Aiiatine Gcmts Ni/rora (uid TIh Ncarrsl AII'ks. 11:', 



ic of tlic iiuisf easily s(>i>aralc(l i.'r<Mi|K of Mk.sc how iiimI<t coiisidcralinii. 



Us only spccitw is A ri.sl<>,i<t hi nilisiinria (Wiisdiu. 



The followiutr key t.. the .ucncra licic treated is added fm- cniiveiiienee ef 

 'feronco and as a iiiei-e .m-ai)lnc exposition nf salient ciia raeters. 



A.NAI.VTK AI. Ki:V T(J ( I KN Ki! A Al.MKI) TO XVKOCA. 



' Lenj;tii of exiiosed cninien aliont e(|nal to len.i:tli of innei- toe witii claw. 

 It'. J'.asi- of culnien deeply concave; aiilurior uiilline of fuatlioring at 

 base of cnlnien actUely pointed; feathering on sides of maxilla not 

 reaching anteriorly as far as that at base of culinen ; hill more 

 flattened anteriorly, longer and slenderer, not wider neai' end than 

 at base; length of exposed enhnen :! times the greatest width of 

 bill; tip of maxilla not at all or very slightly ho(d<e(l ; nail of hill 



narrow and with parallel sides 1 ri.stonctta. 



b": Base of culmen not deeply concave; anterior ontline of feathering at 

 base of culmen not acutely pointed, but broadly convex ; feathering 

 on sides of maxilla reaching anteriorly as far as that at base of 

 culmen; bill less flattened anteriorly, shorter and stouter, decid- 

 edly wider near end than at base; length of exposed culmen only 

 21/2 times the greatest width of bill; tip of maxilla strongly 

 hooked ; nail of l)ill rather wide and subtriangular. . . .Perissonetta. 

 -. Length of exposed culmen decidedly shorter than inner toe with claw. 



ft'. Base of culmen deeply concave Aithyia. 



ft-. Base of culmen not deeply concave. 



c'. Tip of bill squarish, its width at posterior end of nail not less than 



2 1/2 times the length of nail /•'(///./■. 



cr. Tip of bill much rounded, its width at posterior end of nail less 

 than 2 1/2 times the length of nail. 

 (l\ Length of wing less than H times the length of exposed culmen ; 



no long pointed occipital crest Siintcn. 



(/-. Length of wing not less than 5 times the length of exix)sed 

 cidmen : a long (7.") mm. ) pointed occipital crest FuUcfula. 



