BIRDS OF NORTH AND MIDDLE AMERICA. 281 
Adult male.—Length (skins), 145-160 (152); wing, 65.5-82 (77.1); 
tail, 65.5-78 (73.5); culmen, 13-15.5 (14); tarsus, 15-18 (16.9); 
middle toe, 11-13.5 (12.1).% 
Adult female—Length (skins), 131-156 (142); wing, 66-80 (70.8); 
tail,’ 61.5-75 (67.1); culmen, 13-15 (13.9); tarsus, 15-17.5 (16.2); 
middle toe, 10.5-13 (11.7).° 
Southeastern Mexico, in States of Vera Cruz (Cérdova; Potrero, 
near Cérdova; Jalapa; Miradér; Coftepec; Cofre de Perote; Cuesta 
de Misantla; Sochiapa; Pasa Nueva), Puebla (Metlaltoyuca), Mexico 
(near City of Mexico)?, Oaxaca (Santa Efigénia), Tabasco (Teapa), 
Campeche (Apazote), and Yucatan (La Vega; Izal4m; Chichen- 
Itza), and southward through Guatemala (Chiséc; Chocttim; Savana 
Grande; Pie de la Cuesta in San Marcos; Naranjo; Patulil, Solol4; 
Mazatenango; Los Amates, Yzabél), British Honduras (Orange 
Walk; forest near Manatee Lagoon; Ycacos Lagoon; forest near 
Quamius Creek), Honduras (Santa Ana), and Nicaragua (Sucuy4) to 
Costa Rica (Naranjo de Cartago; Monte Redondo; La Cedral, 
Aserri; Coralillo; Bonilla; Guayabo; Mojica; Dota; Santa Maria de 
Dota; Cerro Santa Maria; Tenério; Bolsén; Volcén de Miravalles). 
Sittasomus sylvioides Larresnayn, Rev. et Mag. Zool., 1850, 590 (Mexico).— 
ReicHensacu, Handb. Spec. Orn., 1853, 177.—SciareR, Proc. Zool. Soc. 
Lond., 1856, 290 (Cérdova, Vera Cruz); 1859, 365 (Jalapa, Vera Cruz); 1864, 
175 (near City of Mexico); Cat. Am. Birds, 1862, 160 (do.).—Sanvin, Ibis, 
a Twenty-three specimens. «a Twenty-two specimens. 
+ Cul- Middle 
Locality. Wing. | Tail. | men. | Tarsus.| “toe, 
MALES. 
Four adult males from Vera Cruz (3) and Puebla (1)..........- 77.5 76 13.6 16.9 11.9 
Two adult males from Guatemala................2.-2..-2-2--0- 75.5 71 14.5 16 11.5 
One adult male (?) from British Honduras..............-.--.-- 65.5 65.5 14 16 12 
One adult male from Honduras..................-22-02202- eee 76.5 72.5 13.5 17.5 12.5 
Four adult males from Yucatan.............-.02.22-22- eee eee 74.4 73 14 16.5 11.6 
One adult male from Nicaragua..............20... 222222 e eee eee 77.5 73 15 17 11.5 
Ten adult males from Costa Rica...........2....-2--2--20--e- 78.9 74 14.4 17.2 12.5 
Six adult males (S. s. levis) from western Panamé............. 84 77.4 15.4 17.7 13 
One adult male (S. s. jaliscensis) from Jalisco, Mexico.......... 84 81 16.5 18.5 12 
FEMALES. 
Three adult females from Puebla...........---.--.---2--+--++- 70.7 68.8 13.7 16.2 11.3 
Two adult females from Canipeche....................2-2-2---- 67.2 66. 2 13.5 15 11 
Two adult females from Yucatan...........2.-.22..222-2-2206- 67.7 65.7 13.5 15.5 10.7 
One adult female from Guatemala............-....--+-222-- ++ 71 66.5] 145] 165] 12.5 
Four adult females from British Honduras...............------ 67.2 64.1 14 16.1 11.6 
Ten adult females (S. s. levis) from Costa Rica............----- 73.6 68.4 14 16.7 12.2 
Three adult females (9. s. levis) from Panamé.............-.--- 76 73.5 14.7 17.3 12.7 
¢Costa Rican examples are intermediate between S. s. sylvioides and S. s. levis, agree- 
ing best with the former in measurements and with the latter in coloration. In fact, 
they may be as well referred to one form as to the other. 
