PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 141 



erage, 92).* Sab. — Mexico (including Lower Eio Grande Valley in 

 Texas) and Guatemala. 



The principal references to var. erythroeercus are the following : — 



fTyrannula h-ritabilis, Bonap., Consp. I, 1850, 189. Supposed to belong here from 

 quotation of Azara. " South America." Not Tyrannus irritabilis, Vieill. ! 

 Myiarchus crinitus, b. var. irritabilis, Coues, P. A. N. S. July 2, 1872, 65 (Central and 

 South America, Paraguay, Rio Parana, Bahia, Venezuela, Yucatan, Guate- 

 mala, Costa Rica). 



Myiarchus crinitus var. irritabilis, B. B. & R., Hist. N. Am. B. II, 1874, 331 (Paraguay 

 to Costa Rica). 



Myiarchus erythroeercus, Scl. & Salv., P. Z. S. 1868, 631, 632 (Venezuela); Nom. Neotr. 



1873, 52.— ? Semper, P. Z. S. 1871, 271 (Sta. Lucia, W. I.I) ; 1872, 650. 

 Pyrocephalus erythroeercus, Gray, Hand-list, I, 1869, No. 5522 (s. g. Myionax. Quotes 



"crinitus, p., Hartl. ; irritabilis, p., Bp.; ferox $ , Burm."). 

 Pippene gran-bois, St. Croix vernac. {fide Semper, I. a). 



112. Myiarchus cinerascens, Lawr. 



Only two specimens of this variety were taken. — (M. mexicanus, Dres- 

 ser, Ibis, 1865, 473.) 



113. Pyrocephalus rubineus var. mexicanus, Sclat. 



Eesident, but more abundant in summer than in winter. During the 

 breeding season, the male frequently utters a peculiar twittering song 

 while poised in the air about thirty feet from the ground ; during the song, 

 it frequently snaps its bill as if catching insects. Its note of anger and 

 alarm is a mew. Except during the breeding season, tbe birds are 

 decidedly shy. The nests are usually placed upon horizontal forks of 

 ratama-trees, growing upon the edge of a prairie, and rarely more than 

 six feet from the ground. They bear considerable resemblance to nests 

 of the Wood Pewee in appearance and in the manner in which they are 

 saddled to the limb ; the bottoms are made of small twigs, over which 



* Eighteen specimens, as follows : — 



Locality. 



Date. 



9100 

 29090 

 373u4 

 52810 

 1182 

 5387 



57040 

 58644 

 58845 



5ytii7 i 



73G31 

 73632 

 73633 

 42537 

 71138 

 73022 

 49312 



— ad. 



— art. 



— ad. 

 cT ad. 

 cf ad. 

 -ad. 

 cf ad. 

 ? ad. 

 cf ad. 

 cf ad. 

 -ad. 

 cf ad. 

 cf ad. 

 cf ad. 



— ad. 

 ? ad. 

 cf ad. 



— ad. 



TJ. S. 

 U. S. 



u. s. 

 u. s. 

 R. r. 

 R.R. 

 R.R. 

 U. S. 

 TJ. S. 

 TJ. S. 



u. s. 

 u. s. 



TJ. S. 

 U. S. 



u. s. 

 u. s. 



TJ. S. 

 TJ. S. 



" Mexico " (If. cooperi, Baird, B. N. Am.). 



Mexico 



Tres Marias, Western Mexico 



Mazatlan, Mexico 



do 



Tehuantepec, Southern Mexico 



do 



do 



do 



do 



do 



do 



do 



do 



Guadalajara, Southern Mexico 



Fort Brown, Texas 



do 



Central Guatemala 



Jan. 



1865 



Dec. 

 Dec. 

 Dec. 

 May 

 Apr. 

 Oct. 

 Apr. 

 May 

 May 



18, 1868 

 24, 1868 

 16, 1868 



5, 1869 

 27, 1869 



8, 1869 

 11,1871 

 27, 1871 

 27, 1871 



4. 10 

 4. 05 

 4. 10 

 4. 30 

 4. 30 

 4. 05 

 4. 00 

 4.25 

 3. 85 



4. 00 



May 10, 1877 

 Apr. 1,1876 



4. 05 



4.15 



05 

 20 

 •20 

 40 

 05 

 25 

 55 

 00 

 4. 30 

 4. 25 

 4.20 

 4. 60 

 4. 15 

 4. 60 

 4. 20 



4. 15 



. 70 

 .70 

 .72 

 .65 

 .75 

 .60 

 .72 

 .68 

 .68 

 .68 

 .75 

 .73 

 .82 

 .65 



62 



90 



