No. 4. — Notes on some American Birds, chiefly Neotropical. 

 By Outram Bangs and Thomas E. Penard. 



In the present paper we deal chiefly with some neotropical birds, 

 erecting two new genera, describing one new species and five new 

 subspecies, and reviewing the forms of a number of species, involving 

 some changes and corrections in the nomenclature and synonymy of 

 several forms. 



All measurements are in millimeters; the tail is measured from the 

 base of the free tail feathers to the extreme tip. 



We are indebted, for the loan of specimens, to Dr. Frank M. Chap- 

 man of the American IMuseum of Natural History, Mr. Charles B. 

 Corv of the Field Museum, Dr. Charles \V. Richmond of the National 

 Museum, and Mr. W. E. Clyde Todd of the Carnegie Museum. 



A NEW SUBSPECIES OF CROTOPHAGA SULCIROSTRIS SWAINSON. 



Crotophaga sulcirostris pallidula, subsp. nov. 



Type.— M. C. Z. 217,148. Adult d". Lower California: San 

 Jose del Cabo, 12 October, 1887. M. Abbott Frazar. 



SuBSPECiFic CH.uiACTERS. — Similar to Crotophaga sulcirostris sulcirostris 

 Swainson of Mexico, and of about the same size, but much paler and with less 

 purplish iridescence ; the U-shaped iridescent markings of the back and breast 

 paler and duller greenish, not so briUiant; the duU purplish bronze of the head 

 and neck of true sulcirostris replaced bj' paler, more grayish bronze; the 

 lustreless parts of the body-feathers grayish brownish black instead of dull 

 black. 



Measurements. — Type. Adult d^ — wing, 143.0; tail, 186.0; 

 tarsus, 35.5; culmen, 27.5. 



Male (eight specimens) — wing, 137.0-143.0 (139.4); tail, 177.0- 

 188.0 (184.1); tarsus, 32.0-36.0 (34.6); culmen, 26.5-28.5 (27.3). 



Female (ten specimens) — wing, 133.5-142.0 (137.1); tail, 170.5- 

 185.5 (178.8); tarsus, 31.0-35.0 (32.9); culmen, 25.0-27.0 (26.1). 



Specimens examined. — C. .v. sulcirostris: — Texas: Lomita Ranch, 

 1 cf ; Browns\'ille, Icf, 19. iSIexico: Monterey, 2 9 9,1 unsexed; 

 Tamaulipas, 4 d^ cf ; Escuinapa, 1 cT , 1 9 ; Plains of Colima, 1 9 ; 



