218 ■ TURDID^. 



The female does not diifer from the male. Birds of the year aud 

 young in Jimt jilumuge appear to be UIlkll0^yn. 



a. 2 ■'id. sk. Yqiiitos, Peru, October 5 Henry Seebohm, Esq. [P.]. 

 (H. Whitely). 



31. Turdus ohsoletus. 



Tm-dus obsoletus, Lawr. Ann. L. New York, 1862, p. 470 ; Baircl, 

 Rev. Am. B. i. p. 28 (1864); Salvin, P. Z. S. 1867, p. 133; Lmvr. 

 Ann. L. New York, ix. pp. 91, 14-5 (1868) ; Frantzius, Joiirn. Orn. 

 1869, p. 290 ; Sahin, Ibis, 1869, p. 312 ; Gray, Hand-1. B. i. 

 p. 258. no. 3772 (1869) ; Salvin, P. Z. S. 1870, p. ISO ; Sali: ^ 

 Godm. Biol. Centr.-Ainer. ZooL, Aves, i. p. 19 (1879). 



In the adult male in autumn plumage the general colour of the 

 upper parts is an almost uniform dark russet-brown, very slightly 

 darker on the head and considerably greyer on the inside webs of 

 the quills ; the general colour of the uuder])arts is pale russet- 

 brown, shading into white on the centre of the belly, and obscurely 

 streaked with darker brown on the chin and upper throat. Under 

 tail-coverts white, with pale russet-brown bases and sides ; axil- 

 laries and under wing-coverts rich ochraceous brown ; inner margin 

 of quills pale chestnut-brown. Bill dark brown above and below. 

 Wing with the fourth and fifth primaries nearly equal aud longest, 

 second primary between the sixth and seventh, bastard primary 

 1-0 to 0-8 inch. Legs, feet, and claws dark brown. Length of wing 

 4-95 to 4-8 inches, tail 3-75 to 3-4, culmen 0-95 to 0-85, tarsus 1-2. 



It is not known that there is any sexual difference worth recording, 

 or that any appreciable change is produced by abrasion. In young 

 in first plumage most of the feathers of the upper pai-ts have 

 ochraceous shafts, and the scapulars and wing-coveits ochraceous 

 tips. The underparts are also much suffused with ochraceous, 

 especially on the breast and flanks, aud most of the feathers have 

 more or less obscure dark-brown tips ; the inner margin of the 

 quills is also more ochraceous. 



Lawrence's Sabian Thrush, the Central- American form 'of T. 

 finnigatiis, ajipears to be confined to the provinces of Costa Rica 

 and Panama in Central America, where it is supposed to be a 

 resident. 



The British Museum does not possess an example of this species ; 

 but skins are in the collection of ilessrs. Salvin and Godman and in 

 my own. 



32. Turdus nignrirostris. 



Turdus nigrirostris, Laurence, Ann. N'cw York Ac. Sc. i. p. 147 

 (1878) ; id. Pr. U.S. Nat. Mus. 1879, p. 267. 



This is an island form of T. fumigatus, and differs from that 

 species and from T. hau.vwelli in having the general colour of the 

 upper parts dark russet-brown, with scarcely any chestnut tint. 

 The underparts are slightly paler and greyer than those of T.haua-- 

 welli, and much less ochraceous than those of T. fumigatus; and most 



