. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Muscuni of Comparative Zoology, Vol. 134, Xo. 1 Genus Penelope Merrom 1786 1) pipile spccic's-group \pipih' (Jacquin) j ciimaneiisis (Jaccjuin) lacucaca species-sroup jacucaca Spix •i) purpurascens species-group purpurascens \\'agler 4) nionta^nii species-group »ionta<inii (Bonaparte) imirail (P. L. S. Miiller) ar^11 rot is ( Bonaparte) supereiliaris Teinniiiick Genus Ahinria Heicheiihach 1852 ahurri (Lesson) Genus Chaniaepetes Wagler 1832 \iniieolor Salvin I'fioudotii (Lesson) Genus Oreophasis Gray 1844 derhiamts
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Muscuni of Comparative Zoology, Vol. 134, Xo. 1 Genus Penelope Merrom 1786 1) pipile spccic's-group \pipih' (Jacquin) j ciimaneiisis (Jaccjuin) lacucaca species-sroup jacucaca Spix •i) purpurascens species-group purpurascens \\'agler 4) nionta^nii species-group »ionta<inii (Bonaparte) imirail (P. L. S. Miiller) ar^11 rot is ( Bonaparte) supereiliaris Teinniiiick Genus Ahinria Heicheiihach 1852 ahurri (Lesson) Genus Chaniaepetes Wagler 1832 \iniieolor Salvin I'fioudotii (Lesson) Genus Oreophasis Gray 1844 derhiamts (1. R. (iray Genus Crux Linnaeus 1758 I ) nihni species-group \rubra Linnaeus l^lobulosa Spix (alberti Fraser \annulatu Tockl [daubenfoni G. R. Clray jasciolata Spix blumcnbachii Spix alector Linnaeus 2) mitu species-group \mitii Linnaeus \ salvini ( Reinliardt) [tonientosa Spix pauxi Linnaeus arumiitum Spix CHARACTER ANALYSIS 1) Casque Bony structures growing as projections from cranial liones, usually the frontals, the premaxillae or the parietals, and covered in life by a homy development of the rham- photheca, are found in many families of birds. In the Cracidae, such a casque is present and well developed in Crux mitu (Fig. 21), C. pauxi (Fig. 1), and Oreopha- sis derhiamts (Fig. 2); it is absent in the other species of Crax and in the other genera. The size of the casque varies during the life of the bird. In the young Crax mitu, the bill is almost normal and presents only a slightly flattened and elevated culmen, contrasting with the enormous and bulbous casque of the adult, especially of the male (Fig. 21). In life, the homy covering of the casque is brightly colored: orange-red in Crax mitu, blue in C. pauxi, and red in Oreophasis derbianus. It is noteworthy that in other species of Crax, that lack a bony casque, there is either a fleshy knob, usu- ally red or yellow, or a brightly colored rhamphotheca. It is very likely that structures like a bony casque and a fles
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Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
