‘12 
latissimum. Lmelle elongate. Nares ovales prope culmine et baso— 
locate. Lingua obtusa ad apicem appendiculata lateraliter und ordine 
setarum brevium, et supra has setus postice novem spinis wee. 
et duplice ordine centrali spinarum brevium ornata. 
Ext. Cuar. eet with the hind toe small, and not lobated. Thighs ; 
_ with a fourth part naked. Bill long, much the broader at the tip. a 
Nostrils oval, placed near the culmen and base. Tongue obtuse, with é 
an appendage at tip; furnished with one row of short bristles on the 
the sides, and above these bristles, behind, with nine spines; in the 
middle above with a double row of stout spines. 
Anas. Linn., Sw. 
Ruyncnapsis. Leach’s MSS., Steph. 
SPATULA. lem. 
Tyree. Spatula clypeata. 
Affinities. This and the two following, as well as the preceding 
genera, are very nearly connected, both in form and habit. 
GENUS XII. MALACORHYNCHUS. 
Kixr. Cuar. Pedes digitis posterioribus parvis, et non lobatis. 
Tibia paululum denudatz. Rostrum longum, ad apicem multum 
latissimum, et lateribus membranis flexilibus instructis. Zamelle 
longe. Nares ovales, parvee, prope basin locate. . 
Ext. Cuar. Fvet with the posterior toe small, and not lobated. 
Thighs little denuded. Bill long, atthe apex much the broadest, and 
furnished on the sides with flexible membranes. Lamelle long. 
Nostrils oval, small, placed near the base. 
Anas Linn. 
Ruynewaspis. Leach. 
MALAcoRHYNCHUS. Swainson. 
Type. MWalacorhynchus membrinaceus. 
GENUS XIII. CHAULELASMUS. 
Ext. Cuan. Pedes digitis posterioribus mediocribus, et non lobatis. 
fostrum non latius ad apicem quam ad basin. Lamelle paululum 
elongate. Nares ovales, magne, vix elongate. Lingua obtusa, ad 
apicem appendiculata, lateribus un4 ordine setarum brevium, supra 
has setas laterater centrali parte quinque spinis, et in medio supra 
duplice ordine setarum brevium instructi. 
