ILLUSTRATIONS. 



PAGE 



1. The Green water-frog, Sana es- 



culenta, L. . . . .4 



2. The Brown grass-frog, Ranatem- 



poraria, L. . . . .8 



3. Femur of Sana esculenta . . 16 



4. Vertebrae of do. . . .17 



5. Vertebral column of do. . .18 



6. 7. Section through a vertebra of 



Sana ezculenta . . .20 



8, 9. Uroetyle of Rama esculenta . 21 



10-14. Sknll of do. . 22, 23, 25, 28 



15. Xasal Cartilages of frog . . 29 



16, 17. Skull of Sana esculenta 29, 30 



18. Origin of suspensory cartilage 



from the skull . . -32 



19, 20. Skull of Sana esculenta 32,33 



21. Mandible of Sana esculen ta . 34 



22. Hyoid of Rana esculenta . 35 



23. Omosternum of Sana esculent* 36 



24. Shoulder-girdle and sternum of 



do. . . .36 



25. Shoulder-girdle of the frog . 37 



26. 27. Suprascapula of Rana es- 



culenta . . . .38 

 28.- Left scapula of Rana esculenta 38 



29. Scapula seen from behind . 38 



30. Left coracoid . . . -39 



31. Clavicle of the left side . . 39 



32. Right shoulder-girdle of Sana 



escnlenta . . . .40 



33. Hinder border of the scapula 



and coracoid . . .40 



34. Clavicular cartilage of Rana 



esculenta . . . .40 



35. Hnmerus of Sana esculenta 



(female) . . . -41 



36. Do. (male) . . . .41 

 37- Do. (female) . . . .41 

 35. Eadio-ulnar of Rana esculenta 43 

 39, 40. Bones of the forearm and 



hand of Rana esculenta 44, 46 

 41, 42. Pelvis of Rana esculenta . 48 



43. Horizontal section through the 



iliac bones, etc. . . - 49 



44. Femur of Rana esculenta . 49 



45. Tibio-fibnla of do. . . .50 



46. Section of the tibio-fibula . 50 



47. Right foot of Rana esculent a . 51 

 48-50. Eye-muscles of do. . 55, 56 

 51. Skull and orbital cavities of 



Rana esculenta . 



FIGTTBB PAGE 



52. M. levator bulbi of Sana e*- 



culenta . . . -57 



53. Eye-muscles of Rana esculenta 58 



54. Facial muscles of do. . . 59 



55. Muscles of the back and shoul- 



der 60 



56. 57- Muscles of the lower jaw of 



Rana esculenta . . 61, 62 



58. Muscles of the throat, el- 



and abdomen of do. . . 63 



59. Muscles of the hyoid bone and 



the tongue of do. . 64 



60. Do. (from below) . . .65 



61. Do. (from right side) . . 66 



62. Muscles of the throat, chest, 



and belly of Rana esculenta 68 



63. Muscles of trunk of Rana es- 



culenta (from the right side) 69 



64. Second layer of abdominal mus- 



cles of Sana aculenta, from 

 right side and below . . 7 



65. M. obliquus intern us . 7 1 



66. Muscles of the back and shoul- 



der blade .... 72 

 67- Muscles of the back and pelvic 



girdle of Rana esculenta . 74 



68. Muscles of the shoulder, from 



below . . . . .77 



69. Muscles of the right shoulder 



and upper arm . . .7? 



70. Eight shoulder, from below . 79 



71. Muscles of the back and shoul- 



der 79 



72. Muscles of the chest, throat, 



and belly of Rana esculenta 81 



73. Muscle of "right shoulder and 



upper arm . . . .83 



74. Muscles of the right arm of 



Sana esculenta . . .84 



75. Do. (deep layer) . . -85 



76. Muscles of forearm of Sana es- 



culenta .... 86 



77. Muscles of hand of Rana es- 



culenta, volar surface . . 88 



78. Second layer of muscles on 



volar surface of hand of 

 Rana esculenta . . .88 



79. Muscles of hand of Rana et- 



citlenta . . . 9- 



80. Muscles of left thigh of do. . 95 



81. 82. Do. (ventral surface) . 98, 99 



