BIRDS OF NORTH AND MIDDLE AMERICA. 



371 



the sides of chest glossed (more or less) with metallic green or bronze- 

 green; under tail-coverts mostl}^ dull white (grayish centrally); anal 

 tufts and tuft on each side of rump white; a white or grayish white 

 postocular spot, and below this a dusky area extending to beneath 

 eye; maxilla dull black, sometimes brownish basally; mandible 

 dusky for terminal half (more or less), brownish (reddish in life) 

 basally; iris and feet as in adult male; length (skins), 85-104 (93); 

 wing, 49.5-54 (51.6); tail, 27.5-33 (30.3); culmen, 19.5-23.5 (21.4).« 



Young male. — Similar to the adult female but feathers of pileum, 

 hindneck, back, scapulars, rump, etc., tipped or terminally margined 

 with pale buffy brown or grayish bulT; rectiices as in adult male; 

 chin and throat (in older s])ecimens) intermixed with metallic bluish 

 green or greenish blue feathers, these margined terminally with pale 

 graj^ish or buily brown. 



Young female. — Similar to the adidt female but feathers of upper 

 parts margined terminally or tipped with pale buil'y brown (some- 

 times more cinnamomeous on i)ileum and rump). 



Mexico in general, except extreme southern States of Oaxaca, 

 Tabasco, Chiapas, Campeche, and Yucatan, north to southern Ari- 

 zona (Santa Rita, Huachuca, Chiricahua, and Santa Catalina moun- 



« Nineteen specimens. 



Locality. 



MALES. 



Six adult, males from Arizona 



Seven adult males from Nuevo Le6n, Tamaulipas, and San Luis I'otosi 



Two adult males fiom Michoacau 



Seven adult males from Sinaloa (C latirostris magicus) 



Four- adult males from Colima ( C. latirostris magicus) 



One adult male from Guerrero {VA Lini6u) ( C. latirostris magicus) 



FEMALES. 



Six adult females fi'om Arizona 



Two adult females from Nuevo Le6n 



One adult female from Hidalgo 



Five adult females from Jalisco (1) and Michoacan (4) 



Wing. 



51.1 



b2. 7 

 5.5 



4',). 9 

 50. 9 

 50 



Tail. 



31. C. 

 33.1 

 34.5 

 31.1 

 31.7 

 31.5 



28.7 

 31.5 

 33 

 30.5 



Ex- 

 posed 

 culmen. 



21.4 

 20.3 

 21.2 

 19.3 

 19. 9 

 19 



21.7 

 20.5 

 21 

 21.3 



Thi'ee adult males from the extreme southeastern portion of the range of the species 

 (Jaumave, Tamaulipas; Hacienda Angostura, San Luis Potosi, and Valley of Mexico) 

 differ from all others in the collection in the decidedly greenish blue of the throat, 

 which is colored nearly as in the adult male of C. lawrencei. Should other specimens 

 from the same geographic area agree with these in this respect, a southeastern form 

 would undoubtedly require recognition. Unfortunately no other specimens are 

 available for examination. 



Specimens from the state of Sinaloa average considerably smaller than those from 

 other localities, but those from Colima, Guerrero, and Arizona are nearly as small, and 

 at present, in the light of material examined, I hardly feel justified in accepting a 

 Bubspecies C. I. viagicus for the Sinaloa birds. It may be, however, that more satisfac- 

 tory material will show that two, possibly thi-ee, forms can be satisfactorily defined. 



