Chelonoidis niger abingdonii (Günther 1877:85)

Syntypes (3): BMNH1947.3.4.39(formerly1876.6.21.38; vertebrae originally catalogued separately as 1876.6.21.44) and 1947.3.4.95-96 (formerly 1876.6.21.39–40); one syntype illustrated in Garman (1917:Pl. 40) .

Testudo ephippium Günther 1875:271

Holotype: NMSZ 1932.27.1 (formerly RSM 1932.27.1-12; parts of the same specimen; Herman et al. 1990:5; formerly RSM 1822.058, illustrated in Garman 1917:Pl. 39; photographed in Pritchard 1996:36 and Olson 2017:246–47). Type described in detail in Baur (1889). BMNH 1874.6.1.6 erroneously listed as a syntype in the BMNH catalogue.

Chelonoidis niger becki (Rothschild 1901:372)

Holotype: BMNH 1949.1.3.87.

Chelonoidis niger chathamensis (Van Denburgh 1907:4)

Holotype: CAS 8127 (Slevin & Leviton 1956:550; photographed in Pritchard 1996:32).

Chelonoidis niger darwini (Van Denburgh 1907:4)

Holotype: CAS 8108 (Slevin & Leviton 1956:550).

Geochelone (Geochelone) schweiggeri Fitzinger 1835:122

Holotype: Not located; originally alive in the MSW (Fitzinger 1853:403), apparently lost; possibly in NMW but not listed by Tiedemann & Häupl (1980) or Tiedemann et al. (1994).

Chelonoidis niger donfausti (Poulakakis, Edwards, & Caccone 2015:12)

Holotype: UWZM 32700 (sampled genetically in the original description).