THRYOTHORUS. 93 
bird recently described by Taczanowski as 7. sclateri, and is probably inseparable from 
that species. 
Guatemalan specimens exhibit considerable diversity in the number of the black 
spots of the under plumage, some having the throat pure white, which in others is 
spotted like the breast. The example from Northern Yucatan shows the greatest 
divergence, being of a much greyer cast of plumage above, especially on the tail. 
B. 'THRYOTHORUS. 
Uropygium maculis celatis albis notatum. 
c. Rostrum mediocre. 
5. Thryothorus felix. (Tab. VII. fig. 1.) 
Thryothorus feliz, Scl. P.Z.S. 1859, p. 371"; Lawr. Mem. Bost. Soc. N. H. ii. p. 268° (partim). 
Pheugopedius feliz, Baird, Rev. Am. B. i. p. 186°. 
Supra murino-fuscus, pileo antico rufo ; loris et capitis lateribus albo nigroque striatis; alis dorso concoloribus, 
cauda nigricanti regulariter transfasciata; subtus cinnamomeo-rufescens, ventre medio albicante, gutture 
albo, crisso albo nigro transfasciato; rostri maxilla nigricante, mandibula et pedibus plumbeis. Long. 
tota 5:5, ale 2°4, caudee 2°6, rostri a rictu 0:9, tarsi 0°95. (Descr. exempl. ex Oaxaca, Mexico. Mus. nostr.) 
Hab. Muxico, Mazatlan (Grayson ?), Juquila (Boucard 1). 
M. Boucard discovered this Wren in May 1859 in the Mexican State of Oaxaca!; 
and it has since been traced as far north as Mazatlan 2, one of M. Boucard’s specimens 
having been compared with another from the latter place, and pronounced by Prof. 
Baird to agree in all essential respects °. 
Nothing is recorded of the habits of this Wren; but it may be assumed to resemble 
in this respect the following species, as Grayson’s note on 7’. awrenctt was made under 
the supposition that the birds of the Tres Marias Islands and Mazatlan were identical, 
which is now proved to be not absolutely the case. We have figured one of Boucard’s 
Oaxaca specimens, the same as the one which furnished Prof. Baird with his description 
of the species in the ‘ Review of American Birds ’®. 
6. Thryothorus lawrencii. 
Thryothorus felix B. lawrencii, Ridgw. Bull. Nutt. Orn, Club, 1878, p. 10'; Salv. Ibis, 1878, p. 196’. 
Thryothorus feliz, Grayson, Pr. Bost. Soc. N. H. xiv. p. 278° (nec Sclater). 
TJ’, felici affinis, sed corpore subtus fere albo, hypochondriis vix rufescenti tinctis differt; superciliis distinctis 
albis, genis immaculatis albis, et rostro graciliore magis incurvo quoque diversus. Long. tota 5-3, ale 
2:3, caude 2-2, rostri a rictu 0°95, tarsi 0-9. (Descr. exempl. typ. ex inss. Tres Marias, Mexico. U.S, 
Nat. Mus. no. 50818.) 
Hab. Mexico, Tres Marias Islands (Grayson 1%). 
Grayson® describes this Wren as a little larger than the one of the mainland, but 
with similar notes. He adds that it is very common in the Marias, where it is a 
