248 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



Panama 



Verasua (Santa r6) 



do 



Panama 



Veragua (Santa F6) 



/?. schistacea. 



3.45 

 3.35 

 3.45 

 3.25 



3. as 



3.80 

 3.-0 

 3.80 

 3.40 

 3.75 



0.60 

 0.55 

 O.CO 

 0.52 

 0.52 



1.00 

 1.05 

 1.10 

 1.00 

 1.05 



0.70 

 0.75 

 0.80 

 0.75 

 0.75 



Sierra Madre, Coliiua 



Mazatlan , 



Sierra Madre, Colima . 

 Mazatlan 



Apr. — , 1863 

 June— ,1862 

 Apr. — , 1663 

 June — , 1862 



3.45 

 3.50 

 3. CO 

 3.45 



3.90 

 3.80 

 3.75 

 3.75 



0.60 



1.00 

 1.00 

 1.00 

 1.00 



0.70 

 0.70 

 0.75 

 0.70 



EMBEENAGRA EUFIVIRGATA, Lawr. 



Specimens from Merida, Yucatan, of which there are three before me, 

 differ from all other Mexican examples in the collection, as well as those 

 from Texas, in the very sharp definition and dark color of the stripes 

 on the crown, these being a very dark brown — almost black — anteriorly, 

 the broad stripe between a pure ash-gray, without a trace of olivaceous 

 tinge. The bill is also very much darker in color, the maxilla being quite 

 black in some examples, while the feet are also of a darker brown color. 

 In the light grayish color of the flanks and the very pale buff of the cris- 

 sum, these Merida examples agree much more closely with Texas speci- 

 mens than those from Mexico. 



Mexican examples are like those from Texas in the character of the 

 head-stripes and in the color of the bill and feet, but they are very 

 different in their lower plumage, not only from the true rufivirgata, but 

 also from the Yucatan race, the flanks being a dark raw-umber tint, or 

 deep drab, almost like the back, and in strong contrast with the white 

 of the abdomen, while the crissum is of a deep fulvous, or dark grayish- 

 buff". 



It thus appears that three well-marked geographical races of this 

 speies may be defined, their characters being as follows : — 



A. Maxilla reddish-brown; legs and feet pale brown. Stripes of the head not sharply 



defined, uniform reddish nmber-brown, the broad vertical stripe olive- 

 green throughout, or onlj' tinged with ash anteriorly. 



a. rufivirgata. — Bill slender, its depth .25, the length of the maxilla from the 

 nostril to the tip being .3ri-.88. Flanks pale grayish-buflf, or light grayish- 

 fulvous; crissum pale buff. Wing, 2.60-2.65; tail, 2.50-2.70; tarsus, 

 .90-.95 ; middle toe, .60. Hab.— Rio Grande Valley of Texas. 



/3. crassirostris. — Bill very stout, its depth .28-.33, the length of the maxilla from 

 the nostril to the tip being .35-.40. Flanks deep drab, or raw-umber 

 brown; crissum deep fulvous. Wing, 2.55-2,75; tail, 2.30-2.70; tarsus, 

 .85-.90 ; middle toe, .58-.65. Hah. — Mexico. 



B. Maxilla dark brown, or brownish-black ; legs and feet deep brown. Stripes of the 



head sharply defined, black anteriorly, chestnut mixed with black pos- 

 teriorly, the broad vertical stripe clear ash-gray throughout. 

 y. vei'ticalis, — Bill slender, as in rufivirgata, its depth being .26-.28 ; its length from 

 the nostril .35-40. Flanks and crissum pale, as in rvfivirgata. Wing, 

 2.50-2.68; tail, 2.60-2.80; tarsus, .85-.95; middle toe, .60. IZaft.— Merida, 

 Yucatan. 



