250 PICIDJE. 



Sutsp. o. Dendrocopus lucasanus. 



Picus lucasanus, X(mtus, Proc. Acad. Philad. 1859, p. 302 ; Malh. 



Picid. i. p. 106 (1861) ; Sclat. Cat. Amer. B. p. 333, no. 1986 (1862) ; 



Graij, List Picid. Brit. Mus. p. 50 (1868) ; Ulliot, New S,- Unfg. B. 



N. Amer. i. Introd. p. 7 (1869) ; Gray, Hand-l. B. ii. p. 186, 



no. 8612 (1870). 

 Dictyopipo lucasana, Cah. S)- Heine, Mus. Ilein. iv. p. 75 (1863). 

 Picus scalaris, var. lucasanus, Cooper, B. Calif, ed. Baird, p. 381, 



head figured (1870) ; B., B., k' P. Hist. N. Amer. B. ii. p. 519 ( 1874). 

 Picus scalaris lucasanus, Pidf/w. Proc. U. S. Nat. Mus. 1880, pp. 189, 



219, 229, no. 363 a ; Cuu'es, Check-list N. Amer. B. 1882, p. 77, 



no. 436 ; Beldim/, Proc. U. S. Nat. Mus. 1882, p. 543 ; id. oj}. cit. 



1883, pp. 344, 345, 349 ; Coues, Key N Amer. B. 2ad ed. 1884, 



p. 482. 

 Dryobates scalaris lucasanus, A. O. U. Check-list, p. 212, no. 396 a 



(1886) ; Ridgw. Man. N. Amer. B. p. 285 (1887). 



Adult male. Eesembles D. scalaris, but differs in having the enter 

 webs of the lateral tail-feathers barred only near the tip, the basal 

 two-thirds or three-fourths being uniform ; the whole of the hind neck 

 is black and the feathers of the extreme upper bade have more black. 

 It is allied to B. i/raijsoni by its whiter lateral tail-feathers and 

 conspicuous black patch on the hind neck, but may be distinguished 

 by its spotted primary-coverts and also by its longer bill and larger 

 dimensions. Total length 6'S inches, culmen 1, wing 4'05, tail 2"55, 

 tarsus 0*76 ; toes (without claws) — outer anterior 0"55, outer pos- 

 terior 0'57, inner anterior 0"4.^, inner posterior 0'28. 



Adult female. Has the top of the head and the occiput black like 

 the hind neck. In other points it is similar to the male. Total 

 length Q-b inches, culmen 0-77, wing 3'9, tail 2*45, tarsus 0*73. 



Hah. Southern portion of Lower California. 



a. (S ad. sk. La Paz, Lower Cahfornia, Salvin-Godman Coll, 



December {A. Forrer). 



b, c. (^ 2 fid. sk. Cape San Lucas, Lower Call- Salvin-Goduian Coll. 



fornia, Sept. (J. Xantus). 

 d. (S imm. ; e. Cape San Lucas {J. Xantus). Sclater Coll. 



$ ad. sk. 

 f. (S imm. sk. [Southern Mexico.] Salvin-Godman Coll. 



Subsp. /3. Dendrocopus graysoni, 



Picus scalaris {non Wayler), Grnysun, Proc. Post. Soc. Nat. Hist. 



1871, p. 273. 

 Picus scalaris, var. graysoni, Laivr. Mem. Bost. Soc. Nat. Hist. ii. 



p. 294 (1874). 

 Dryobates scalaris graysoni, Ridyw. Man. N. Amei\ B. p. 285 (1887). 



Adult male. Differs from D. scalaris in having the outer webs of 

 the lateral tail-feathers barred only on the apical half : the primary- 

 coverts unspotted ; the whole of the hind neck black, and the feathers 

 of the extreme upper back with more black, the white being some- 

 times absent or reduced to a spot, the lilack forming a conspicuous 

 patch or generally a distinct band ; the under surface of the body 



