396 Mr. Vigors's Sketches in Ornithologj/, 



***** 

 Petrocincla.* 



IV. Fam. Sylviad^. [Gen. Motacilla, Linn.] 



* ? 



Hylophilus. Temm, — lora. Horsf. — Accentor. Bechst. — 



Prunella. Gessn.? 

 ** ? 



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



— ^githina. VieilL? 

 *** Subfam. Sylviana. 

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



Malurus. Vieill. — Troglodytes. Cuv.^-Regulus. Cuv. — 



Tyrannulus. Vieill. 

 **** 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 ; naribus basalibus, 

 ovalibus, longitudinalibus. 



^/<E mediocres, rotundatae: remige Im^ brevissim^, 5ta longissim^, 4ta 

 Stia et,2dS, paulatim brevioribus; 4tffi Stae et 6tsB 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)[pAina with that of iKfj/zo</ierma. Swains. It is characterized as 

 follows. 



Petrocincla. 



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

 tundis, setis partim tectis. 



Moe mediocres: remige Irak brevissima, fere spuria; Sti^, longissim^, 2d^ 

 pauU breviore. 



Pedes mediocres, subfortes ; acrotarsiis paratarsiisqxxe integris. 



Cauda brevis, aequalis. 



Typus genericus. Turdus saxatilis. Linn. 



