BIRDS OF NORTH AND MIDDLE AMERICA. 439 
bb. Abdomen white. 
c. Tail purplish black; under tail-coverts grayish. (Northwestern Colombia to 
southern Costa Rica.)..........-+----+---- Saucerottia niveoventer (p. 441). 
ce. Tail metallic coppery bronze; under tail-coverts cinnamomeous. (Panama 
to western Ecuadér.)....-....-..-...-.22---- Saucerottia edwardi (p. 443). 
aa. Remiges (except outer primaries) cinnamon-rufous or chestnut basally. 
b. Tail dark steel blue or metallic blue-black. (Saucerottia cyanura.) 
c. Secondaries cinnamon-rufous tipped with black; primaries mostly dusky 
glossed with purplish; general coloration lighter. (Costa Rica and Nicara- 
GUS: ). ows eedesecaseewere sees seteree Saucerottia cyanura cyanura (p. 445). 
cc. Secondaries with at least terminal half blue-black, the basal portion chestnut; 
primaries mostly blue-black; general coloration darker. (Guatemala and 
ChIGPAS:) sve. scscueestmeweceess Saucerottia cyanura guatemalz (p. 446). 
bb. Tail bronzy or partly chestnut. 
ce. Tail extensively chestnut basally. 
d. Abdomen wholly green, like anterior under parts; middle rectrices and tips 
of other rectrices rich metallic purplish bronze or bronzy purple. (Guate- 
mala and Chiapas.)........-.--.-.---------- Saucerottia devillei (p. 447). 
dd. Abdomen cinnamomeous or grayish; middle rectrices and tips of other 
rectrices duller coppery bronze or dull metallic violet. (Saucerottia 
beryllina.) 
e. Middle rectrices and tips of other rectrices coppery bronze or reddish 
bronze; abdomen more cinnamomeous; green of upper and under parts 
more yellowish. (Eastern and central Mexico.) 
Saucerottia beryllina beryllina (p. 449). 
ee. Middle rectrices and tips of other rectrices purplish or violaceous bronze; 
abdomen more grayish; green of upper and under parts less yellowish. 
(Western Mexico.).......--..------ Saucerottia beryllina viola (p. 451). 
cc. Tail without chestnut or with only shafts and basal portion of outer web of 
lateral rectrices chestnut. 
d. Tail bright metallic coppery bronze; under tail-coverts pale ‘cinnamon- 
rufous; throat mostly green. (State of Oaxaca, southern Mexico.) 
Saucerottia sumichrasti (p. 451). 
dd. Tail metallic bronzy olive-green, with shafts and basal portion of outer 
webs of lateral rectrices chestnut; under tail-coverts pale greenish 
bronze; throat mostly white. (State of Vera Cruz, Mexico.) 
Saucerottia ocai (p. 452). 
SAUCEROTTIA SOPHIZ SOPHIZ (Bourcier and Mulsant). 
SOPHIA’S HUMMING BIRD. 
Adult male.—Above deep metallic green (nearly grass green) the 
lower rump more bronzy, sometimes coppery bronze or purple; 
upper tail-coverts and tail dark steel blue; remiges very dark brown- 
ish slate or dusky, glossed with bluish or violet; under parts bright 
metallic green, the feathers of chin and upper throat more or less 
edged or margined with grayish white, especially along median line; 
femoral and lumbar tufts white; under tail-coverts dark steel bluish, 
margined with pale grayish; maxilla dull black, mandible pale 
brownish or dull whitish (pink or reddish in life), blackish or dusky 
terminally; iris dark brown; feet dusky; length (skins), 91-97 (94); 
wing, 53-56.5 (55); tail, 29.5-32.5 (30.9); culmen, 18-20.5 (19.1). 
a Ten specimens. 
