678 THE GENUS FORMTCARIUS RIDGWAY. 



oiularies and upper t:iil coverts are less rufescent, tlie reddish -brown 

 color ou sides of neek less iuteuse, the sides more washed with brown, 

 and the under tail coverts very slightly paler and duller. Total length 

 (skin), G.80; wing, S.o,"); tail, 2.12; tarsus, I.IS; middle toe, 0.7."). 



This new form is based on a series of fifteen adult specimens, ten 

 of which are from the island of Trinidad (Frank M. Chapman), one 

 from San Esteban, Venezuela (A. Goering), one from Eemedios, Colom- 

 bia (T. K.Salmon), and two from uidvuown localities. These specimens 

 are so uniform in their characters there can be no doubt that they rep- 

 resent a race easily distinguished from either F. lioff)aanni or F. cris- 

 saJis, though doubtless grading into both, as these almost certaiidy do 

 with other forms. • 



The ten Trinidad specimens are so much alike that the only differ- 

 ences observable are exceedingly slight variations in the amount of 

 reddish tinge to the brown of the upper parts, the size and distinctness 

 of the white loral spot (in none is it nearly so large as in the single 

 exami)le of F.crissal is examined, its average size being about the same 

 as in F. lioffmanm)^ and in the exact hue of the under tail coverts. As 

 to the last-mentioned character, the variation is all but inappreciable, 

 the extremes being what maybe termed deep tawny* and chestnut- 

 tawny. In all the specimens examined, even including those from 

 Venezuela and Colombia and the two from unknown localities, the 

 black of the throat has a very definite i^osterior outline, but is not so 

 shaiply contrasted with the color of the cliest as in F. hoffmannl, nor 

 is there ever any tendency of the rufescent color on the sides of the 

 neck to form an incipient collar across the fore neck, as is often the case 

 in F. hoffmannt. The black of the throat is also much more extended 

 posteriorly, occupying the entire fore neck, than in the single specimen 

 of -F. crissalis, in which the fore neck is slate-gray, like the chest. 



An adult male from San Esteban, Venezuela (A. Goering) and an- 

 other from Eemedios, Colombia (T. K. Salmon), in the collection of 

 Messrs. Salvin and Godman, do not differ from the Trinidad specimens, 

 except that in the former the upper parts are very slightly browner, 

 though the exact hue is aj^proached very closely by one or two S]>eci- 

 mens. 



In the National Museum collection is a specimen from unknown 

 locality which agrees in most respects with this form, but is still more 

 intensely colored, the under tail coverts being rich chestnut and the 

 upper parts a redder brown. It may be more fully described as fol- 

 lows : 



Adult (Xo. 110222, U. S. Xat. :\rus., H. K. Coale).— Above ricli bistre 

 brown, tinged with Vandyke, somewhat darker ou top of head, and 

 deepening on upper tail coverts into a ricli burnt-umber or chestnut- 

 brown; tail seal brown, with a broad terminal l)and (about 0.00 of an 



'"That is, a color a littlo morti saturated tliau tlic ''tawiiy" of luy "Nomenclature 

 of Colors" (I'l, V, Fiii. 1). j 



\ 



