G. SIPIIOXORHIS. 



h'\ 2 ad. sk. Pelotas, Kio Grande do Sul 



{Joijner). 

 i'. $ ad. St. Brazil. 



k''-m^. c? ; n\ 2 Brazil. 



ad. sk. 

 o'\ Skull. S. America. 



591 

 Salvin-Godman Coll. 



Lord Stuart de 

 Kothesay [P.]. 

 Salvin-Godinan Coll. 



Purchased. 



Subsp. a. Nyctidromus merrilli. 



Nyctidroinus albicolli.s, Merrill, Bull. Nutt. Orn.Club, i. p. 88 (1876 ; 



'Texas); id. Pr. U. S. Nat. Mus. i. p. 143 (1878; S. Texas). 

 Nyctidrumu.s albicolli.s merrilli, Semictt, Auk, 1888, p. 44 (Texas) ; 

 C/iapmcm, t. c. p. 402. 



Adult male. Distinguished by the prevailing grey colour of the 

 upper surface, especially the verj' grey crown and mantle and the 

 light-coloured central rectrices, by its large size, by the bars on the 

 abdomen being less numerous, and by the outer pair of rectrices 

 in the male having generally little or no white at all. Wing 6'6 

 to 7'4 inches, tail 7. 



Adult female. A little smaller than the male ; outermost rectrices 

 barred vrith buff, the next pair tipped with white ; white throat-patch 

 more restricted in size ; colours of the upper surface less brilliant. 



Younger individuals are more fulvous, the wing-patch shaded 

 with fulvous, the outer rectrices barred or showing remains of bars. 



Hie nestling is covered with buff down, much darker and almost 

 fulvous above. 



This is a well recognizable grey and rather large northern form, 

 but it cannot be raised to specific rank since most of the specimens 

 from Mexico and many from Yucatan are intermediate, and a sharp 

 line cannot be drawn ; they gradually merge into the southern 

 form. I have not yet seen the well-pronounced rufous phase from 

 Texas. 



Hab. Southern Texas and Northern Mexico. 



a-k. (5 5 ad. sk. Brownsville, Texas (F. B. Arm- Salvin-Godman Coll. 



stronf/). 

 I. S ad. sk. Benavides, Texas {F. B. A.). Salvin-Godman CoU. 



m-o. S; p- 2 iiiia.lgOjTexa.s (F. B. A.). Salvin-Godman Coll. 



ad. sk. 

 q,r. (5; s, t. $ San Patricio, Texas, Dec. {F. Salvin-Godman Coll. 



ad. sk. B.A.). 



u, V. c?; ic, X. 2 Corpus Christi, March {F. Salvin-Godman Coll. 



ad. sk. B. A.), 



y. 2 ad. sk. Nuevo Leon, Mexico, June 11 Salvin-Godman CoU. 



(F. B. A.). 



0. SIPHONORHIS. 



Type. 



Siphonorhis, Sclater, P. .2. <S'. 1861, p. 77 S. americ 



The bill is extremely broad at base, the tip strong and heavily 

 decurved ; nostrils tubular and very prominent : rictal bristles 



