392 MYKMECOPHAGID^B. 



2. Tamandua longicaudata. (Yellow Tamandua.) B.M. 



Uniform light ochraceous, with a paler vertebral line ; tail nearly 

 double the length of the body, its terminal half covered with small 

 scales and a few scattered black hairs ; ears large, rounded, about 

 one-third the length of the head ; no shoulder-streak. 



Myrmecophaga longicaudata, Wagner ; Tui-ner, P. Z. 8. 1851, p. 218 ; 



'Biirm. Thier. Bras. p. 304. 

 Tamandua longicaudata, Gray, P. Z. S. 1865, p. 384. 



Hab. ? (B. M. and Zool. Soc). 



3. CYCLOTHUEUS. 



Toes 2.5; the outer front one much the largest. Pterygoid bones 

 meeting, presenting two long, parallel, and little-prominent crests, 

 and much extended backward, and not forming a canal. Skull short, 

 broad ; nose moderate, slender, shorter than the brain-case. The 

 ribs ai-e very broad, dilated, forming a solid armour to the chest, and 

 overlapping each other (see Eapp, t. 5. f. 3, 4, 5). 



Cyclotluu-us, Gra)/, List Mamm. B. M. ; P. Z. S. 1865, p. 384 ; Turner, 

 P. Z. 6: 1851, p. 218. 



1. Cyclothurus didactylus. B.M. 



Fulvous, blackish-washed ; feet and tail grey ; longer hairs with 

 minute black tips. 



Myrmecophaga didactyla, Litm. S. N. i. p. 51 ; Bapp, Edent. p. 15, 

 t. 5. f. 3-6 (skiill) ; Blainv. Osteogr. t. (skeleton) ; Massmann, De- 

 script. 182.3, 1. 1; 



Myrmecophaga minima, Brisson, R. A. p. 28. 



Cyclothmus didactjdus. Lesson ; Gray, Cat. Manim. B. M. p. 191 ; 



P. Z. S. 1865, p. 385. 

 Little Ant-eater, Edw. Glean, i. p. 220, t. 220. 

 Fom-milier a deux doigts, Cuv. Oss. Foss. v. p. 103. 



Hub. South America, Brazil. 



2. Cyclothurus dorsalis. B.M. 



Golden yellow, silky ; back with a broad, weU-defined black stripe ; 

 feet and tail yellow. 



Cyclothurus dorsalis, Graij, P. Z. S. 1865, p. 385, t. 19. 



Hab. Costa Rica (Salvin). 



The back and sometimes the sides are washed with blackish. Al- 

 ways known by the distinct, well-defined, broad dorsal streak, and 

 the yeUow colour of the feet and tail. 



