -calva. Head and opercular apparatus . . . 369 
39. -calva. Leftpterygo-palatine arcade .... 369 
40. Hypsocormus insignis. Restoration .393 
41. Protosphynena. Rostra . 403 
42. Aspidorliynchus acutirostris. Restoration .... 418 
43. Lepidosteus viridis. Head and opercular apparatus 441 
44. Pholidophorus macroeephalus. Head .448 
45. Leptolepis dubius. Restoration .510 
