64 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



feathers of dull rusty or cinnamon, these very broad and conspicuous 

 on tertials and greater wing-coverts; pale rump-patch also more or 

 less tinged with pale cinnamon or cinnamon-buff; cinnamon color of 

 chin and throat (usually deeper than in adults) extending over chest 

 and sides of breast and strongly tinging sides and flanks. 



Adult male.--LQngt}i (skins), 110-127 (118.5); wing, 103-114 (108); 

 tail, 47-64 (50); exposed culmen, 6-7.5 (6.9); width of bill at frontal 

 antiffi, 5-6 (5.1); tarsus, 10-11 (10.1); middle toe, 8.5-10.5 (9.6)." 



Adult female.— Length, (skins), 111-126 (117.8); wing, 95-104 

 (100.5); tail, 46-51.5 (48.8); exposed culmen, 6-7.5 (6.8); width of bill 

 at frontal antise, 4.5-6 (5.4); tarsus, 10-11 (10.3); middle toe, 9-11 

 (9.8).* 



Eastern Nicaragua (Kio Escondido) and Costa Eica (Angostura; Eio 

 Frio) southward through Colombia to western Ecuador (Babahoyo; 

 Chimbo; Esmeraldas; Vinces; Yaguachi), Venezuela (La Pricion), and 

 Trinidad. 



Cotyle flamgaatra (not Hirwndo flavigastra Vieillot) Cassin, Proc. Ac. Nat. Sci. 



Philad., 1860, 133 (Panama E. R.).— Sclater, Proc. Zool. Soc. Lond., 1860, 



274 (Babahoyo, w. Ecuador).— Laweence, Ann. Lye. N. Y., vii, 1862, 317 



(Panama R. E. ). 

 Cotyle ruficollis (not Hirundo rujkoVis Vieillot) Sclatek, Proc. Zool. Soc. Lond., 



1860, 292 (Esmeraldas, w. Ecuador); Cat. Am. Birds, 1862, 41. 

 Cotyle uropygialis Laweence, Ibis, April, 1863, 181 (Panama R. R.; coll. G. N. 



Lawrence); Ann. Lye. N. Y., viii, 1863, 3, 481. — Sclatee and Salvin, Proc. 



Zool. Soc. Lond., 1864, 348 (PanamaR. R.).— Leotaud, Ois. Trinidad, 1866, 94. 

 ICotile] uropygialis Gray, Hand-list, i, 1869, 73, no. 870. - 

 Stelgidopteryx uropygialis Baihd, Review Am. Birds, May, 1865, 317 (Isthmus 



Panama). — Salvin, Proc. Zool. Soc. Lond., 1870, 184 (Chitra, Veragua) ; Ibis, 



1870, 109 (Costa Rica).— Wyatt, Ibis, 1870, 184 (Colombia).— Sclatee and 



ffl Eighteen specimens. 



* Ten specimens. 



Specimens from different localities average, respectively, as follows: 



Locality. 



Wing. 



Tail. 



Ex- 

 posed 

 culmen. 



Width of 

 bill at 

 frontal 

 antise. 



Middle 

 toe. 



MALES. 



Three adult males from Costa Rica 



Seven adult males from Panama 



Three adult males from Santa Marta. Colombia. . 

 Four adult males from Trinidad , 



FEMALES. 



Three adult females from Costa Rica 



Three adult females from Santa Marta, Colombia, 

 Three adult females from Trinidad 



107 

 108.1 

 105.8 

 109.6 



98.7 

 102 

 102.2 



48 

 51.3 

 50.2 

 60.9 



47.8 

 49.2 

 60. 8 



7 



6.7 

 6.7 

 7.5 



6.7 

 6.8 



7 



6 



5.1 

 5 

 6.3 



5.3 

 4.8 

 5.8 



10 

 10 

 10.3 

 10.1 



10.3 

 10.2 

 10.2 



10 

 9.5 

 9.7 

 9.6 



10 

 9.8 



I am unable to appreciate any constant difference between specimens from the 

 above-mentioned localities. Examples from Guiana have the rump much darker 

 and should be separated as belonging to a different form. 



