214 BULLETIN 50, UNITED STATP:S NATIONAL MUSEUM. 



dried skins); length (skin), 185; wing, 72; tail, 58; exposed culmen, 13; 

 depth of bill at nostrils, 0; tarsus, 21; middle toe, 14/' 

 Island of Jamaica, Greater Antilles. 



Laletes oshurni Sclater, Proc. Zool. Soc. Lond., 1861, 72, pi. 14, fig. 2 (Jamaica; 



type in coll. U. S. Nat. Mus. ); Cat. Am. Birds, 1862, 359. — Albrecht, Journ. 



fiir Orn., 1862, 195.— Gadow, Cat. BirdsBrit. Muh., viii, 1883, 313.— Cory, Auk, 



iii, 1886, 190 (synonymy and diagnosis); Birds \V. I., 1889, 77 (do.); Cat. 



W. I. Birds, 18*92, 17, 116, 130. 

 [iMletex] osbiir))! Sclater and Salvin, Nom. Av. Neotr., 1873, 12. — Cory, List 



Birds AV. I., 1885, 10. 

 Llaletesl osfcwrm" Newton (A. and E. ), Handb. Jamaica, 1881, 106. 

 Laletes osburnii Baikd, Eeview Am. Birds, 1866, 383 (Trelawney, Jamaica). 

 [Cydarhis] osburnii Gray, Hand-list, i, 1869, 384, no. 5818. 



Genus PACHYSYLVIA Bonaparte.^ 



mjlophilus {not Hylophila Hiibner, 1816) Temminck, PL Col., iii, livr. 29, 1823, 

 text to pi. 173, fig. 1. (Type, 11. thoracicus Temminck. ) 



Pachysylvia Bonaparte, Consp. Av., i, 1850, 309. (Type, Syhicola decurtata 

 Bonaparte. ) 



Small Vireonidae (wing not more than 65 mm.), wnth rather slender- 

 conoid, slightly uncinate bill, inner toe (without claw) as long as or 

 longer than hallux (without claw), its claw reaching decidedly beyond 

 base of middle claw; coloration plain and dull. 



Bill shorter than head (though sometimes nearly as long), slender- 

 conoid, more tapering terminally than in other Vireonidte; exposed 

 culmen about two-thirds as long as tarsus, nearly straight to near tip, 

 where gradually and slightly decuryed, the tip of maxilla distinctly 

 produced l)ut not strongly uncinate; gonys shorter than distance from 

 nostril to tip of maxilla (sometimes nearly as long), ver}^' slightly 

 cony ex; depth of bill at frontal antite about equal to its width at same 

 point or slightly less. Nostril exposed, longitudinally oyate, in lower 

 anterior portion of nasal fossae, sometimes narrowly margined ante- 

 riorly by membrane, posteriorly in contact, or nearly so, with bristlj^ 

 feathers of frontal antise. Rictal bristles indistinct or with onl}' one 

 or two well deyeloped, but either the frontal feathers or those of the 

 malar or mental antia? (sometimes all) with distinct terminal bristles. 

 Wing moderate, nuich rounded; tenth primary about half as long as 

 ninth, broad, with rounded tip; ninth primary not longer than second- 

 aries, sometimes decidedly shorter; seyenth, sixth, and fifth, or eighth 

 to fifth longest, the eighth usuall}^ longer than fourth, sometimes 

 longer than fifth. Tail decidedly, usually much, shorter than wing, 

 the difference yarying from more than length of tarsus {P. decurtata) 

 to less than half as much (P. im^idifiava). slightly rounded, the rec- 

 trices rather pointed at tips. Tarsus less than one-third to slightly 



"One specimen. 



^The fact that Hylophilus is preoccupied and can not, therefore, be used for this 

 genus has been brought to my attention by Mr. Harry C. Oberholser. 



