PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 103 



the occiput, whore the pale brownish buff spots are very large aud the 

 darker markings correspoudiugly reduced in size. Beneath whitish, 

 the feathers with ragged mesial streaks of blackish and transverse ver- 

 miculations of the same. 



Rufous phase; adult. — Above cinnamon-rufous, with blackish shaft- 

 streaks. Beneath white, with blackish mesial streaks and irregular 

 transverse base of rufous aud blackish. 



Remarks. — This very distinct race, which 1 refer somewhat doubt- 

 fully to 8. hrasilianus, so closely resembles 8. maccalli, both in size and 

 colors, that, were it not for the perfectly naked toes, certain specimens 

 of the two could scarcely be distinguished. From 8. harbarns, with 

 which it agrees in the nakedness of the toes, it may be readily distin- 

 guished by the much stouter feet (both relatively and absolutely), as well 

 as by certain well marked differences in the coloration. Of the other 

 races of brasilianus, it most closely resembles the one we have described 

 under the name ai atricapiHus (see p. 95), having, like that st\le, a very 

 distinct lighter nuchal collar. It is considerably smaller, however, and 

 presents well marked differences in coloration, which may be expressed 

 as follows : — 



S. ATRIOAPILLUS. — Wing, 6.80; tail, 4.00; tarsus, 1.15; middle toe, 

 .80. Ground-color below pale buff; face and crown nearly uniform 

 dusky. i/a6., Brazil. 



S. CASSINI.— Wing, 5.80-6.10; tail, 3.20-3.50; tarsus, 1.20; middle 

 toe, .80. Ground-color below white; face grayish or brownish white, 

 coaisely barred with dusky ; crown coarsely spotted with blackish, pale 

 brown, and grayish-white. Hob., Eastern Mexico. 



It will be seen by the above, that while cassini has the wing and tail 

 very much shorter than in atricapUlus, the feet are, on the other hand, 

 actually longer, the two birds thus having quite different proportions, 

 in view of which fact it may ultimately prove advisable to recognize in 

 8. cassini a distinct species. Compared with 8. barbarus. which is 

 sometimes exceedingly similar in plumage, the difference in the feet is 

 still more striking; while the only other form which resembles it — 8. 

 maccaUi — has the toes distinctly bristled, whereas in the i)ieseut form 

 they are perfectly bare. 



Mirador, Mexico ' fi. 10 3. 50 . 50 1. 20 .80 



....do I Xov. — , 18(i3 5.90 3.40 .45 1.20 .80 



Jalapa, Mexico Apr. 9,1869 5.80 3.20 . 50 1. 20 .80 



3. SCOPS BAKBARUS. 



" Scopa flammeoJa", Salvin, Ibis, 18(31, Huf) {iicc Licbt.). 



Scops barbarus, Sci>. & Salv., P. Z. S. 18t)8, 57 : Ex. Orn. I, IfcGS, 101, pi. li ; Norn. Neotr. 



1873, 117 {Guatemala).— GnAY,nna(l-\. I, 18G9, 47.— Siiarpe, Cat. Strig. Brit. 



Mus. 1875, 107 {Sta. Barbara, Vera Paz, Guatemala). — Bouc, Cat. Av. 187(5,91. 



Habitat. — G uatem al a. 



Diagnosis. — Wing, 5.25-5.60; tail, 2.90-3.10; culmen, .45; tarsus, 

 1.00-1.05; middle toe, .70-.75. 8hafts of the auriculars produced into 



