Secondary formations, mammalian remains in, i. 169
Secretary bird, of Africa, figure of, i. 261
ii. [346]
Seemann, Dr., on protective resemblance of sloths, ii. [24]
Seisura, ii. [270]
Selache, ii. [460]
Selasphorus, ii. [108]
Selenidera, ii. [307]
Selenophorus, ii. [490]
Seleucides, ii. [275]