-
Amphibien des
Berliner Zoologischens Museums (Leposoma dispar,
Monopeltis (
Phractogonus) jugularis,
Typhlops depressus,
Leptocalamus trilineatus,
Xenodon punctatus...
-
Proceedings of the
Academy of
Natural Sciences of
Philadelphia 6: 62–65. (
Phractogonus galeatus, new species, pp. 62–63, four
unnumbered figures). Hallowell...
- da
Academia Real das
Sciencias de
Lisboa 4: 247–253. ("Lepidosternon (
Phractogonus) Anchietae", new species, pp. 247–248,
Figures 1–4). (in French). Boulenger...
- Angola".
Proceedings of the
Zoological Society of
London 1876: 678–679. (
Phractogonus scalper, new species, pp. 678–679, illustration,
three views of head)...
