1S7G-] NEOTROPICAL ANATID.E. 397 



Denkschr. Ak. Wien, v. p. 131 (1833). et J. fiir Orn. 1855, p. 57 

 (Chili). 



Rkynchaspis mexicana, Licht. Nomencl. p. 102 (descr. nulla) (?). 



Supra et suhtus rufescens, nigra guttata, capite et cervice undique 



ddutioribus et maculis minutis aspersis ; uropygio nigra; dorso 



postico nigricante rufo undulata ; alis fusco-nigris, tectricibus 



ininaribus axruleis, intermediis albis ; secundariis extus (eneis 



viridi nitentibus, scapularibus et secundariis dorsi proximis 



linea scapum occnpante alba arnatis ; crissa nigra ; cauda 



fusca, rectricibus lateralibus extus albo marginatis ; rastro (in 



pelle) obscuro ; pedibus Jlavis : lang. tota 20-5, alee 8-0, 



Cauda 45, tarsi 1-4, rastri a rictu '2'7. Fem. supra nigri- 



canti-fusca, plumnrum marginibus cervino-rufis ; tectricibus 



alarum minoribus ccertdescen/e lavatis ; subtus cervina-rvfes- 



cens nigra variegata et obsalete punctata ; gula fere imma- 



culafa, crassifie minare. 



Hab. Buenos Ayres (Azara ^ Hudson) ; Parand {Burm.) ; Chili 



{Phil. ^ Landb.) ; Falklands (Leconte). 



According to Azara this species of Shoveller is found both in 

 Paraguay and in Buenos Ayres. Burmeister also met with it on the 

 Parana and near Buenos Ayres. In Chili Philippi and Landbeck 

 state that it is common in the central provinces, but rarer towards 

 the south. Mr. Darwia obtaind his specimen of this Shoveller from 

 the Rio de La Plata ; whence also the one described in Jardine and 

 Selby's 'Illustrations of Ornithology,' under the name q( Rkyn- 

 chaspis maculatus, was procured by Mr. Gould. 



A female of this species, in Salvin and Godman's collection, was 

 obtained in the Falklands by Leconte when he went to obtain living 

 Sea-lions in 1867. 



Genus 10. Aix. rp 



Aix, Boie, Isis, 1828, p. 329 A. spansa. 



Dendranessa, Sw Faun. Bor.-Am. Birds, p. 497(1831). A. sponsa. 



Lampronessa, Wagler, Isis, 1832, p. 282 A. spansa. 



Aix is an Arctic form, the American species of which has dif- 

 fused itself as far south as Cuba and Jamaica. 



Aix sponsa. 



Anas sponsa, Linn. S. N. i. p. 207 (17G6). 



Aix sponsa, Boie, Isis, 1828, p. 329 ; Baird, B. of N. Am. p. 785 ; 

 Gundl. J. fur Orn. 1857,*p. 226, Repert. F.-N. i. p. 389, et J. fur 

 Orn. 1875, p. 381 (Cuba); March, Pr. Ac. Phil. 1864, p. 71 (Jamaica); 

 Scl. & Salv. Nom. Av. Neotr. p. 130; Lawr. Mem. Bost. Soc. ii. p. 315 

 (Mexico). 



Hab. Mexico {Abert) ; Cuba {Gundl.); Jamaica {March). 



A resident species in Cuba, frequenting shady lagoons. It nests 

 in the island ; but at what time of year Dr. Gundlach had not ascer- 

 tained. In Jamaica it is very rare. Mr. Lawrence gives Col. Abert 

 as the authority for its occurrence near Mazatlan, Mexico. 



