Hub. in Fretu Magellanico. 



DifFert h specie Trog. JEquinoctialis, Swains., magnitudine majore 

 corporis ; rostro minore. 



Troglodytes leucoqastra. Trog. corporis parte superiors re- 

 migibiisque cauda: brunneo-rufescentibus olivaceo tinctis ; caudce 

 et reniigibus secundariis lineis hrunneis transversaliter striatis ; 

 strigd superciliosd, gutture, pectore, abdomineque albis ; lateribus, 

 femoribus, crissoque pallidi-brunneis ; mandibuld superiors fused, 

 inferiore sub-albidd ; pedibus brunneis. 



Long, tot., 2| unc; rostri, |; alae, 2; cauda, 1^; tarsi, ^. 



Hah. in Mexico, in loco Taumalipus dicto. 



Thryothorus guttatus. Thry. capite supra brunneo-rubro ; strigd 

 superciliosd ulbd lineis quam minimis nigris interruptd ; dorso 

 hrunneo, plumis longitudinaliter albo striatis ; alis albo et brunneo 

 alternative striatis ; remigibus caudce duahus intermediis brunneo- 

 nigra guttafis, duabus propinquis nigrescentibus ; marginibus ex- 

 ternis guttis pallide brunneis adspersis rectricibus duabus, externis 

 albo atque brunneo striatis ; harum externd ad apicem albo notatd; 

 guld et pectore griseo-albis maculis nigris guttatis ; abdomine la- 

 teribusque albis guttis nigris parvis adspersis ; pedibus brunneis ; 

 mandibuld superiors gricescente, inferiore fusco. 



Long, tot., 6f unc; rostri, 1 ; alee, 3; cauda, 3; tarsi, 1. 



Hab. Mexico. 



Mr. Gould also proposed a new genus in the group of Wrens, 

 under the name of Scytalopus, and which he characterized as fol- 

 lows : 



Genus Scytalopus. 



Rostrum capite brevius, compressum, obtusum leviter recurvum. 



Nares basales, membrana tectse. 



Alts concavse, breves, rotundatse, remige prima abbreviata, tertijl, 

 quarta, quinta et sextS. sequalibus. 



Cauda brevis, rotundata, (pennis externis brevissimis,) lax&. 



Tarsi elongati, atque robusti, antrorsum scutellis tecti ; posterius 

 fasciis angustis cincti, squamis serpentum abdominalibus, baud dis- 

 sirailibus ; halluce elongato et robusto ; ungue elongate ; digitum 

 anteriorum, medio elongato et gracili. 



Scytalopus Fuscus. Scy. corpore toto fuliginoso-nigro ; capitis 

 plumis nonnunquam argentato-griseis ; rostro nigro ; pedibus hrun- 

 neis. 



Long, tot., 2f unc; rostri, ^; ala, 1^; caudce, \\; tarsi, J. 



Hab. in Fretu Magellanico, Chili, &c. 



Hoc genus ad illud in quo Troglodytes verse amplectuntur maxi- 

 raam afhnitatem demonstrat. 



