PICID^E. 
399 
1949. Hypoxanthus rivolii. 
Picus rivolii , Boiss. Rev. Zool. 1840, p. 36: Sundev. Consp. 
Av. Picin. p. 71. 
Geopicus rivolii, Malh. Mon. Pic. ii. p. 267, iv. pi. 112. 
Colaptes rivolii, Scl. Cat. Am. B. p. 344. 
a, — b Bogota (Bt at Stevens s) 1845. 
Centukus. 
Centurus, Swainson, Classif. B. ii. p. 310 (1837). 
1950. Centurus carolinus. 
Picus carolinus, Linn. Syst. Nat. i. p. 174: Snndev. Consp. 
Av. Picin. p. 53. 
Zebrapicus carolinus, Malh. Mon. Pic. ii. p. 234, iv. pi. 103. 
Centurus carolinus, Baird, Brew. & Ridgw. N. Am. B. ii. p. 554. 
a (Askew) 1834. 
A North American species. 
1951. Centurus radiolatus. 
Picus radiolatus, Wagl. Syst. Av. fol. 2, p. 12: Sundev. 
Consp. Av. Picin. p. 52. 
Centurus radiolatus, Gosse, B. Jam. p. 271. 
a £ Jamaica (P. H. Gosse ) 1848. 
1952. Centurus albifrons. 
Picus albifrons, Sw. Phil. Mag. New Ser. i. p. 439. 
Centurus santacruzi, Bp. P. Z. S. 1837, p. 116: Scl. Cat. 
Am. B. p. 343. 
Zebrapicus santacruzi, Malh. Mon. Pic. ii. p. 241, iv. pi. 105. 
a Guatemala (J. Constancia) 1845. — b Guatemala (J. Con - 
stancia) 1848. 
1953. Centurus elegans. 
Picus elegans , Sw. Phil. Mag. New Ser. i. p. 439: Sundev. 
Consp. Av. Picin. p. 55. 
Centurus elegans, Scl. Cat. Am. B. p. 342. 
Zebrapicus elegans, Malh. Mon. Pic. ii., p. 225, iv. pi. 102. 
a, — b (N. C. Strickland) 1838. 
A Mexican species. 
