DENDROCOPUS. 435 



San Marcos in May 1889. Some of these examples are rather smaller than those from 

 more northern localities, and upon such a small specimen (a female) Mr. Ridgway founded 

 his B. arizonm fraterculus. The difference, however, is by no means constant, and 

 some southern birds quite equal their northern relatives in size ; so that failing more 

 positive characters no separation should be made. 



Though known for some time as a bird of Arizona, it passed under the name of 

 D. stricMandi, until Mr. Hargitt, having occasion to refer to the question, detected 

 the differences, and described the bird under the name it now bears. 



/3. Alee externe et plumes scapulares distincte albo notatce ; pileus fere totus 



maris coccineo ornatus. 



5. Dendrocopus scalaris. 



Picus scalaris, Wagl. Isis, 1829, p. 511' ; Scl. P. Z. S. 1856, p. 307'; 1859, p. 367'; Duges, La 

 Nat. i. p. 139*; Lawr. Ann. Lye. N. Y. ix. p. 205 '; Mem. Bost. Soc. N. H. ii. p. 294"; 

 Bull. U. S. Nat. Mus. no. 4, p. 34'; Grayson, Pr. Bost. Soc. N. H. xiv. p. 273'; Baird, 

 Brew., & Ridgw. N. Am. Birds, ii. p. 515'; Sumichrast, La Nat. v. p. 240"; Balding, 

 Pr. U. S. Nat. Mus. vi. p. 344" ; Boucard, P. Z. S. 1883, p. 452 " ; Salv. Ibis, 1885, p. 191" 



Bryohates scalaris, Ridgw. Pr. U. S. Nat. Mus. viii. p. 575"; Ferrari-Perez, Pr. U. S. Nat. Mus. 

 ix. p. 159"; Herrera, La Nat. (2) i. pp. 179", 322"; Salv. Ibis, 1889, p. 368". 



Dendrocopus scalaris, Hargitt, Cat. Birds Brit. Mus. x^iii. p. 246 ". 



Dictyopipo scalaris. Cab. & Heine, Mus. Hein. iv. Heft 2, p. 74 '°. 



Picus parvus, Cabot, Bost. Joum. N. H. v. p. 92 ^\ 



Dryobates scalaris parvus, Ridgw. Man. N. Am. Birds, p. 284 " ; Stone, Pr. Ac. Phil. 1890, p. 206 ". 



Picus bairdi, Malh. Mon. Pic. i. p. 118, t. 27. figg. 7, 8'"; Scl. Cat. Am. Birds, p. 333". 



Picus scalaris, var., Malh. Mon. Pic. t. 27. fig. 6 '°. 



Picus orizabce, Cassin, Pr. Ac. Phil. 1863, p. 196 ". 



Picv^ lucasianus, Fiusch, Abh. nat. Ver. z. Bremen, 1870, p. 354". 



Dryobates scalaris sinaloensis, Ridgw. Man. N. Am. Birds, p. 285 ". 



Picus scalaris, var. graysoni, Lawr. Mem. Bost. Soc. N. H. ii. p. 294 '°. 



Dryobates scalaris graysoni j Ridgw. Man. N. Am. Birds, p. 285 ". 



Dendrocopus graysoni, Hargitt, Cat. Birds Brit. Mus. xviii. p. 250 ". 



Supra niger, distincte et regulariter albo transfasciatus, tectricibus supraeaudalibus nigricantibus, pilei plumis 

 ad basin nigris medialiter albis et coccineo terminatis, fronte tantum albo guttata, nucha pure coecinea ; 

 capitis lateribus nigricantibus, stria superciliari (cervicis lateribus albidis conjuncta) et stria infra oculos 

 albidis: subtus albidus, corporis lateribus sparsim nigricante guttatis; alls nigricantibus albo fasciatis, 

 tectricibus quoque albo guttatis ; cauda nigra, reotricibus externis distincte albo transfasciatis ; rostro et 

 pedibus nigricanti-plumbeis. Long, tota circa 6-0, alse 3-9, caudje 3-0, rostri a rictu 0-85, tarsi 0-6, dig. 

 med. absque ungue 0-45, dig. ext. 0-5. (Descr. maris ex Chietla, Puebla, Mexico. Mus. nostr.) 



$ mari simUis, capite summo omnino nigricante. 



Hah. NoETH America, States of the southern frontier, from Arizona to Texas ». — 

 Mexico {Wagler'^), Hermosillo, Moctezuma (i^ez-T-an-Perez), Guaymas {Belding ^^), 

 Cedros, Guadalupe in Sonora, Indines in Chihuahua {W. Lloyd), Presidio de 



55* 



