12. IBYCTER. 37 



Ivago crassirostris, Pels. Sits. Akad. Wien, xliv. p. 7 (18G1)- id 

 Verh. z.-b. Wien, 1862, p. 136. ' 



Young. Above rufous browu, with distinct ochraceous-bufF tips 

 to most of the feathers of the upper surface, a little less distinct on 

 the wing-coverts ; head more decidedly rufous, with longitudinal 

 fulvous tips ; under surface of body uniform dull rufous brown, the 

 lower abdomen and thighs broadly mottled with pale fulvous, the 

 under tail-coverts almost entirely of the latter colour ; quills dark 

 brown, inclining to greyish on the outer margin of the primaries, 

 the primary coverts and primaries conspicuously white on the inner 

 web and less so on the outer, the latter margined and the former 

 spotted with brown ; upper tail-coverts very long, creamy white, 

 barred with brown on inner web ; tail dull rufous brown, dull ochre 

 on the inner web, inclining to white towards the tips of the feathers, 

 many of the feathers mottled with rufous brown near the base ; 

 under wing-coverts rufous brown, tipped with fulvous, the greater 

 ones dull ochre margined with brown. Total length 22 inches, 

 culmen 1-65, wing 15-1, tail 8-5, tarsus 3-05. 



Adult. Head crested, the feathers of the crown recurved ; upper 

 surface glossy black, with greenish reflections ; primaries black ; 

 secondaries shaded with chocolate-brown ; all the quills tipped with 

 ashy white ; upper tail-coverts white ; tail black, white at base, and 

 broadly tipped with the same ; sides of face and neck and under- 

 parts as far as the lower breast black ; abdomen, thighs, and under 

 tail-coverts white, the flanks somewhat mixed with black, which 

 extends some way from the breast ; under wing-coverts white, as 

 also the small plumes along the bend of the wing ; cere and lores 

 bare and yellow ; bill yellow, horn-blue at base of both mandibles ; 

 cere and bare space round eye bright orange ; feet orange-yellow ; 

 iris brown. Total length 21 inches, culmen 1-5, wing 14-6, tail 8-5, 

 tarsus 1-6. 



Hah. Pacific side of the Andes in Chih, Bolivia, and Peru. 



Hugh Cuming, Esq. [C.]. 

 ]\lr. P. Brydges [CI. 

 C. Crawley, Esq. [P.]. 

 Zoological Society. 

 Zoological Society. 

 Henry \Miitely, Esq., Jun. [C. 

 Henry Whitely, Esq., Jun. fP.' 

 Henry Whitely, Esq., Jun. [P. 

 Henry Whitely, Esq., Jun. "P. 



4. Ibycter albigularis. 



Polybonis albogularis, Gonld, P. Z. S. 1837, p. 9. 



Milvago albogularis, Darioin, Voy. Beagle, Birds, p. 13, pi. 1 (1841); 

 Strickl. Orn. Syn. p. 22 (1855); Scl. Ibis, 1861, p. 23; Gray, 

 Hand-l. i. p. 5 (1869); Scl. 8f Salv. Nomencl. At: Neotr. p. 122 

 (1873). 



Not quite adult (type). Above brownish black, with several rufous- 



