1J876.] NEOTROPICAL ANAT1I)E. ii) y J 



I. Mergus f'UCULLATUS. 



Mergus cucullatus, Linn. S. N. i. p. 20/ (1/66); Cab. J. fur 

 Orn. 1857, p. 231 (Cuba) ; Scl. et Salv. Norn. Av. Neotr. p. 131. 



Lophodytes cucullatus, Baird,B. of N. Am. p. 816 ; Grundl. Repert. 

 F.-N. i. p. 391, et J. fur Orn, 1875, p. 385 (Cuba); Sclater, P. Z. S. 

 1859, p. 369 (Jalapa). 



Hab. Cuba (Gundlach); Mexico {Be Oca). 



The Hooded Merganser is of rare occurrence on passage in Cuba, 

 and does not appear to have been noted elsewhere within our limits, 

 except in South-eastern Mexico. 



2. Mergus octosetacetjs. 



Mergus octosetaceus, Vieill. N. D. xiv. p. 222 (1817), et Enc. 

 Meth. p. 351 (1823) (Brazil). 



Mergus brasilianus, Vieill. Gal. des Ois. ii. p. 209, t. 283 (1834) ; 

 Evton, Mon. Anat. p. 176 (1838) ; Burm. Syst. Ueb. iii. p. 441 ; 

 Pelz. Orn. Bras. p. 322 (1870) ; Schl. Mus. des P.-B. Anseres, p. 6 ; 

 Scl. et Salv. Norn. Av. Neotr. p. 131. 



Mergus fuscns, Licht. Doubl. p. 85 (1823). 

 Mergus lophotes, Cuv. MS. (teste Schlegel). 



Supra, fusco-niger purpureo vix tinctus ; plaga alarum duplici, 

 fascia nigra divisa, alba; cervice postica ceneo micante ; pileo 

 et crista elongata tenui saturate futnosonigris ; abd amine satu- 

 rate cinereo, fasciis numerosis a/bis in ventre signnto ; cervice 

 antica et pectoris lateribus griseo et nigra confertim vermicu- 

 latis ; rostro nigro, pedibus Jlavidis ; long, tota 19*0, alee 7 '2, 

 caudce 4'0, tarsi 1'4, rostri a rictu 2*2. 

 Hub. S.E. Brazil, Sao Paulo {Licht.); Rio Ytarare {Natt.). 

 This scarce Merganser was first described by Vieillot from Dela- 

 lande's specimens in the Paris Museum, and subsequently figured by 

 the same author under another name. Lichtenstein gives Sao Paulo 

 as its locality ; and Natterer obtained five examples on the River 

 Ytarare in the southern part of that province in August 1820. One 

 of these skins, marked as the female sex, is now in the collection of 

 Salvin and Godman, whence our description is taken. 



IV. Table of the Geographical Bistribution of the Neotropical 

 Anatida, with remarks thereon. 



On referring to the last column of the Table (pp. 410 & 411), it 

 will be seen that out of the 62 species of Anatidse included in the 

 Neotropical list 25 are likewise found in North America. Of these 

 25, however, two {Bendrocygna fulva and Querquedula cyanoptera) 

 are visitors from the south ; and the Nearctic species which intrude 

 into the Neotropical region (mostly in winter) are, so far as is at 

 present known, 23 in number, namely 



Anser hyperboreus, Anas boschas, 



ccerulescens, obscura, 



gambeli, strepera, 



Bernicla canadensis, Querquedula carolinensis, 



Proc. Zool. Soc— 1876, No. XXVII. 27 



