TIIRYOTIIORUS. 123 



a. Wings considerably longer than tail ; 



bill shorter than tarsus . . . gnlhraithi. 



B. Wings little longer than tail ; bill 



longer than tarsus .... lonijiruslTis.^ 



B. Head black, with white cheek-patch ; rest of upper part 

 deep chestnut. 



a. Throat white, passing into chestnut behind. Sides 



obsoletely banded with black .... caslaneus. 



b. Beneath white, tinged with rufous on abdomen. 



Throat plain ; rest of under parts barred trans- 

 versely with black ...... nigrkapiUus. 



c. Beneath white, tinged with chestnut on flanks and 



anal region. Whole under parts from bill to tail 



banded transversely with black . . . schoitii. 



The following is the more natural arrangement of the species just 

 mentioned, as based upon their peculiarities of form : — 



Thryophilus' rufalhus, poliopJeura, sindlua, mndestux, alhipectus, gulbraithi, 



sinoladis, lomjirostris, castaiieus, niyi-ica/ii/lus, schottii. 

 Pheugopedius : fasciato-ventris, pleurostivtus? maculipeclus, rutilus, Jelix, 



ciiraijd, iiielaiXos. 

 Thryothorus : ludovicianus. berlandieri, petenicus. 

 Thryomanes : bewickii, spilui-us, leucogasler. 



These are followed by the species of Troglodytes, Anorthiira, Cisto- 

 thorus, and Telmatodytes, synopses of wiiich will \k given 

 further on. 



The following species of the group of Troglodytidse. I have not had 

 the opportunity of examining : — 



Thryothorus pleurostictus, Sclater, Ibis, 1860, 30 <'Guatemala). — Ib. 



Catal. 18,;i, 21, no. 13u. See page 121 (•' Gulf of Nicoya," Salviii in letter). 

 Thryothorus murinus, Haktladb, Rev. and Mag. Zool. 1852, 4 (Hio Frio, 



between Puebla and City of Mexico). (How near petenicus and alhinucha?) 



Troglodytes albinucha, Cabot, Pr. Bost. N. H. See. II, 1847, 258 (Yuca- 

 tan). Possibly T. petenicus, and if so, prior to it. 



a. Thryothorus. 



Tiiryotlioriis ludovicianus. 



Sylvia ludoviciana, Lath. Ind. Orn. II, 1790, 548. — TrogJor\i/tfis ludo- 

 vicianus, Light. Verz. 1823, 35 ; also of Bonaparte and Audubon. — 

 Prince Max. Cab. Jour. VI, 1858, 110. — Thryothorus ludovicianus, 

 Bon. List, 183'<, etc.— Cab. Mus. Hein. I, 1850, 78.— Baird, Birds 

 N. Am. 1858, StU.— Sclater, Catal. 1861, 20. 



' See note on longirostris and its allies, under T. gulbraithi, p. 132. 



