89 



Hah. in Fretu Magellanico. 



DifFert ^ specie Trog. jEquinoctiaUs, Swain3., magnitudine majore 

 corporis ; rostro minore. 



Troglodytbs leucogastra. Troff. corporis parte superiore re- 

 migibusgue cauda brunneo-rufescentibus oUvaceo tinctis ; cauda 

 et remigibus secundariis lineis brunneis transversaliter striatis ; 

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

 femoribus, crissogue pallidi-brunneis ; mandibuld superiore f uscd, 

 inferiore sub-albidd ; pedibus brunneis. 



Long. tot., 2f unc; rostri, f; ala, 2; cauda, lį; tarsi, ^. 



Hab. in Mexico, in loco Taumalipus dicto. 



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

 superciliosd albd lineis cuUrn minimis nigris interruptd ; dorso 

 brunneo, plumis longitudinaliter albo striatis ; alis albo et brunneo 

 alternative striatis ; remigibus caudee duabus intermediis brunneo- 

 nigro guttatis, duabus propinquis nigrescentihus ; marginibus ex- 

 ternis gultis pallide brunneis adspersis rectricibus duabus, exlernis 

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

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

 teribusgue albis gultis nigris parvis adspersis ; pedibus brunneis ; 

 mandibuld superiore gricescente, inferiore f usco. 



Long. tot., 6|; unc; rostri, 1 ; alce, 3; caudee, 3; tarsi, 1. 



Hab. Mexico. 



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

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

 loAvs: 



Genus Scytalopus. 



Rostrum capite brevius, compressum, obtusum leviter recurvum. 



Nares basales, membrana tectse. 



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

 quarta, ąuintž, et sextS. aeąualibus. 



Cauda brevis, rotundata, (pennis externis brevissimis,) laxa. 



Tarsi elongati, atąue robusti, antrorsum scutellis tecti ; posterius 

 fasciis angustis cincti, sąuamis serpentum abdominalibus, haud dis- 

 similibus ; halluce elongato et robusto ; ungue elongato ; digitum 

 anteriorum, medio elongato et gracili. 



Scytalopus fuscus. Scg. corpore toto fuliginoso-nigro ; capitis 

 plumis nonnuncuam arg entato-gr išeis ; rostro nigro ; pedibus brun- 

 neis. 

 Long. tot., 2į unc; rostri, ^; al<e, lį; cauda, lį; tarsi, į. 

 Hab. in Fretu Magellanico, Chili, &c 



Hoc genus ad illud in quo Troglodytes verae amplectuntur maxi- 

 mam affinitatem demonstrat. 



