61. MEUGANErXA. 461 



broader than in tho allied species. Total length about 17 inches, 

 wing 7, tail -1'75, culiuen 1 ■!)(), tarsus 1*6 (Mus, Berlepsch). 



Female. Unknown. 



Hah. Bolivia and Tucuman. 



a. (S ad. sk. No locality. Gould Coll. 



(Compared with the type.) 



5. Merganetta leucogenys. 



Anas leucogenls (sic), Tsch. Wieym. Arch. 1843, i. p. 390 (.\i;des of 



Peru); Gieb. Then. Orn. i. p. 3r,5 (1872). 

 Erlsiuatura leucogenys, Tsch. Wieym. Arch. 1844, i. p. 31G, 



n. 348. 

 Merganetta leucogenys, Tsch. Fauna Per., Aves, pp. 5o, 311, t. x.txvi. 



(1846); Rchnb. Si/n. An., Natatores, t. 79. f. 2325 (1850) (e.v 



Tschudi); Up. Coiiipt. li-nd. xliii. p. 652, n. 165 (part.) (1856); 



Sclat. Sf Salr. P. Z. S. lS(i!), p. 601 (part.) ; iid. Kntt. Orn. p. 200 



(part.) (1869) ; G. R. Gr. Hand-list, iii. p. 91, ii. 10727 (part.) 



(1871) ; !<clat. ^ Salv. Nomencl. Av. Neutrop. p. 131 (part.) 



(1873) ; ? Tacz. P. Z. S. 1874, p. 554 (Maraynioc, Centr. Peru); 



? Sclat. ^- Salr. ibid. pp. 678, 679 (Upper Andes) ; iid. P. Z. S. 



1876, p. 40S (part); ? Tacz. P. Z. S. 1879, p. 243 (Tumbez, N. 



Peru) ; Sclat. P. Z. S. 1880, p. 531 (part.) ; Tacz. Orn. Per. iii. 



p. 486 (1886). 

 Merganetta arniata, part., G. P. Gr. Gen. B., App. p. 28 (1849). 

 Hiziura arniata, part., Schleq. Mus. P.-B., .'inseres, p. 12 (1866); 



Gieb. Thes. Orn. i. p. 467 '(part.) (1872). 

 ? Merganetta arniata, fern., Eyt. Syn. Anat. p. 140 (1869). 

 lihaphipterus leucogenys, pait., Rchnw. Orn. Centralbl. 1882, p. 3 



(N. Peru). 



Adult male (type). Similar to M. columhiana, but the brown 

 colour of the edges of the feathers of the mantle and scapulars a 

 shade darker : a ring of black feathers round the neck sharjjly 

 defines the white of the upper part of the neck ; breast, abdomen, 

 and under tail-coverts whitish with a slight rusty tinge. Size of 

 M. colaiiibiana. 



Female. I have not seen a bird of this sex which I could surely 

 attribute to M. leucoe/eni/s ; a female from Maraynioc (if really 

 belonging to J\J. levcogenys) is described by Taczanowski as having 

 the sides of the neck and the posterior part of the head grey finely 

 vermiculatcd with black, and in this respect differs from the female 

 of M. cohonbiana, and resembles M. armata and M. turneri, but 

 it differs from them in having the marginal under Ming-coverts 

 undulated with whitish. 



i'ounri in down from Tumbez, Northern Peru. " White, upper 

 part of tho head, a i)ostocular stripe, a band ou the hind neck 

 extended to the back, wings, and a broad baud on each side of the 

 back brown ; tail-feathers long, stiff, and with the barbes rares " 

 (TaczanoH'ski). 



This species is Manting in (he British Museum, but, thanks to 

 I'rof. Paul (Jodct, Dirrttor of the Mu.seuni of Xcnuhatel, I have 



