BIOLOGIA CENTRALI-AMERICANA. 
ZOOLOGIA. 
Class AVES *. 
Subclass AVES CARINAT &. 
Order PASSERES. 
Suborder OSCINES. 
Section I. OSCINES DENTIROSTRES. 
Fam. TURDIDA. 
Subfam. TURDINZ. 
CATHARUS. 
Catharus, Bonaparte, Consp. Av. i. p. 278 (1850). (Type C. aurantiirostris.) 
Malacocichla, Gould, P. Z. 8. 1854, p. 285. (Type C. dryas.) 
This genus differs from the true Thrushes (7Zwrdus) chiefly in its shorter, more 
rounded wings and in its long slender tarsi—characters suited to the terrestrial habits 
of all the species, and to their place of abode amongst dense brushwood or primeval 
forest. Twelve species are now known of the genus, of which no less than nine are 
found within our limits, the rest being Andean species occurring in various places as 
far south as the province of Yungas in Bolivia, whence we have lately received the 
species described as C. mentalis+, and where also C. dryas occurs. Though none of the 
species appear to occur at or near the sea-level, some (such as C. fuscater, C. mexicanus, 
* The classification here adopted is nearly that of the ‘ Nomenclator Avium Neotropicalium’ of Sclater and 
Salvin. 
+ Scl. & Salv. P. Z. 8. 1876, p. 352. 
BIOL. CENTR.-AMER., Zool., Aves, Vol. 1, Sept. 1879. 
