Original description as follows: "Ae. lentus is remarkable from its short and massive feet.
| Length of tarso-metatarsus | 360 | mm. | |
| Width of proximal end | 150 | " | |
| Circumference of shaft | 170 | " | |
| Width of shaft | 68 | " | " |
Habitat: Madagascar.
AEPYORNIS MULLERI M.-E. & GRAND.
Aepyornis mulleri Milne-Edwards & Grandidier, C.R. CXVII, pp. 124-125 (1894).
The original description commences: "The new species which we owe to the researches of M. G. Muller, and which we shall name Ae. mulleri, is smaller. Nevertheless, it is superior in size to Ae. hildebrandti, described by M. Burckhardt, which also came from Antsirabé. We possess the almost complete skeleton of this bird, the skull, mandible, vertebrae, ribs, sternum, a part of the pelvis, the leg bones, and a few phalanges of the pes; so that we can now exactly define the position and affinities of the genus Aepyornis." Then follows the diagnosis of the family, which I have given before.
Habitat: Central Madagascar.
AEPYORNIS MODESTUS M.-E. & GRAND.
Aepyornis modestus Milne-Edwards & Grandidier, Ann. Sci. Nat. (5) XII, p. 189 (1869).