CRACID^ — THE CURASSOWS. 397 



Family CRACID-ffil. — The Curassows. 



Char. Body large, but rather slender ; bill more or less arched ; tail lengthened ; legs 

 long, robust, without any spur. Toes moderate, slender, the hinder scarcely elevated. 

 Naked spaces frequently occurring on the head and throat. 



Messrs. Sclater and Salvin, in their masterly and model monograph of 

 Cracidce (Pr. Zool. Soc. 1870, 504), define the subfamilies as follows: — 



A. Post-acetabular area narrow; upper mandible higher'than broad; culmen 

 compressed I. Cracince. 



B. Post-acetabular area broad ; upper mandible broader than high ; culmen 

 depressed. 



Top of head covered with feathers ; space between the nostrils naked ; 

 nostrils exposed II. Penelopince. 



Top of head with a bony tubercle ; internasal space densely feathered ; 

 nostrils concealed III. Oreophasinoe. 



By the term "post-acetabular area" is understood that portion of the 

 dorsal aspect of the pelvis which is bounded in front by a line drawn through 

 the acetabula. 



The Cracince, or Curassows, are found in Mexico, in Central and in South 

 America; the OreojjJiasince are represented by a single species, Oreophasis 

 derbianus, a bird nearly as large as a Turkey, occurring in the wooded region 

 of the Volcan de Fuego, Guatemala, at an altitude of 10,000 feet. Of the 

 Penelopince one species only is found in the United States. 



SqBFAMiLY PENE LOPING. 



This is the most extensive section of Crcicidce, embracing, according to 

 Sclater and Salvin, no less than thirty-nine species. The genera indicated 

 are as follows : — 



A. A central fold of skin on the throat. 



Outer quills narrow, but entire. 



Throat feathered 1. Stegnolasma. 



Throat naked. 



Sexes similar 2. Penelope. 



Sexes different 3. Penelopina. 



Outer quills emarginated. 



Gular fold short 4. Pipile. 



Gular fold lengthened ; linear 5. Aburria. 



B. No central gular fold. 



Throat feathered ; outer quills emarginated . . . , G. Chamaepetes. 

 Throat naked ; with a central line of bristly feathers ; outer quills entire. 



7. Ortalida. 



