396 Mr. Vigors's Sketches in Ornithology/, 



Petrocincla.* 



IV. Fam. SylviAd^. [Gen. Motacilla. Linn.] 



* ? 



Hylophilus. Temm. — lora. Ilorsf. — Accentor. Bechst. — 

 Prunella. Gessn.? 



** p 



Brachypteryx. Horsf. — Curruca. Bechst. — Ficedula. Bechst. 



— ^githina. VieilL? 

 *** Subfam. Sylviana. 

 Sylvia. Auct. — Melizophilus. Leach — Synallaxis. Vieill. — 



Malurus. Vieill. — Troglodytes. Cuv. — Regulus. Cuv. — 



Tyrannulus. Fieill. 

 **** Subfam. Motacillina. 



into the present subdivision of the family, for the purpose of pointing out the 

 mode by which the Thrushes gradually pass into the Warblers. 



COSSYPHA. 



Rostrum mediocre, subgracile, culmine leviter arcuato ; nariius basalibus, 

 ovalibus, longitudinalibus. 



^liE mediocres, rotundatse: remige Ima brevissima, 6ta longissima, 4ta 

 3tia et ,2d§, paulatim brevioribus ; 4t8e 5taB et 6taB pogoniis externis leviter 

 prope medium emarginatis. 



Pedes subgraciles : tarsis scutellatis, paratarsiis integris. 



Cauda mediocris, rotundata. 



Typus genericus. Turdus vociferans. Swains. 



* This genus exhibits a form which seems to connect the preceding sub- 

 family of CoMj/pAzna with that of M^/foiAenna. Swains. It is characterized as 

 follows. 



PETROCmCLA. 



Rostrum subforte, rectum, culmine apice arcuato ; naribus basalibus, ro- 

 tundis, setis partim tectis. 



ytlas mediocres: remige ImS brevissima, fere spuria; Stia longissima, 2da 

 paule breviore. 



Pedes mediocres, subfortes ; acrotarsiis paratarsiisque integris. 



Cauda brevis, jequalis. 



Typus genericus. Turdus saxatilis. Linn. 



