BIRDS OF NORTH AND MIDDLE AMERICA. 



509 



Adu/t male.— Length (skins), 142-1()7 (155.2); ^\'mg, 04-70 (67.4); 

 tail, 53.5-63 (58); exposed culmen, 17.5-21.5 (1J».8); tarsus, 21-24 

 (22.7); middle toe, 14.5-17 (15.8).« 



Aduhfe7nale. —Length (skins), 137-159 (146); winjr, 6(j_66 (62.9); 

 tail, 50-60 (54.3); exposed culmen, 17-20 (18.3); tarsus, 20-23.5 (21.8); 

 middle toe, 14-16 (14.9).'' 



Southwestern Mexico, in States of Oaxaca (Telmantepec; Santa P]fi- 

 genia; Juchitan), Guerrero (Acapulco; Papayo; Kio IJalsas; JNIexcala; 

 El Limon; El Rincon; Dos Caminos, Apipiluluca; Acahuitzotla), 

 Michoacan (La Salada), and Colima (Rio de la Armeria). 



Campylorlu/HchnK humilh Sclater, Proc. Ac. Nat. Sci. Phila., viii, 1856, 263 

 (IMazutlan, Sinaloa; coll. Acad. Nat. Sci. Phila.). — Baird, Eeview Am. 

 Birds, 1864, 107, part (Colima, "Orizaba," Vera Cruz). — Sumichrast, 

 Mem. Best. Soc. N. H., i, 1869, 545 (Juchitan, Tehuantepec). — Lawrence, 

 Mem. Best. Soc. N. II., ii, 1874, 267 (Mazatlan; Colima).— Lawrence, Bull. 

 U. S. Nat. Mus., no. 4, 1876, 13 (Santa Efigenia and Tehuantepec City, 

 Oaxaca). — Salvin and Godman, Biol. Centr.-Am., Aves, i, 1880, 65 (San 

 Juan del Rio, etc.).— Sharpe, Cat. Birds Brit. Mus., vi, 1881, 192. 



'['CampylorJti/ncInis'] humilis Sclater and Salvin, Nom. Av. Neotr., 1873, 5. 



Heleodytes huniilis rnfus Nelson, Auk, xiv, Jan., 1897, 69 (Acahuitzotla, 

 Guerrero; coll. U. S. Nat. Mus.). 



« Twenty-four specimens. 



'' Seventeen specimens. 



Specimens from different localities compare in average measurements as follows: 



Locality. 



MALES. 



Seven adult males from Oaxaca (Tehuantepec and SunUi 

 Efigenia) 



Nine adult males from Guerrero (Acapulco, Papayo, etc) . . . 



Five adult males from type locality of //. humili>s rufus 

 Nelson 



Three adult males from Michoacan (Rio Siilada) 



FEMALES. 



Four adult females from Oaxaca (Tehuantepec and Santa 

 Efigenia) 



Nine adult females from Guerrero (Acapulco, etc) 



Three adult females from type locality of H. humilis rtifus 

 Nelson 



One adult female from Michoacan (Rio Salada) 



Wing. 



G7.S 

 67 



68.6 

 66.2 



63. 5 

 62.4 



63.7 

 62. 9 



Tail. 



5"J. 1 

 56.8 



57.8 

 59 



55 

 54.3 



Ex- 

 posed 

 culmen. 



19. 6 

 19.7 



20.3 

 19.5 



17.9 



18 



19.3 

 LS.3 



Tarsus. 



23. 4 



22. 6 

 23 



22. 6 

 21. 2 



Middle 

 toe. 



15.9 

 15.9 



16.2 

 15 



14.9 

 1.^. 1 



15 

 14.9 



I am not able to discern any difference of coloration, except that those from 

 Oaxaca seem to be very slightly paler than tlie others. The difference is so very 

 slight, however, that I would not .separate them on this character alone. 



The type of //. ]ni)ntli)i rufuH Nelson is in very fresh jiiumage, and is more uniform 

 in the coloration of the upper parts than any other among the lifty-one specimens 

 examined; but the seven other specimens from the same locality are quite indistin- 

 guishable from those from other parts of Guerrero, Michoacan, and Colima. 



