380 Field Museum of Natural History — Zoology, Vol. XIII. 



Aulacorhynchus caruleogularis cognatus Ridgway, Bull. U. S. Nat. Mus., No. 50, 

 VI, 1914, p. 350. 



Range: Southeastern Panama (Mt. Pirri). 

 Aulacorhynchus cyanolsemus {Gould). Gray-throated Toucanet. 



Aulacorhamphus cyanolcEmus Gould, Proc. Zool. Soc. Lond., 1866, p. 24 (Loxa, 

 Ecuador); Cassin, Proc. Acad. Nat. Sci. Phila., 1867, p. 121. 



Aulacorhamphus cyanolcemus Sclater, Cat. Bds. Brit. Mus., XIX, 1891, p. 160, 

 pi. X (Loxa and San Lucas, Ecuador). 



Range: Western Ecuador. 



*Aulacorhynchus atrogularis (Sturm). Black-throated Toucanet. 



Pteroglossus atrogularis Sturm, ed. Gould's Mon. Ramphastidae, ed. 2, 1850, 



pi. 50 and text (Andes of Peru)'. 

 Aulacorhamphus atrogularis Gould, Mon. Ramphastidae, ed. 2, 1854, pi. 50; 



Cassin, Proc. Acad. Nat. Sci. Phila., 1867, p. 121; Taczanowski, Orn. P6- 



rou, III, 1886, p. 159; Sclater, Cat. Bds. Brit. Mus., XIX, 1891, p. 160; 



Brabourne and Chubb, Bds. So. Am., I, 1912, p. 160, No. 1580 (central 



Peru). 



Range: Andes of central Peru. 

 2: Peru (Chunchamayo) . 



Aulacorhynchus dimidiatus (Ridgway). Ridgway's Toucanet. 



Aulacorhamphus dimidiatus Ridgway, Proc. U. S. Nat. Mus. IX, 1886, p. 93 

 (no type locality); Sclater, Cat. Bds. Brit. Mus., XIX, 1891, p. 160. 



Range: Unknown.^ 



• I designate Chunchamayo, central Peru, for the type locality. 



•^ Only known from two specimens in the U. S. National Museum. They were 

 found attached to a bead belt, the origin of which is unknown, "but it is supposed, 

 judging from the birds, which were suspended from it as ornamental appendages, 

 to have come from some portion of the Upper Orinoco region, in Venezuela, or con- 

 tiguous portion of the Rio Negro basin." (Ridgway, /. c, p. 92.) 



