MELANERPES. . 493 
10. Melanerpes canescens. 
Centurus dubius, Ridgw. Pr. U. S. Nat. Mus. x. p. 579". 
Centurus canescens, Salv. Ibis, 1889, p. 370°. 
Melanerpes canescens, Hargitt, Cat. Birds Brit. Mus. xviii. p. 174°. 
C. dubio affinis, sed fasciis albis corporis superioris et alarum paulo latioribus, remigibus externis ad basin 
distincte albo fasciatis ; genis et corpore subtus plerumque albicantioribus, fascia frontali albida multo 
latiore, narium plumis vix coccineo tinctis. Long. tota circa 9°7, ale 5:1, caude 3:15, rostri a rictu 1°6, 
tarsi 0°8, dig. med. absque ungue 0°78, dig. ext. 0°78. 
@ mari similis, pileo summo cano. (Descr. maris et femine exempl. typ. ex Ins. Ruatan. Mus. nostr.) 
Hab. Wonpvras, Ruatan I. (Townsend 1, Gaumer *). 
Dr. Gaumer obtained many specimens of this Woodpecker when visiting the island 
of Ruatan in the Bay of Honduras. It is no doubt very closely allied to M. dubius, 
being an island-form of that bird distinguished by the very pale colour of the sides of 
the-head and under surface. ‘There is very little red on the feathers covering the 
nostrils, so that the transverse band across the forehead is wide; the primaries, too, 
show externally much more of the white spots near the base. 
On the mainland of Honduras, opposite the island of Ruatan, the small dark form of 
M. santacruzi called by Mr. Ridgway WM. s. pauper occurs, no doubt replacing M. dubius ; 
but where these two forms meet in British Honduras has not yet been traced. 
B'". Uropygium et tectrices supracaudales nigro regulariter fasciati. 
11. Melanerpes uropygialis. 
Centurus uropygialis, Baird, Pr. Ac. Phil. 1854, p. 120’; Cab. J. f. Orn. 1862, p. 330°; Baird, 
Brew., & Ridgw. N. Am. Birds, ii. p. 558°; Lawr. Mem. Bost. Soc. N. H. ii. p. 294°; 
Ridgw. Pr. U. S. Nat. Mus. iv. p. 112°; Belding, Pr. U. S. Nat. Mus. vi. p. 344°. 
Melanerpes uropygialis, Hargitt, Cat. Birds Brit. Mus. xviii. pp. 182, 569". 
Supra niger, dorso toto, uropygio et alis albo regulariter transfasciatis; capite toto, cervice et corpore subtus 
pallide brunneo-fuscescentibus, fronte et plumis narium albicantioribus, pileo medio coccineo, hypo- 
chondriis imis et tectricibus subcaudalibus nigro distincte transfasciatis, abdomine medio vix flavo tincto ; 
remigibus externis ad basin distincte albo fasciatis ; cauda nigra, rectricibus subexternis albo fasciatis, 
duabus mediis quoque fasciatis in pogonio interno, in pogonio externo stria elongata juxta rhachidem 
notatis ; rostro et pedibus plumbeis. Long. tota circa 8°5, ale 5°0, caudve 2°8, rostri a rictu 1-4, tarsi 0-9, 
dig. med. absque ungue 0°78, dig. ext. 0°75. 
9 mari similis, pileo medio haud coccineo. (Descr. maris et feminw ex Nuri, Sonora. Mus. nostr.) 
Hab. N. America, New Mexico}, Southern and Lower California, 8. Arizona® 5>,—Mexico, 
Moctezuma, Hermosillo in Sonora (Lerrari-Perez), Guaymas (Belding °), Ysleta, Rie 
Mayo, Nuri, Cedros(W. Lloyd), Mazatlan (Grayson +, Forrer), Presidio de Mazatlan 
(Forrer), San Blas (W. B. Richardson), Hacienda de San Ramon, Rancho de San 
Pablo in the Sierra de Alica, Hacienda de Ambas Aguas, Ixtlan, all in the Terr. 
de Tepic (Dr. A. C. Buller, in Mus. Rothschild), 'Tepic, Guadalajara (Grayson *), 
Santana near Guadalajara. (W. Lloyd), Barranca de Portillo near Guadalajara (Dr. 
A. C. Buller, in Mus. Rothschild), Sierva de Bolaiios, Calvillo (W. B. Richardson). 
