GRALLATORES. — ARDEADSZ. 353 
the bill. Face and sides of the chin naked. Lateral 
toes equal. (fig. 306. a) 
; P. cristata. Edwards, pl. 13. | 
Lophocerus, Sw.* Front of the head with an elevated, 
pear-shaped, horn-like protuberance. Bill interme- 
diate in shape between Craz and Ourax. Cere small. 
Nostrils basal, oval or round. (fig. 306. b) 
C. galeata. Lath. Pl. Enl. 78. 
OrveER GRALLATORES. Waders. 
Famity ARDEADZA. JHerons and Cranes. 
Size large. Bill long, conic, very hard, straight, and 
compressed. Hind toe moderate, and placed on the 
same level as the others. 
Arpea, Linn. Bill long, very straight throughout, 
conic, compressed from the base. Middle claw 
serrated. ; 
Ardea, Linn. Herons. (fig. 307.a) Bill very strong, 
perfectly straight ; the tip not bent downwards; the 
margins serrated: the gonys strong, and ascending. 
Scapular feathers long and linear. Legs long. Thighs 
naked a considerable distance from the knee. 
_* By this form I consider the circle of the Rasores is closed ; the genus 
Crax thus blending into that of Numida in the family of Pavonide. 
VOL. II. i AA 
