CYCLOPES. 25 
Myrmydon Wagl., Nat. Syst. Amph., 1830, p. 36. 
Dionyx I. Geoff., Rés. Legons. Mamm., Mus. Paris, 1835, p. 54. 
Didactyles F. Cuv., Dict. Scien. Nat., L1x, 1829, p. 501. 
Myrmecolichnus Reich., K. Sach. Naturh. Mus. Dresden, Ein 
Leitfaden, 1836, p. 51. 
Eurypterna Glog., Hand-u. Hilfsb. Naturg., 1841, pp. XxXXI, 112. 
Cyclothurus Less., Nouv. Tabl. Régn. Anim., 1846, p. 152. 
Didactyla Liais, Climats, Géol. Faun. Géog. Botanique Brésil, 
1372, Pres 5.0: 
Fic. 6. CYCLOPES DORSALIS. 
No. 16957 Am. Mus. Nat. Hist. Co Nat. size 
Skull short and arched; palatines and pterygoids not meeting in 
middle line; canal for posterior nares not closed below; coronoid 
narrow, recurved, with angular process well developed; third digit 
of hand much longer than the others, the distal phalange is com- 
pressed, curved, pointed, and armed with a strong curved claw; 
hallux of hind foot rudimentary and contained within the skin. Ribs 
dilated. Habits strictly arboreal. 
19. dorsalis (Cyclothurus), Gray, Proc. Zoél. Soc., 1865, p. 385, pl. 19. 
LITTLE OR TWo-TOED ANTEATER. 
Type locality. Costa Rica. 
Geogr. Distr. Guatemala through Central America to South 
America. 
Genl. Char. Distinctly defined broad dorsal streak; feet and 
tail, yellow. 
Color. General hue golden yellow tinged in places with chestnut; 
dorsal stripe black or blackish chestnut; tail, hands, and feet, golden 
yellow; back and sides sometimes washed with black; black patch 
on center of breast. 
