44 



FAICONID-i:. 



Adult. General plumage ashy grey, a little browner on the back, 

 and everywhere minutely vermiculated with dusky brown, the lower 

 back and rump less plainly irrorated ; head with a frontal and 

 nuchal crest, but not nearly so much developed as in C. cristata ; 

 lores and a distinct eyebrow white ; head, neck, and breast greyer 

 than the rest of the body, the two former more coarsely vermicu- 

 lated ; abdomen, thighs, and under tail-coverts pure white ; under 

 wing-coverts greyish like breast, and vermiculated in the same way, 

 the lower ones barred alternately with black and white ; quills black, 

 externally shaded with ashy grey, the inner secondaries rather 

 browner, and vermiculated on the outer margin with brown, the inner 

 webs marked with seven or eight white bars, on which appear slight 

 remains of vermiculations ; upper tail-coverts and two centre tail- 

 feathers ashy grey, with minute vermiculations, the others more 

 coarsely mottled, and crossed towards the tip with two black bars, 

 the subterminal one the broadest ; bill black ; feet brown ; iris 

 reddish brown. Total length 31 inches ; culmen 2-25, wing 12-8, 

 tail 13-5, tarsus 5*8. 



Hah. Provinces of Catamarca and Tucuman, in the Argentine 

 Eepublic. 



a. Ad. st. Argentine Republic. Prof. Burmeister [P.]. 



b. Skeleton. 



14. SERPENTAEIUS*. 



Serpentarius, Cuv. Tahl. Elhn. cVHist. Nat. p. 254 Type. 



(1798) S. secretarius. 



Secretarius, Daucl. Traite, ii. p. 29 (1800) S. secretarius. 



Gypogeranus, IlUger, Prodr. p. 234 (1811) S. secretarius. 



Ophiotheres, Vieill. Analyse, p. 59 (1816) S. secretarius. 



Foot of Serpentarius secretarius. 



* By Strickland and others the generic name of Sagittarius has been used 

 from Vosmaer's ' Besch. Afrik. Eoofvogel ' (1769) ; but a referenoe to the work 

 shows that Vosmaer never used the word in a generic sense at all. 



