120 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



Contopus richardsonii peninsulae Bbewst. 



Large-billed Wood Pewee. 



[Pj/rocephalus] richardsoni Gray, Hand-list, pt. I. 1869, 362, no. 5,510, part. 

 \_Contopus virens'\ var. richardsonii Coles, Key N. Ainer. Birds, 1872, 174, part. 

 Contopus virens, var. richardsonii Coces, Check List, 1873, 53, no. 255 a, part. 

 Contopus richardsoni Ridgway, Nom. N. Amer. Birds (Bull. U. S. Nat. Mus., no. 21), 



1881, 31, no. 321, part. 

 Contopus virens richardsoni CocES, Check List, 2d ed., 1882, 70, no. 383, part. 

 Contopus richardsonii A. O. U., Check List, 1886, 234, no. 462, part. 

 Contopus richardsonii peninsulae Brewster, Auk, VIII. 1891, 144, 145 (orig. descr. ; 



types from Sierra de la Laguna and Triunfo). A. O. U. Comm., Auk, IX. 



1892, 106, no. 462 a; Check List, 2d ed., 1895, 187, no. 462 a. Ridgway, 



Man'. ]Sr. Amer. Birds, 2d ed., 1896, 598 (descr.; S. Lower Calif.). 

 C.lpntopusi v.\_irens'] richardsoni Coce3, Key N. Amer. Birds, 4tli ed., 1894, 440, part. 

 Horizopus richardsonii peninsulae Oberholser, Auk, XVI. 1899, 333 (synonymy). 

 [Contopus virens'\ va,T. peninsulae Dubois, Synop. Avium, fasc. IV. 1900,249 (Basse- 



Californie). 

 [fforizopus] peninsulae Sharpe, Hand-list, III. 1901, 142. 



This near ally of C. richardsonii was discovered by Mr. Frazar on the Sierra 

 de la Lagiina, where it appeared about the middle of May, the males arriving 

 nearly two weeks in advance of the females. It soon became very common, 

 frequenting open places in the woods, and usually taking its station at the ex- 

 tremity of some dead branch. Its note is " a sharp, cutting pee-ee-e, the second 

 syllable with a falling, the last with a rising, inflection." On June 9 while 

 descending the mountain Mr. Frazar found these Flycatchers common to its base 

 as well as afterwards at Triunfo and San Jose del Eancho. An adult female 

 killed on June 20 at Triunfo was incubating, but no nests were found. 



The Large-billed Wood Pewee has not been reported as yet from anywhere 

 outside the Cape Eegion, but if, as the above evidence indicates, it is a migra- 

 tory bird, it must also occur in Mexico and Central America. 



Mr. Bryant records C. richardsonii from San Sebastian and a few localities in 

 the northern part of Lower California. 



Empidonax difficilis Baird. 



Western Flycatcher. 



(?) Empidonax difficilis Beldivg, Proc. U. S. Nat. Mus., V. 1883, 542, part (Cape 

 Region) ; VL 1883, 348, part (Victoria Mts.). Bryant, Proc. Calif. Acad. 

 Sci., 2d ser., IL 1889, 291, part (Cape Region). 



Of true E. difficilis I have seen only six Lower California specimens, all of 

 which were collected by Mr. Frazar, — one at Santiago on November 15, the 



