200 TEOGLODYTIDiE. 



albicante. Long, tota 4-4, al^ 1-9, caud* 17, rostri a rictu 0-8, tarsi 0-8. (Descr. maris ex ins. Socorro. 

 U.S. Nat. Mus. no. 58259.) 



Eah. Mexico, Socorro Island {Grayson i ^ 3). 



In the tint of the upper plumage this Wren resembles T. aedon ; but the back is 

 rather greyer in colour. Beneath it is nearly white, without dusky markings. T. inter- 

 medius is altogether a browner bird both above and below; and from it, and also from 

 T. aedon, T. insularis differs in its long slender curved bill and in the greater distinct- 

 ness of the superciliary line. 



Grayson, the only naturalist who has seen it, describes the Socorro Wren as the 

 commonest bird on the island, where its song is to be heard throughout the day, 

 either amongst the trees or brush-covered rocks that crop out everywhere. Like all 

 the indigenous birds of the island, it was very tame, and would climb about old logs 

 or creep over the trunks of standing trees, and even turn over leaves at his feet in 

 search of food, every now and then stopping to utter from a twig a cheerful song of 

 considerable volume for so small a bird 2. He adds that he often saw it feeding on 

 dead land-crabs, Crustacea being eaten more or less by all the birds of the island except 

 the Parrots and Pigeons ^. 



Grayson describes ^ the iris of the living bird as brown, the bill brown above, the 

 mandible paler, the feet brown with black nails. 



3. Troglodytes intermedius. 



Troglodytes intermedius, Cat. J. £. Orn. 1860j p. 407'; Bairdj Rev. Am. B. i. p. 142°; Lawr. Ann. 



Lye. N. Y. ix. pp. 93', 199*. 

 Troglodytes aedon, Sel & Salv. Ibis, 1859, p. 9'; Salv. Ibis, 1866, p. 202" (nee Vieillot). 

 Troglodytes hypaedon, Sel. P. Z. S. 1861, p. 128", 1862, p. 18'. 

 Troglodytes, sp. ?, Sel. P. Z. S. 1859, p. 372°. 

 Troglodytes inquietus, Lawr. Ann. Lye. N. Y. ix. p. 93 '° (nee Baird). 



Supra brunneus, alis et cauda fusco-nigro frequenter transfasciatis ; subtus paUidior, hypocliondriis vix, crisso 

 distinote nigro transvittatis, rostri maxilla brunnea, mandibula et pedibus corylinis. Long, tota 4*5, 

 alae 2-1, caudae 1-75, rostri a rictu 0-75, tarsi 0-7. (Descr. exempl. ex DueSas, Guatemala. Mns. nostr.) 



Edb. Mexico ^ ^, Totontepec and Capulalpam {Boucard ^), Merida, Yucatan (Schott *, 

 Guumer) ; Guatemala, Duefias, Panajachel, Quezaltenango, Coban, &c., and in all 

 villages throughout the country (0. S. & F. B. G.) ; Costa Eica, San Jose and 

 Quebrada Honda [Hoffmann ^), San Jose and Barranca {Carmiol^). 



This is the common House- Wren of Guatemala and Costa Eica, being doubtless 

 found in the intermediate country. It also spreads northwards to Yucatan and the 

 Mexican State of Oaxaca, though we have as yet no record of it from Tehuantepec nor 

 yet from Western Mexico. In Eastern Mexico its place seems to be taken by T. aedon; 



