BROAD-BILLED HUMMINGBIRD 465 



the individuals noted casually in Arizona) are a distinct race to which 

 the name H. I. horealis has been given. The birds found in Nicaragua 

 also have been recognized as a distinct subspecies. 



Casual records. — The species has been recorded a number of times 

 from southeastern Arizona as follows: The first United States speci- 

 men was collected on June 9, 1894, at Fly Park, in the Chiricahua 

 Mountains; one was taken in the Santa Rita Mountains on June 24, 

 1903 ; in 1915 a specimen was taken in the Santa Catalina Mountains ; 

 during the period from June 10 to December 31, 1919, 12 specimens 

 were obtained in the Huachuca Mountains ; and on August 11, 1933, 

 an adult male was captured in Miller Canyon, of the Huachucas. 



Egg dates. — Chihuahua and Sinaloa: March 26, May 23 and 

 August 12 (Moore). 



Guatemala: Sierra de Tecpan, Department of Chimaltenango, 

 west-central Guatemala, 8,000-9,000 feet: 12 records, November and 

 December. In 1933, nest building began about the middle of October. 

 The earliest date of laying for which there is a record (computed 

 from date of hatching) is about October 23 ; the latest, December 22 

 (Skutch). 



CYNANTHUS LATIROSTRIS Swainson 

 BROAD-BILLED HUMMINGBIRD 



HABITS 



Robert T. Moore has kindly lent me a portion of his unpublished 

 manuscript on the life habits of the birds of Sinaloa, and, with his 

 permission, I am quoting from it most of what follows in the account 

 of this species. As to the subspecific status of our form of the broad- 

 billed hummingbird, he writes: "The comparison of our large series 

 of 31 males and 24 females from northwestern Mexico, with 9 males 

 and 3 females in the Moore collection, as well as others, from east- 

 central Mexico, has convinced me that the northwestern birds, orig- 

 inally given the name of magica by Mulsant and Verreaux, should be 

 differentiated on the basis of darker-green posterior underparts, 

 whiter under tail coverts, and definitely smaller size. The Arizona 

 form resembles this northwestern Mexican bird, rather than the 

 eastern." 



As to Ills personal experience with it in the field, he says: "My 

 first acquaintance with the broad-billed hummingbird was made at 

 the base of the great Butte, at Pefia Blanca Spring, southern Ari- 

 zona. A large group of ocotillos fringed the eastern ledges below 

 the cliff, their red pennants providing an irresistible attraction. The 

 birds did not seem to be interested in any other flowers. My real 

 knowledge of the habits of this hummingbird has been acquired in 

 the States of Sonora, Sinaloa, and Chihuahua, of northwestern 

 Mexico. 



178223—40 36 



