614 Zoological Society, 



In the collections of the Royal Museum at Brussels and of His 

 Highness the Prince Massena, to whose kindness I am indebted for 

 the loan of the specimen here described. 



For this species, perhaps the most interesting of its family, I can- 

 not do better than retain the specific appellation proposed for it in a 

 letter lately received from him by my late much- valued and lamented 

 friend Mr. John Natterer of Vienna, whose talents as a naturalist 

 are too well known to require any eulogy from me. 



Ortyx leucotis. O. facie, cristd, et jplumis auricularihus albis, 

 fusco leviter tinctis, guld saturate castaned, colli utroque latere 

 strigd splendide castaned nigro punctata, ornato ; corpore suhtus 

 castaneo, albo distincte guttata, prasertim apud pectus atque 

 later a. 



Adult Male. — Face, crest and ear-coverts white, slightly tinged 

 with buff; throat dark chestnut; stripe from over the eye down each 

 side of the neck chestnut, speckled with black ; stripe down the back 

 of the neck buff, speckled with black ; sides and back of the neck 

 spotted black and white ; all the upper surface, wings and tail grey- 

 ish brown, very minutely freckled with dark brown and greyish 

 white ; centre of the back blotched with black ; inner webs of the 

 scapularies and secondaries dark brown, margined internally with 

 buff, forming a line in the direction of the body when the wing is 

 closed ; all the under surface chestnut, distinctly spotted with white, 

 the spots separated by black; under tail- coverts buff, with a black 

 mark down the centre of each ; middle of the abdomen reddish chest- 

 nut ; bill black ; feet flesh-colour. 



Young Male. — Crest and ear-coverts brown, head and throat stri- 

 ated with rufous and black ; spots on the back stronger than in the 

 adult ; the colouring of the under surface similar, but much less rich, 

 and the centre of the abdomen deep buff. 



Female. — Crest and ear- coverts brown ; sides of the head and the 

 under surface pale buff, spotted and blotched with brown and black ; 

 centre of the abdomen wholly buff; all the upper surface pale brown, 

 crossed by numerous narrow freckled bars of white ; tail crossed by 

 six or eight similar bars. 



Total length, 8:J inches ; bill, -j^^; wing, 4| ; tail, 2|; tarsi, 11. 



Hah. Santa Fe de Bogota. 



Ortyx (Odontophorus) strophium. O. vertice et plumis auricu- 

 larihus nigrescenti-fuscus ; facie sordide alhd nigro punctatd; 

 mento alho, guld saturate nigrd, lunula alhd, ornatd. 



Crown of the head and ear-coverts blackish brown ; sides of the 

 face dull white, speckled with black ; chin white ; throat deep black, 

 crossed by a broad crescent- shaped mark of pure white ; all the upper 

 surface dark brown, freckled and marked with sandy buff; each of 

 the scapularies with a large patch of black near the tip of the inner 

 web, and a stripe of buff down the centre; all wing-coverts with a 

 spot of buff at the tip ; primaries and spurious wing dark brown ; 

 breast and under surface rich reddish chestnut, with a large spot of 

 white in the centre of each feather ; vent and under tail-coverts deep 

 brown tinged with buff; bill black; feet blackish brown. 



