58. ODONTOPHOBtrs. 433 



a, b. Ad. sk. S. America. Gould Coll. 



c. Ad. sk. Demerara, Brit. Guiaua. Gould Coll. 



d. (S ad. sk. Bartica Grove, Brit. Guiana, Salvin-Godman Ooll. 



Dec. {H. Wldtely). 



e. S ? ad. sk. Camacusa, Brit. Guiana, April Salvin-Godman CoU. 



(//. Whitelij). 

 f. $ ad. sk. Merume ^Its., Brit. Guiana, Salvin-Godman Coll. 



June(Zr. Whitely). 

 (J. 2 ad. sk. Barra do Rio Negro, Brazil, Salvin-Godman Coll. 



Oct. {Natterer). 

 h. (S ad. sk. Capim River, Juae ( Wallace). Salvin-Godman Coll. 



Subsp. a. Odontophorus marmoratus. 



Ortyx (Odoutopborus) marmoratus, Gould, P. Z. S. 1843, p. 107 



[Santa Fd de Bogota]. 

 Odontophorus packyrhynchus, Tschudi, Fauna Peruana, p. 282 



(1844-46) ; Gould, 3fono(/r. OJontoph. pt. iii. pi. 24 (1850) ; Grat/, 



List Gidlince Brit. Mm. p. 71 (1807) ; id. lland-l. B. ii. p. 271 



(1870) ; Tacz. P. Z.S. 1874, p. 558 [Monterico, Ceuti-al PeruJ; id. 



Orn. Perou, iii. p. 287 (1886). 

 Odoutopborus guianensis, Lawrence {nee Gin.), Ann, Lye. N. York, 



vii. p. 301 (1862) [New Granada]. 

 Odontophorus marmoratus, Sclat. ^- Salvin, P. Z. S. 1864, p. 371 



[Panama] ; Gray, List GaUin<e Brit. Mus. p. 71 (1867) ; id. 



Iland-l. B. ii. p. 271 (-^870); Saloin, P. Z. S. 1870, p. 218 



['3ugaba, Chiriquil; Sclat. 4" Salvin, P. Z. S. 1879, p. 545 [Re- 



medios, AntioquiaJ, p. 641 [Yuyo, Bolivia]. 



Adult male and female. This form appears to intergrade with 

 0. guianensis, but more material is required before the question can 

 be satisfactorily settled. The characters by which the present sub- 

 species is apparently dist'nguished are that the sides of the head and 

 chin are rust-red, the general colour of the underparts darker and 

 almost invariably barred witli black and buff, thoagh amongst the 

 series before us we find a specimen from Lion Hill, Panama, which 

 so closely approaches typical 0. yulanensis that it cannot be distin- 

 giiished. No doubt the present foi-m is barely subspecifically distinct 

 from Guiana birds, and is absolutely identical with 0. luichy rluj nclius, 

 Tscliudi, from Peru. Total length 11 inches, wing 6-2, tail 3, 

 tarsus 1-7, middle too and claw 1*8 *. 



An immature bird differs chieffy in having the crest and top of 

 the head uniform dark reddish brown, very faintly vermiculated 

 with dusky ; the mantle grey, slightly washed with sandy brown 

 and with very faint or almost imperceptible dusky vermiculations ; 

 the dull reddish-brown middles of the outer secoudarios sharply 

 defined from the black marg'nal lines and almost devoid of black 

 vermiculations ; the loner weos. of the quills, especially the outer 



* Specimens from Panama are considerably smaller than those from the U.S. 

 of Colombia. A Pan.imn male has the wing 55, tail 27. The marked differ- 

 ence in size between the sexes observed in 0. guiancmis does not apparently 

 obtain in the present form, judging from Pnnaina specimens only, as none of 

 our specimens from the U.S. of Colombia are marked as females. 

 VOL. iXU. 2 F 



