186 DENDROCOLAPTIDZ. 
Supra brunneus; uropygio, alis extus et cauda rubiginosis, tectricibus alarum dorso concoloribus ; capite 
summo maculis discalibus cervinis extrorsum nigro marginatis notato, dorsi plumis quoque leviter striis 
rhachidalibus angustis ornatis: subtus gula cervina, corpore reliquo maculis elongatis discalibus utrinque 
nigro marginatis notato ; subalaribus pallide cinnamomeis, remigibus (preter apices fuscos) quoque cinna- 
momeis: rostro albicante corneo, pedibus fuscis. Long. tota 8°7, ale 4:1, caude 3-7, rostri a rictu 1-3, 
tarsi 0°8. (Descr. exempl. ex Jalapa, Mexico. Mus. nostr.) 
© mari similis. 
Hab. Mexico 1, Valley of Mexico (White’), Alpine region of Vera Cruz1!, Omealca ! 
(Sumichrast), Vera Cruz (Sanchez), Cofre de Perote (M. Trujillo), Jalapa®™ 
(de Oca, Ferrari-Perez, F. D. G., Trujillo), Cordova (Sallé +), Hueytamalco (Ferrari- 
Perez 8), El Patio, Villa Alta (Zrujillo), Totontepec (Boucard®, Trujillo), 
Omilteme in the Sierra Madre del Sur, State of Guerrero (Mrs. H. H. Smith) ; 
GuateMALa, Santa Maria and Chuipaché in Quezaltenango, Toliman (W. B. Rich- 
ardson), Volcan de Fuego, Volcan de Agua, and Santa Barbara in Vera Paz 
(0. S. & F. D. G.); Costa Rica, Dota, Barranca, and San José (Carmiol 1°), San 
Francisco (Rogers) ; Panama, Volcan de Chiriqui (Arcé '*). 
Picolaptes affinis, originally described by Lafresnaye from a Mexican specimen in the 
collection of Mons. C. Brelay }, is now known to have a wide range over the highlands 
of Mexico and Central America from the State of Vera Cruz to the mountains of Costa 
Rica and Chiriqui. It also occurs on the uplands of the intervening country wherever 
the mountains attain a sufficient elevation, 4000 feet being about the lower limit of its 
vertical range. We note no appreciable variation in specimens from many points of its 
wide range, notwithstanding that this range must be interrupted in several places. In 
the lowlands of the same countries where P. affinis occurs, another species (P. com- 
pressus) takes its place. From that species it may readily be distinguished by the spots 
on the head being much shorter and bounded outwardly by black, and the streaks on 
the neck and upper back are not nearly so well defined ; the marks, too, of the under 
surface are much more definite. The bill, too, is darker. 
P. affinis is not uncommon in the oak-forests of the volcanoes of Guatemala at an 
altitude of from 6000 to 8000 feet above the sea. 
3. Picolaptes compressus. 
Picolaptes lineaticeps, Scl. P. Z.S. 1860, p. 252 (nec Lafr.) +; Cat. Am. B. p. 166°; Saly. Ibis, 
1861, p. 353°; Lawr. Ann. Lyc. N. Y. ix. p. 107‘; Salvad. Atti Acc. Se. Tor. iv. 
p. 179. 
Picolaptes affinis, Scl. & Salv. Ibis, 1859, p. 117°; Sumichrast, Mem. Bost. Soc. N. H. i. p. 555 
(? partim) °, 
Thripobrotus compressus, Cab. J. f. Orn. 1861, p. 2437. 
Picolaptes compressus, Lawr. Ann. Lyc. N. Y. ix. p. 107°; Salv. Ibis, 1869, p. 314°; P. Z.S. 1870, 
p. 193°"; Frantz. J. f. Orn. 1869, p. 305"; Scl. & Salv. P.Z.S. 1870, p. 837°; Boucard, 
