118 
NYROCA MELANOCEPHALA. — 
Ny.—Brunnei, capite colloque atris. 
BLACK-HEADED POCHARD. 
Ny.—Brown, with the head and neck black. 
: IN. IN. 
PION P II Spite gins ede Ck DMCLOGOT SY ic cantaes aS 1 
DPE abe twenty wes tases 13 oS Middle t0e- Asn 
Under parts light silvery-grey; bill black, with a yellow spot on 
each side at the base; head and neck black, the remainder brown. 
Nyroca melanocephala .......+ TH ere, aimee Aare 
Fulig“ula nigroceps..eccccecsseces Vreill. aes 
APT IE LOPUUE iavscae so ceeccsmeiacses Merrem. 
Hab. Chili. 
NYROCA AUSTRALIS. 
Ny.—Proximo similis, sed majore. 
AUSTRALIAN POCHARD. 
Duck like the next, but larger. 
IN. IN. 
(PICHIA EN cas savnnnd onsce 21 Taner L00> sccteabpemenee 2 
VI eee cawak ous genca de 1Z Middle t0€....sssceveeves 23 
LUPSY sa sana dens tokens 13 OUT BOCs ae aaa cashes 23 
So extremely like Nyroca leucopthalmus, that as far as colouring 
goes one description will serve. The greater size, much larger and 
robust bill, and the bill being deep lead-coloured, with a fascia of 
lighter across just behind the nail, as well as being destitute of the 
white spot on the chin, serve to distinguish it. ~ 
Nyroca Australis ....ccececcceee Gould, MSS. 
Our specimen was obtained from Mr. Gould, who received it from 
Australia. 
NYROCA LEUCOPTHALMUS. 
Ny. Mas.—Ferrugineus; iridibus, speculo, mentoque macula, 
albis. 
Ny. Fem.—Mare similis, sed obscurior. 
