102 COEACIAP^. 



h. Oil-gland tufted ; caeca absent. 



c'. Four notches behind sternum Halctones. 



d'. Two notches behind sternum. 



a". No lateral bare tracts (apteria) on neck ; 



11 primaries Buceeotes. 



b". Lateral cervical apteria present ; 10 pri- 

 maries IJprPjE. 



The South-American Motmots and W.-Indian Todies also 

 belong here. 



Suborder COBACIu^. 



Caeca present. Oil-gland nude. Sternum with four notches 

 on the posterior margin, and the manubrium sterni consists of the 

 outer process (spina externa) only and is long and not distinctly 

 forked. Both carotids are present. The spinal feather-tract well 

 defined on the neck, but forked on the upper back, to leave a 

 dorsal apterium or featherless space. 14 cervical vertebrae. The 

 plantar tendons blend completely before subdividing at all. 



A single family. 



Fig. 28.— Left foot of C. indica. 



Family CORACIAD^. 



Bill corvine in shape, the upper mandible notched beneath near 

 the end, culmen rounded. Outer united to the middle toe at the 

 extreme base, inner toe united by its basal joint. Nostrils at the 

 base of the mandible. Primaries 10 ; tail-feathers 12. Sexes 

 alike. 



