PROCEEDIKGS OF UNITED STATES NATIONAL MUSEUM. 249 



Following is a list of the specimens examined : — 



a. rufivirgata. 



* The tirst number indicates the length of the bill from the nostril; the second, its depth through the 

 base. 



(3. crassirostris. 



tThis specimen is somewhat intermediate in coloration between rufivirgata and crassirostris, bnt 

 seems decidedly nearer the former. It differs from both, however, in tUe very sharp definition of the 

 stripes on the head, which, however, are clear, uniform chestnut, and in the bright baS yellow cast of 

 the crissum and tibia. It is quite possible that this specimen, which is not in good condition, may rep- 

 resent a fourth race, peculiar to Western Mexico. 



y, verticalis. 



30282 



37894 



U.S. 

 U.S. 

 KR. 



? ad. 

 cT ad. 

 9 ad. 



Merida, Yucatan . 



do 



do 



0.35X0.26 I 0.85 



0.40X0.28 



0.40X0.28 



0.90 

 0.95 



0.60 

 0.60 



Following are the chief references to this species: — 



a. rufivirgata. 



Enibernagra rufivirgata, Lawr., Ann. Lye. N. Y. April 28, 1851, 112, pi. v, fig- ^ (Kio 

 Grande, Texas).— Bairp, B. N. Am. 1858, 487 (Ringgold Barracks, Texas ; Naevo 

 Leon, N. E. Mexico); Mex. Bound Survey, II, Birds, 1859, 16, pi. xvii, fig. 2; 

 Cat. N. Am. B. 1859, No. 373.— Butcher, Pr. Ac. Nat. Sci. Phil. 18G8, 150 (La- 

 redo, Texas).— CouES, Key, 1872, p. — ; Check List, 1873, No. 209.— B. B. & R. 

 Hist. N. Am. B..II, 1874, 47, pi. xxviii, fig. 3.— Merrill, Bull. Nutt. Orn.Club, 

 I, Nov. 1876, 89 (Ft. Brown, Texas; descr. nest and eggs) ; Proc. U. S. Nat. 

 Mus. I, 1878, p. 128 (Ft. Brown, Tex. ; biogr.).— Sennett, Bull. U. S. Geol. 

 and Geog. Survey Terr. IV, No. 1, 1878, 22 (Brownsville and Hidalgo, Texas ; 

 common). 



Brown-striped Olive Finch, Lawr., I. c. 



Texas Finch, Baird, I. c. 



Green Finch, CoUES, I.e. 



/3. crassirostris. 



f " Zonotrichia pleicja, LiciiT.", Boxap., Compt. Rend. XLIII, 1856, 413.* 

 " Enibernagra rufivirgata", Scl., P. Z. S. 1856, 306 (Cordova) ; 1859, 380 (Playa Vicente) ; 

 Catal. 1861, 117, No. 709 (Orizaba).— Lawr., Bull. U. S. Nat. Mus. No. 4, 1876, 

 22 (Huemelula, Isth. Tehuantepec).— Sumiciir., Mem. Bost. Soc. I, 1869, 551 

 (Vera Cruz ; temp, and hot reg., up to 1,200 metres). 

 Enibernagra rufivirgata var. crassirostris, Baird, MS. 



y, verticalis 



" Enibernagra rufivirgata ", Lawr., Ann. Lye. N. Y. IX, 1869 (Merida, Yucatan). 



* I have at present no means of verifying this reference, and therefore adopt, provi- 

 sionally at least. Professor Baird's MS. name of crassirostris. 



