BIRDS OF NORTH AND MIDDLE AMERICA. 



235 



(100.9); tail, 94-111.5 (101.5); exposed ciilmen, 17-18.5 (17.6); 

 tarsus, 30-33.5 (31.7); middle toe, 19.5-21.5 (20.2).« 



Young. — Above light grayish brown (more decidedly brown on 

 rump and upper tail-coverts), sometimes indistinctly streaked with 

 dusky, especially on back and rump ; chest and sides of breast spotted 

 with dusk}^; wrings and tail as in adults, but tips of middle and greater 

 wing-coverts and broad edgings of secondaries dull buffy or pale 

 cinnamon-buff. 



Guiana and adjacent parts of Brazil ; Lesser Antilles^ (Grenada, 

 St. Vincent, Santa Lucia, Martinique, and Nevis) ;'^ St. Thomas, 

 Greater Antilles. 



Turdus gilvus Vieillot, Ois. Am. Sept., ii, 1807, 15, pi. 68 bis (Guiana); Nouv. 

 Diet. d'Hist. Nat., xx, 1818, 296; Enc. Meth., ii, 1823, 677. 



M[imus\ gilvus Gray, Gen. Birds, i, 1847, 221. 



[Mimus] gilvus Bonaparte, Consp. Av., i, 1850, 276. — Gray, Hand-list, i, 1869, 

 261, no. 3817. — Sclater and Salvi^p, Nom. Av. Neotr., 1873, 3, part. — Cory, 

 List Birds W. I., 1885, 6.— Sharpe, Hand-list, iv, 1903, 104, part. 



Mimus gilvus Sclater, Proc. Zool. See. Lond., 1859,342, part (monogr. ; British 

 Guiana); 1871, 268 (Santa Lucia; crit.); Cat. Am. Birds, 1862, 9, part (in 

 synonymy). — Pelzeln, Orn. Bras., ii, Abth., 1869, 94 (Forte do Rio Brancho, 

 n. Brazil). — Semper, Proc. Zool. Soc. Lond., 1872, 648 (Santa Lucia; song). — 

 Lawrence, Proc. U. S. Nat. Mas., i, 1878, 187 (St. Vincent), 268 (Grenada), 



o Eight specimens from Lesser Antilles. 



Specimens from the different islands (so far as sexed specimens are represented in 

 the series examined) compare in average measurements as follows: 



Having only one Guiana specimen for comparison, I cannot be sure that the West 

 Indian birds of this species are really referable to the typical form. If they are, it 

 seems reasonable to suppose they were first introduced into the French islands from- 

 Guiana, since a recognizably distinct form {M. gilvus tobagensu) occupies the inter- 

 mediate island of Tobago. The single Guiana specimen examined is certainly very 

 similar to most examples from the Lesser Antilles, but has a smaller bill than any of 

 them, and is also less in some other measurements. The middle and greater wing- 

 coverts are also more distinctly tipped with white. 



b Possibly introduced into one or more of the West India islands named above from 

 Guiana. 



c No specimen from Nevis seen by me. 



