93 



5. LAGOPUS HEMILEUCURUS. The Ice Grous. 



Lagopus hemileucurus, Gould, Proc. Z. S. 1858, p. 354. 

 Tetrao lagopus, Ross, Att. to North Pole, p. 193. 

 Lagopus alpina, var. hyperborea, Gaim. Voy. en Scand. t. . 

 Tetrao alpina, p., Tor ell, Bidrag till Spetsb. p. 51. 

 Lagopus hyperborea, Malm, Nya Antek. till Spetsb. p. 100. 

 Lagopus alpinus, var. hyperboreus, Sundev. 

 Lagopus rupestris ?, Newt. Ibis, 1865, p. 504. 



a. Spitzbergen. Presented by the Lord High Admiral, K.G. 



6. LAGOPUS LEUCURUS. The White-tailed Ptarmigan. 



Tetrao (Lagopus) leucurus, Swains. Faun. Bor.-Amer. ii. p. 356, 



pi. 63. 

 Lagopus leucurus, Pr. B. Comp. List of B. of Eur. fy N. Amer. 



p. 44. 



a-e. Cascade Mountains, male and female. Presented by 

 J. K. Lord, Esq. 



Fam. VI. CHIONIDID^E. 



i. THINOCOBIN&. 



1. THINOCORUS. 



Thinocorus, Eschsch. Zool Atl. p. 2 (1829). 

 Ocypetes, Wagl. Isis, 1829, p. 762. 

 Itys, Wagl. Isis, 1830, p. 535. 

 Tinochorus, Less. Cent. Zool. p. 132 (1830). 

 Oxypetes, Agass. 



1. THINOCORUS RUMICIVORUS. Eschscholtz's Thinocorus. 



Thinocorus rumicivorus, Eschsch. Zool. Atl. t. 2. 

 Tinocorus Eschscholtzii, /. Geoffr. et Less. Cent. Zool. t. 50. 

 ? Ocypetes torquatus, Wagl Isis, 1829, p. 762. 

 a, b. Chili. 



