Errata Et Addenda. Page 64, in the table under Aquila audax, for 8.20 read 8.02. 64, " " " " and p. 65, line 9, for 22.03 read 21.85. 66, " 8 from bottom, for proximal read procnemial. 69, " 4, for ridges read calcaneal ridges. 70, " 3 from bottom, for shorter read stouter. 75, in the table, for Metatarsus read Fibula, and insert “5–6. Metatarsus of H. moorei.” 76, " " transpose Weight and Bulk. 85, line 14, for curved read convex. 130, " 13 from bottom, add “He has since repeated this error in his ‘Catalogue,’ by stating (p. 11) that Certhiparus novŒ-zealandiŒ inhabits both islands.” 183, " 3, for January, 1874, read July, 1873. 319, " 22, for 6,000 read 1,000. 320, " 15, for Reid's read Ross'. 323, in the second table, for Liang read Leaning. 331, line 14, for of read by. 334, " 22, for Liodon read Leiodon; also on pp. 336, 338. 350, for Mauisaurus latibrachialis read M. brachiolatus. 385, line 13 from bottom, omit the second “by.” xxxvii., in the table, line 8, for the first “munga” read manga; for the second read mangu. xliii., line 19 from bottom, omit Mu. xliii., " 10 " " under Kau add Mu. lii., " 32, for dun read dan. liv., " 12, for of read on. lv., " 8 from bottom, for ubah read uba. lvi., " 12 and 19, for Crawford read Crawfurd. lxi., " 26, for karana read karaua. lxvi.," 5 from bottom, for Garlandinea read Guillandina. lxxiii., " 12 " " for oullana read orellana.