664 CLASS xvu. 



Sp. Chlamydophorus truncatus HABL. Ann. of the Lye. of New York, i. p. 

 -235, Tab. si, copied in the Ann. des Sc. nat. v. 1825, pp. 5 17, PI. i, 

 GUR. Iconogr., Mamm. PL 34, fig. 3 ; an animal of the size of the com- 

 mon mole, found in Chili, and which mostly keeps under ground. See the 

 skeleton described by YABRELL Zool. Journ. m. No. 12, 1828, p. 544, Tab. 

 16, 17, OKEN'S Isis, 1830, p. 926, Tab. ix. and especially a monograph by 

 HYRTL Chlamydophori truncati cum Dasypode gymnuro comparati Examen 

 anatom., in Denkschr. der Kais. Acad. d. Wissensch. IX. Wien, 1855, 

 s. i 66, with figures. 



Family XXI. Tardigrada ILLIG. Head truncated anteriorly, 

 flat. Legs, especially the anterior, very long. Claws incurved, 

 compressed. 



The sloths live in South America, principally in the large forests ; 

 they feed on the leaves of trees; the females bear only a single 

 young one, and carry it, as long as it continues to suck, on their 

 back 1 . 



Compare CUVIER sur VOsteologie des Paresseux, Ann. du Mus. v. pp. 

 189 215, PL 14 17; A. BRANTS Dissert, zool. inaug. de Tardigradis, 

 cum ii. Tab. L. B. 1828, 4to. 



Bradypus L. Body hairy. Molar teeth separate, cylindric. 

 Ears very short, concealed under hair. Fore feet tridactylous or 

 didactylous, hind feet tridactylous, with toes conjoined as far as 

 the claws. Two pectoral mammas. Tail very short, or none. 



Bradypus ILLIG., Adieus F. Guv. Molars (or in younger 

 Q \ 4 4 \ 



individuals - -) with the first small. Fore feet tridactylous, 

 o o/ 



longer than hind feet. Tail very short. 



Sp. Bradypus cuculliger WAGL., Bradypus gularis EUEPPELL Mm. Senclc. 

 m. s. 138, 139, Taf. XL, Cuv. R. Ani., ed. ill., Mamm. PL 70; Ai d dos 

 brule DAUBENTON in BUFF. xm. PL 32; Surinam, Guiana; Bradypus 

 pallidus WAGN., Bradypus tridactylus MAXIM. Abb. zur Naturgesch. Brasil. 

 2te Lief. (The name of Brad, tridactylus L. is merely given arbitrarily 

 to one of these two species, since it rests upon the opinion that there is 

 only one species with 3 toes on the fore feet.) Bradypus torquatus ILLIG., 

 MAXIM. Abb. zur Naturgesch. Bras. 6te Lief., GUER. Iconogr., Mammif. 

 PL -23, fig. i; both species from the North and East of Brasil; the last 

 also, though rare, in Peru; Bradypus infuscatus WAGL. North western 



1 Interesting particulars on the mode of life and properties of the sloths have 

 been given by HUMBOLDT and TSCHUDI. See TSCHUDI Fauna Peruana, i. pp. 



202 205. 



