SCLERURUS. 167 
considers S. canigularis to be inseparable from S. albogularis?; but Mr. Ridgway 
adheres to his first statement as to their distinctness 2 and summarizes their differences 
as follows :— 
“Underparts dull greyish olive, becoming tawny olive on chest; back and 
scapulars bistre-brown tinged with olive; lower half of throat dull light 
grey ; upper half, including chin, dull white . oe . . SS. albogularis. 
“ Underparts dark slaty, tinged on some feathers with bright 1 mummy- brown, 
the chest deep burnt-umber brown; lower half of throat deep greyish; 
upper half, including chin, paler, but scarcely approaching white; back and 
scapulars deep vandyke-brown . . . . . 1... we ee es) 6S. canigularis.”’ 
The type of S. canigularis is, we believe, unique, and examples of S. albogularis 
are scarce, so that additional specimens of both are required to decide the status of the 
two birds. In the meantime we follow Mr. Ridgway in keeping them separate. 
2. Sclerurus mexicanus. 
Sclerurus mexicanus, Scl. P. Z.S. 1856, p. 290'; 1859, p. 83657; 1864, p. 175°; Cat. Birds Brit. 
Mus. xv. p. 115*; Scl. & Salv. Ibis, 1860, p. 35°; Salv. Ibis, 1861, p. 143°; P. Z. S. 
1867, p. 1427; 1870, p. 191°; Lawr. Ann. Lyc. N. Y. vii. p. 465°; Sumichrast, Mem. 
Bost. Soc. N. H. i. p. 555 , La Nat. v. p. 247"; Sanchez, An. Mus. Nac. Mex. 1 
p- 97"; Ridgw. Pr. U. S. Nat. Mus. xii. p. 25. 
Sclerurus guatemalensis, Lawr. Ann. Lyc. N. Y. viii. p. 4™. 
Supra brunneus, pileo vix obscuriore, uropygio castaneo, cauda nigricanti-fusca: subtus gula et pectore 
castaneis illa pallidiore; abdomine toto et tectricibus subcaudalibus dorso fere concoloribus, tectricibus sub- 
alaribus rufis: rostro et pedibus saturate corylinis, mandibula infra pallida. Long. tota 6-0, alw 3:1, 
caud rectr. med. 2:2, rectr. lat. 1:6, rostri a rictu 1:15, tarsi 0°85. (Descr. exempl. ex Raxché, 
Guatemala. Mus. nostr.) 
Hab. Mexico (White*), Vera Cruz (Sanchez 13), Jalapa (de Oca?, F. Ferrari-Perez), 
Cordova (Sallé 1), Hot region of Vera Cruz}, Orizaba !!, and Potrero ™ (Sumi- 
chrast), Mirador (Sartorius 1°); GuateMaLA, Coban 5, Raxché °, Savana Grande, 
and Volcan de Agua above San Diego (0. 8S. & F. D. G.); Panama, Calovevora §, 
Santiago de Veraguas’, Cordillera de Tolé7 (Arcé), Lion Hill (If‘Leannan }%).—- 
CoLomBiaA and Amazons Valley ; Bahia ? 18, 
Sclerurus mexieanus was discovered by Sallé near Cordova, in the Mexican State of 
Vera Cruz, and was described by Mr. Sclater in 18561. It has subsequently been met 
with in other parts of the same State, where, Sumichrast tells us1°, it chiefly inhabits 
the hot region, but ascends the mountains to a height of upwards of 4000 feet above 
the sea. It is absent from Western Mexico, but in Guatemala it occurs in sparing 
numbers in the heavily forested districts on both sides of the main mountain-chain. 
Its home is in virgin forest, where it lives amongst the undergrowth. 
Though no specimens are recorded as having been obtained between Guatemala and 
