662 CLASS XVII. 



Sp. a. With fore feet tetradacti/lous, hind feet pentadactylous. Myrmecophaga 

 jiibata L., Buff. x. Tab. -29 (fig. deformed), Siippl. m. PI. 55 (scarcely 

 better), Blumenb. Ahlild. naturh. Gegenst. No. 82, Diet. imiv. d'Hist. nat., 

 Mammif. PL 16, fig. 2; this is the largest species, and attains nearly four 

 feet, besides the tail, which is more than 20 feet long. The hair is long, 

 especially on the back forwards and on the tail, and bristly; the colour is 

 grey with black throat and a triangular black spot ascending from this 

 obliquely over the shoulders; Brasil, Surinam. — Myrmecophaga tetradac- 

 tyla L. (and tridactyla ejusd., a species to be suppressed), Myiinecophaga 

 tamandua Cvv., Scheeb. Saugth. Tab. 68 (fig. of Maecgeaff), Eapp 1. 1. 

 Tab. II, fig. I (2d edit. Tab. 11, 6); smaller, the tail scaly at the extre- 

 mity ; variously coloured. (Temminck distinguishes this Brasilian species 

 as Myrmecophaga hivittata from the species from Surinam which he names 

 Myrmecophaga tamandua, yellowish-grey, one-coloured, with longer tail 

 and somewhat larger ears.) 



jS) With fore feet didactylous, hind feet tetradactylous. {^Snout shorter. 

 Coat thick, looolly). Sp. Myrmecophaga didactyla L., Scheeb. Saugth. 

 Tab. 66, Bldmenbach Aohild. No. 22, Gube. Icon., Mammif. PI. 35, fig. 

 2 ; this small species lives in Guiana and Surinam ; the ribs are very broad 

 and flat, and their posterior margin overlaps the anterior margin of the 

 succeeding rib. In this species the vessels of the fore limbs form plexuses ; 

 compare on their anatomical structure Daubenton, Buff. X. pp. 165 — 

 175, J. F. Meckel Archivf. d. Physiol, v, 1819, s. i — 67. 



Orycteroims Geoffr. St.-Hil. Incisors and canines none, 



7 — 7 5 — 5 



molars various according to age -; — 77 , in the aged - _ - , cylin- 

 drical, composed of vertical tubes, with flat crown. Body hairy. 

 Feet short, anterior tetradactylous, posterior pentadactylous, with 

 claws strong, fossorial, ungular. Ears elongate, acuminate. Tail 

 moderate, thick, hairy. 



Sp. Orycteropus capensis G^oyfr. , Myrmeeoplmga afra Pall., Myrmecophaga 

 capensis Gm., Gueein Iconogr., Mammif. PI. 35, fig. i, Pallas Observa- 

 tiones circa, Myrmecophagam africanam e Utteris CeV. P. Campee, excerpitfs 

 et illustratce. Act, Acad. Scientiar. Petropolit., pro anno i777> P* ^^Sj 

 Tab. IX. B ; comp, H. F. J^gee A nat. Untersuchungen des Orycteropus 

 capensis, Stuttgart, 1837, 4to (with a fig. copied in Rapp 1. 1. Tab. i). 

 This species, het aardvarhen of South Africa, lives in subterraneous cavities 

 and attains a length of 4 feet and more. In the skeleton itself there are 

 only four toes on the fore feet, whilst that of Myrmecophaga juhata has 

 five; the cervical vertebrae are particularly strong. (In Abyssinia also and 

 in Senegal similar animals occur which have been regarded as different 

 species. See Sundevall Velensh. Akad. Handl. 1842, pp. 236 — 242, Do- 

 VEENOY in GOEE. Revue et Magas. de Zool. 1852, pp. 581, 582, and Mem. 

 sur VOryct. duNil, &c. Ann. des Sc. nat. 3ifeme S^r. xix. pp.181 — 202, PI. 

 9, 10.) Compare on the structure of the teeth in Orycteropus F. Cuvieb 

 Des dents des Mamm. PI. 82, and Owen Odontogr. pp. 317 — 320, PI. 77, 78. 



