248 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



Panama 



Verasua (Santa r6) 



do 



Panama 



Veragna (Santa F6) 



3.45 

 3.35 

 3.45 

 3. 25 

 3.25 



3.80 

 3.70 

 3.80 

 3.40 

 3.75 



0.60 

 0.55 

 60 

 52 

 0.52 



1.00 

 1 05 

 1.10 

 1.00 

 1.05 



(3. schistacea. 



Sierra Madre, Coliraa 



Mazatlau 



Sierra Madre, Colima 

 Mazatlan 



Apr. — , 1863 

 June—, 1862 

 Apr. — , 186:! 

 June — , 1862 



3.45 

 3.50 

 3.60 

 3.45 



3.90 

 3.80 

 3.75 

 3.75 



0.60 



0.65 



1.00 

 l.CO 

 1.00 

 1.00 



0.70 

 0.75 

 0.80 

 0.75 

 0.75 



0.70 

 0.70 

 0.75 

 0.70 



EMBERNAGRA RUFIVIRGATA, Lawr. 



Specimens liom Meritla, Yucatan, of which there are three before trie, 

 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 blacli — anteriorlj^, 

 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 trom Mexico. 



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

 head-stripes and in the color of the bdl and ieet, but they aie very 

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

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

 dee[) 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 lollows: — 



A. Maxilla leddisb-biowu; lej^s and feet jmle brown. Stripes of the bead not bbarply 



defined, uuiforiu reddish umber-brown, the broad vertictil stripe olive- 

 green throughout, or only tinged with ash anteriorly. 



«. rufivirgata. — Bill slender, its depth .25, the length of the ujaxilla from the 

 nostril to the tip being .3r>-.38. Flanks pale grayisb-bufi", or light grayish- 

 fulvtus; crissum pale buff. Wing, 2.G0-2.G5; tail, 2..50-2.70 ; tarsus, 

 .90-.95; middle toe, .tiO. Bah. — Rio Grande Valley of Texas. 



/3. crassiroslri.-i. — Bill very stout, its depth .28-.;?:?, 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, 2.55-2.7.5; tail, 2.:)0-2.70; tarsus, 

 .85-.90; middle toe. .58-.(i5. Hab. — Mexico. 



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



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

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

 7'. verticalis. — Bill slender, as in rujirirgata, its depth being ,26-.28; its length from 

 the nostril .3.5-40. Flanks and crissum pale, as in rufivirgata. Wing, 

 2..50-2.G8: tail, 2.fi0-2.80 ; tarsus, .8.5-.96; middle +oe, .60. Hab.— Merida, 

 Yucatan. 



