220 TITEDIDJE. 



soutliwards, through Ycra Cruz, and throiighont Central America 

 into Colombia. 



a, h. S ad. sk. Mexico. Purchased. 



c. Ad. sk. Guatemala. Purchased. 



d. Ad. sk. New Granada. Purchased. (Type of Plane- 



sficus luridus, Bonap.) 



The synonymy of the eonspecific form is as follows : — 



34. Turdus casius. 



Planesticns casius, Bp. Compt. Rind. xli. p. G-j7 (185o). 



Turdus csesius (Bonap.), Gray, Hand-l. B. i. p. 2.57. no. 3744 (1869). 



Turdus casius {Bonap.), Sdater, P. Z. S. 1859, p. 330; Laior. Ann. 



L. N. H. New York, vii. p. 326 (1862). 

 Turdus <iTayii, Bonap., apud Baird, Rev. Am. B. i. p. 26 (1864, , 



2>artun), apud Salv. l^' Godm. Biol. Centr.-Amer. ZooL, Aves, i. 



p. 18 (1879, partim). 



This form only differs from the preceding in having the upper 

 parts russet-brown instead of olive-brown. 



Bonaparte's form of Gray's Thrush is a local race, which has 

 become partially differentiated from its near ally in Panama. 



a. Ad. sk. Panama. Capt. Kellett and Lieut. Wood [P.]. 



(Type of Planesticus casius, Bonap.) 



35. Turdus migratorius. 



La Grive de Canada, Briss. Orn. ii. p. 225 (1760). 



Turdus migratorius, Linn. Syst. Nat. i. p. 292 (1760); Gmel. Si/$t. 



Nat i. p. 811 (1788); Lath. hid. Orn. i. p. .330 (1790); Vieill. N. 



Diet. d'Hist. Nat. xx. p. 230 (1818); Wilson, Amer. Orn. i. p. 35, 



pi. ii. fig. 2 (1808); Auduh. Orn. Biorp: ii. p. 190(1834); Temm. 



Man. d'Orn. iii. p. 91 (1835); Bp. Comp. List B. Eur. 4'- N. Amer. 



p. 17 (1838); Keys. u. Bias. Wirb. Eur. pp. Iii. 178 (1840); Gray, 



Gen. B. i. p. 219 (1847); Beql. Orn. Eur. i. p. 462 (1849); Bp. 



Consp. i. p. 272 (1850); Cab. ' Mus. Hein. i. p. 4 (1850); Sclate.r, 



P. Z. S: 1856, p. 294 ; id. P. Z. S. 1859, p. 331 ; id. Cat. Amer. B. 



p. 4 (1802); Newt. List B. Eur. B!asii/s, p. 9 (1862); Degl. et 



Gerhe, Orn. Eur. i. p. 406 (1867) ; Dull S,- Bann. Tr. Chic. Acad. 



i. p. 276 (1869); Gray, Hand-l. B. i. p. 257. no. 3747 (1869); 



Fritsch, Vor/. Ear. p. 143 (1870); Cones, Key N. Amer. B. p. 72 



(1872); id.'B. N. West, p. 228 (1874). 

 La Litorne de Canada, Montb. Hist. Nat. Ois. iii. p. .307 (1775). 

 Grive du Canada, Davbent. PI. Enl. no. 556. fig. 1 (1775). 

 Turdus canadensis, P. L. S. MiUl., Linn. Syst. Nat. Anbang, p. 140 



(1776). 

 Red-breasted Thrush, Lath. Gen. Syn. ii. p. 26 (178-3). 

 Merula migratcria (Linn.), Stv. Faun. Bor.-Amer. Birds, ii. p. 176 



(1831); Gould, B. Eur. ii. pi. 74 (1837). 

 Turdus (Planesticus) migratorius (Linn.), Baird, Cass., i$~ Later. B. 



N. Amer. p. 218 (1858) ; Coues, Birds Colorado Vail. p. 8 (1878). 

 Planesticus migratorius (Linn.), Cones, Ibis, 1865, p. 163 ; Gundlach, 



Journ. Orn. 1872, p. 405. 



In the adult male in spring jjlumage the head, lores, and ear- 

 coverts are black ; round the eye and a spot in front white ; fea- 



