XIV LIST OF WOODCUTS 



FIOCRE PAOB 



23. HeUx pomatia : Dissection from the right side, to show the 



digestive and reproductive systems . . . 113 



24. Section along the axis of the shell, transverse to 



the foot 122 



25. Astacus flv/matiUs : Transverse section through the abdomen 126 



26. Diagrammatic transverse section through the 



thorax 134 



27. Dissection of a male from the right side . . 138 



28. Pervplaneta americana : The head, front view . . . . 154 



29. The head, from behind 154 



80. Dissection of a male from the right side . . . 160 



31. AmpMoxus lanceolatits : A young specimen, seen from the 



right side 170 



32. Transverse section through the anterior part of 



the pharynx 185 



33. Transverse section through the posterior part of 



the pharynx 189 



34. Transverse section through the atrial pore. . . 191 



35. Transverse section through the anus . . . 192 



36. ScylKwm camcula : The skull and visceral skeleton from the 



right side 202 



37. Longitudinal and vertical section through the 



head and anterior part of the body . . . 218 



38. The venous system 222 



39. The branchial blood-vessels 227 



40. Transverse section through the posterior dorsal fin . 231 



41. Lepus ouniculus : The skull from the right side . . . . 268 



42. Dissection of a male from the left side . . . 300 



43. Longitudinal and vertical section of the brain . . 342 



44. Transverse section of the brain, passing through 



the third ventricle 350 



45. Transverse section of the brain, passing through 



the cerebellum 353 



46. Oallus bankwa : The left half of the skeleton, from the right 



side 356 



47. The skull, from the right side 364 



48. CoVumha Uvia : Dissection from the right side . . . 394 



