( 328 ) 



This bird stands somewhat between D. r. rufigida, from the Guianas, etc., and 

 D. r. (leciUei, from Upper Amazonia. It agrees with the latter in the pale greyish 

 colonr of the bill, and in having the white markings below restricted to the fore- 

 neck ; however, the ground-colour of the lower parts is pale brown (not tinged with 

 ochraceous), the throat shows half-concealed white spots, and the hindneck as well 

 as the sides of the neck are streaked with white. lu all these points it resembles 

 D. r. i-iijiqtda, bat the white markings are narrower, and those on the hindneck 

 have no or scarcely any black lateral edges. 



On the left bank of the Rio Madeira another form takes its place : — 



[189. Dendrexetastes rufigula devillei (Lafr.). 



Dendrocolaptes Devillei Lafresnaye, Rev. Mag. Zonl. (-2) ii. p. 102 (1850.— Saraya9u, Eastern 



Peru). 

 Dendrexetastes devillei Hellmayr, Nov. Zool. xiv. 1007. p. 366 (Humaytha). 



Left bank of the Rio Madeira : Humaytha (Hoffmanns), thence through 

 Western Brazil (Bom Lugar, Rio Puriis •) to Eastern and Northern Peru 

 (Saraya(,'n, Icjuitos, Samiria, etc.).] 



[Having lately examined specimens of the three forms of Demlrexet'istes, I 

 think a few words about their distinguishing characters may be welcome to 

 ornithologists. 



(a) L). rujiyula rufigula (Less.). 



Syn. Dendroi:olaptes Temmiiickii Lafresnaye, Rev. Mag. Zool. (2) iii. p. 14.S. pi. iv. (March 1851.— 



" Santa Fe de Bogota''— errore !). 

 Dendrexetastes capitoides Eyton, Contrib. to Ornith. 1851. p. 76 (autumn 1851.— no locality). 



Hab. French Guiana : (Jayenne (I/esson, etc.), Ouanary (Geay) ; Surinam : 

 near Paramaribo (Chnnkoo; two sjjecimens in Tring Museum); British Guiana: 

 Mines District (two specimens in Tring Museum). North Brazil : Barra do Rio 

 Negro = Manaos (Natterer). 



Characters. This form is characterized by having the foreneck and chest 

 thickly covered with large, oval, whitish spots, bordered by a very distinct black 

 line ; the chin only is uniform rusty buff, while the throat shows half-concealed 

 white shaft-streaks ; nape and sides of neck with consjjicuous, slightly jioiiited, 

 whitish stripes, more or less distinctly edged laterally with black ; ground-colour 

 of lower parts pale brown with a faint ochreous tinge. Upper mandible dark horn- 

 brown ; lower one yellowish grey, darker at base. 



Obs. Specimens from British Guiana and Manaos are practically identical. 

 Two from Surinam differ by having slight dusky cross-lines in the middle of the 

 abdomen and on the under "tail-coverts. The sides of the head, including superciliary 

 and temporal regions, are uniform earthy brown in 7*. ;•. rufigxlrt, though in one 

 specimen each from Surinam and British Guiana a few narrow whitish lines are to 

 be noticed along the ujiper margin of the ear-coverts. 



Wing. Tail. Bill. 



!. c^ ad., Paramaribo .... ln(5 110 32 mm. 



liDtn. ,, .... lull I (II) (moulting) 31 „ 



3,4. Adults, Mines District, British Guiana lOo, 109 108,112 30,32 „ 



5. tJ ad., Barra do Rio Negro (Natterer) . lO.J 114 damaged,, 



• Snethlage, 7nKr« /. 0;«. 1908. p. H. 



