PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 473 



Meliltarclius crassirostris, Caban., J. f. O. 1855,478. — Cabax. & Heine, Mus. Hein. 



II, 1859, 80, footnote (Mexico). 

 Mcgarhynchus crassirostris, Fixsch, Abli. Nat. Brem. 1870. 329 (Mazatlan). 

 "lluscicapa gnatho, Liciit., in Mus. Berol." (Caban. and Heine). 



Sp. Ch.— Length, about 9.50; extent, 15.50; wing, 5.00-5.50: tail, 4.00- 

 4.50 j bill, from nostril, .75-.81, depth at base .38-43, width .53-.G0. 

 Tail even, or very slightly emarginated; two to three outer primaries 

 slightly narrowed at ends, and the edge of the inner web faintly sinuated 

 near the middle. Adult: Above, olivaeeous-gray, the head darker, 

 approaching sepia-brown, especially on the auriculars ; wings and tail 

 darker and more brownish than the back, all the feathers faintly edged 

 with pale brownish. Malar region, chin, and throat pure white ; jugu- 

 lum pale ash-gray, tinged with light yellowish olive laterally and pos- 

 teriorly ; rest of lower parts, including lining of wing, clear, rather 

 pale sulphur-yellow. Crown with a conc ealed patch of clear lemon- 

 yellow. Bill brownish black; feet deep black; iris brown. Young: 

 Head pale ash-gray, tinged with light brown, the lores and auriculars 

 darker ; no colored patch on crown ; back similar to the head, but tinged 

 with olive-green; wing-feathers distinctly bordered with yellowish white 

 (tinged with pale rusty on the coverts) ; tail-feathers edged with pale 

 yellowish fulvous, becoming more rusty around the terminal border of 

 the feathers. Lower parts as in the adult, but the abdomen, etc., mixed 

 with patches (new feathers) of bright lemon- or gamboge-yellow. 



Hab. — Mexico, including both coasts; north to Orizaba and Mazatlan. 



Remarks. — This very strongly marked species is decidedly the most 

 robust member of the genus, although considerably inferior to T. may- 

 niro&ris in general bulk. The bill is peculiarly stout, being almost as 

 deep as it is wide through the base, all its outlines being more decidedly 

 convex than in any other species. 



Following is a list of specimens examined, with measurements : 



29401 



United States. 



d ad. 



Colima 



Jan. — , 1863 



5. 50 



4. 50 



.78 



.GO 



. 38 1 . 78 



. G8 



52807 



....(to 



S ad. 



Mazatlan 





5. 25 



4. 00 



.78 



.54 



.40 | .72 



. G5 



57621 



...do 



o ad. 



Tebuantepec 



Dec." ' t, 1863 



5. 00 



4. 20 



. 75 



.57 



.40 i .72 





57G28 



... .do 



— ad. 



do 



Xov. 24, 18G8 



5. 00 



4. 10 



.81 



.GO 



. 43 . 78 



. G5 



G006G 



. . do 



? ad. 





5.20 



4. 10 





.58 



.75 



.C3 



52806 



... .do 



13. S 



d ad. 

 d juv. 



Mazatlan 







4. 35 



.80 



.53 



.43 .75 



.G5 



Orizaba 



July 13, 18GG 























6. — T YR AXXUS MELAXC IIOLIC US. 

 a. mclancholicus. 

 Suiriri guazu, Azara, Apunt. II, 1805, 152, Xo. 198. 



Tyrannus melancholic us, Vikill., Xouv. Diet. XXXV, 1810, 48 (ex Azara, 1. c.) ; Enc. Moth. 

 BE, 1823, 851.— D'Orb. & Lafr., Mag. dc Zool. 1837, 44.— D'Orr., Yoy. Ois. 

 1839,311.— BUBM., Th. Bras. II, 1856, 4G4 ; Reis. La Plata, II, 1861,452.— 

 Baird, B. X. Am. 1858, 176 (port — not deser.). — Scl., Catal. 1862, 235, No. 

 1443 (Brazil).— Scl. &Salv., P. Z. S. 1838, 142 (Bnenoa Ayres); Norn. Neotr. 

 1873, 53 (part).— Euler, J. f. O. 1887, 227 (Brazil ; (loser, nesting, etc.).— PELS., 

 Orn. Bras. 1871, 117 (S. Brazil; numerous loealities). 



