32. CISTOTHOEUS. 245 



inrlistincfc tips of blackish brown, producing a slightly barred ap- 

 pearance ; thighs deep sandy l)uff; under wing-coverts and edging 

 to the inner web of the quills below isabellino colour. Total length 

 4-3 inches, culmon 0-5, wing 1-S.5, tail 1-6, tarsus 0-65. 



The La Plata Marsh- Wrou is a common bird in Chili and Patagonia, 

 ranging as far as Southern Brazil and Bolivia. It also inhabits tlie 

 Falkland Islands. 



a. Ad. sk. Port Louis, Falkland Islands. Lieut. A. Smith fP-]- 



b, c. 2 ^^- sk. Falkland Islands. Antarctic Expedition. 

 d, e. Ad. sk. East Falklands. Antarctic Expedition. 

 /. Ad. sk. Falkland Islands. J. Gould, Esq. 



(/. $ ad. sk. Santiago, Chili. Herr Landbeck [CI. 



h. Ad. sk. Straits of Magellan {Capt. Kiyig). The Admiralty [P.J. 



5. Cistothorus polyglottus. 



Todo voz, Azara, Apunt. ii. p. 20 ; Ilaril. Bid. Azara, p. 10. 

 Thryothorus polyglottus, Vieill. N. Diet, d'llist. Nat. xxxiv. p. ,59 



(ex Azara) ; Bp. Consp. i. p. 221 ; Bunn. Th. Bras. ii. p. 136. 

 Troglodytes omnisonus, LicJit. in Mas. Berol. ; Naum. Viig. DeutscJil. 



iii. table to p. 724. 

 Troglodytes interscapularis, Von Noi-dm. in Erman^s Reis. p. 90, 



Atlas, pi. 13 ; Licht. Nomencl. Av. Berol. p. 34 : Graij, Hand-l. B. 



i. p. 190, no. 2604. 

 Troglodytes polyglottus, Gray, Gen. B. i. p. 158 ; id. Hand-l. B. i. 



p. 190, no. 2606. 

 Cistothorus iuterseapularis, Cab. Mus. Hein. Th. i. p. 78, note. 

 Cistothorus iuterseapularis, Bwm. Th. Bras. ii. p. 136 ; Pek. Orn. 



Bras. p. 414. 

 Cistothorus elegans, Scl. <§■ Salv. Ibis, 1859, p. 28 ; Scl. Cat. Atner. 



B. p. 30 ; Baird, Review Amer. B. p. 146 ; Salv. F. Z. S. 1S70, 



p. 182 ; Scl. ^- Salv. Nomencl. Av. Neutr. p. 7 ; Baird, Breiver, 8f 



Ridyiu. Hist. N. Amer. B. i. p. 159 ; Salv. 8f Godm. Biol. Centr.- 



Amer., Aves, i. pi. vii. fig. 3. 

 Cistothorus polyglottus, I'elz. Orn. Bras. pp. 48,414; Scl. ^- Salv. 



P. Z.& 1879, "pp. 493, 593; Salr. ^- Godm. Biol. Centr.-A7ner., 



Aves, p. 105 (nee V.). 

 Cistothorus ?equatorialis, Laicr. Ann. Lye. N. Y. x. p. 3. 

 Cistothorus stellaris, var. elegans, Coties, B. N.-lVe4,^. 36; id. B. 



Color. Vail. p. 180. 

 Cistothorus graminicola, Tacz. P.Z. S. 1874, p. 130. 

 Cistothorus liumiyagaus, Tacz. P. Z. S. 1874, p. 504. 



Adult female (Duciias, Guatemala : type of C. elegaivi). General 

 colour above blackish, streaked with fulvous brown on the crown and 

 sides of the nape ; centre of the nape and hind neck uniform brown ; 

 mantle black, streaked with buffy white ; .scapulars and wing-coverts 

 brown, sliglitly mottled with a few blackLsh bars, and streaked 

 along the shafts with buffy white ; greater wing-coverts lighter 

 fulvous brown, barred across with black ; quills externally brown, 

 barred with black and fulvous brown, paler on the outer edge of 

 the primaries ; lower l)ack ami rump brown, with a few bars of 

 dusky black, the latter part slightly more rufescent ; upper tail-coverts 



