Index 



357 



Recessus cavi tympani, 149 

 Recessus scalas tympani, 149 

 Rectum, 155 



transsection of (fig.), 186 

 Rectus muscles of eye, 146 



development of, 332 

 Respiratory organs, 197, 200; (fig.) 



198 



Rete Malpighii, 48 

 Retina, 147 



development of, 321 

 Retractor oculi muscle, 146 

 Ribs, 77 



Rima auditoria, 148 

 Ring muscle, 157 

 Roof of mouth, 165 



covering of (fig.), 1 66 



glands of, 167 



papillas of, 167 



Saccus naso-lachrymalis, 146 

 Scales, development of, 333 

 Sclera, 146 

 Scutes, 47 



Semicircular canals, 149 

 Semilunar valves of stomach, 154 

 Sexual characteristics, 19 

 Sexual maturity, 17 

 Shell membrane, 228 

 Shell-tooth, 334 

 Sinus venosus, 202 

 Size of alligator, 16 



at hatching, 16 

 Skeleton, 46, 50 

 Skin, 87 

 Skull, 58 



dorsal aspect of, 59 



lateral aspect of, 67 



posterior aspect of, 70 



sagittal section of, 72 



ventral aspect of, 63 

 Smaller part of stomach, 153 

 Small intestine, 154 



histology of, 179, 186 



mucosa of (fig.), 184 



transsection of (figs.), 181, 182, 



183, 185 



Smithsonian Institution, 226, 227 

 Somatapleure, 279 

 Somites, 251, 252, 256, 266, 267, 



274,282,292,300 

 Special sense organs, 144 



Spinal cord, 131, 290, 291, 298, 



development of, 298 

 Spinal ganglion, development of, 



299,311, 312; 314, 331 



Spinal nerves, 138 

 Splanchnopleure, 279 

 Stenosauria, i 

 Sternum, 77, 80 

 Stomach, 152, 153 



development of, 305, 326 



glands of, 177, 179 



histology of, 174 



transsection of (fig.), 176 

 Stomodasum, 317, 322 

 Stratum corneum, 48 

 Supratemporal fossa, 57 

 Sympathetic nerves, 314, 325, 337 

 Systemic arch, 203 



Tail, 317, 318, 329 



Tailfold, 274 



Tapetum lucidum, 146 



Tarsus, 88 



Taste papillae, 165 



Tear dots, 145 



Teeth, 47, 64 



Teleosauria, I 



Temperature range in swamps, 



23 



Tendon Achilles, 126, 127 



Testes, 194 



Thoracic ribs, 78 



Thyroid gland, development of, 



78, 269 

 Tomistoma schlegeli, 2 



skeleton of, 51 

 Tongue, 150 



covering of (fig.), 160, 161 



development of, 333 



epithelium of, 161 



glands of, 160, 162, 163, 164 



histology of, 157 



papillas of, 160, 165 

 Tooth, development of, 333 



socket of, 64 



structure of, 65 

 Torsion of body, 274, 336 

 Trachea, 197 



development of, 324, 330 



rings of, 198, 199 

 Trigeminal foramen, 78 



