94 TROGLODYTIDA. 
constant resident, and the only species of Wren found there, where its lively song 
chimes in with those of the other songsters of the woods at all hours of the day. 
We are indebted to Mr. Ridgway for his kindness in lending us the type specimen 
of this bird, which, compared with one of M. Boucard’s typical examples of 7. feliz, 
presents the differences pointed out above. ‘The island habitat of 7. lawrencii renders 
it extremely improbable that these distinctions will be broken down by intermediate 
links; and we are therefore of opinion that 7. /awrencii should be kept apart. 
7. Thryothorus berlandieri. 
Thryothorus berlanderi, Baird, B. N. Am. p. 362, t. 83. f. 1° (ex Couch, MS.); Rev. Am. B. i. 
p 124°. | 
Thryothorus ludovicianus, var. berlandieri, Baird, Brew. & Ridgw. N. Am. B. i. p. 144°; Merrill, 
Pr. U.S. Nat. Mus. i. p. 121+. 
Thryothorus ludovicianus berlandieri, Sennett, Bull. U.S. Geol. Surv. iv. p. 8°. 
Supra rufescenti-brunneus, alis et cauda vix nigro transfasciatis, uropygio maculis celatis albis ornato ; super- 
ciliis albis, supra nigro marginatis ; cervicis lateralibus nigro maculatis; subtus rufescens, gula et abdomine 
medio albicantioribus; hypochondriis obsolete fusco transfasciatis; rostro et pedibus corylinis. Long. 
tota 5°7, ale 2:4, caude 2-1, rostri a rictu 0-9, tarsi 0-9. (Descr. exempl. ex Mexico. Mus. P. L. 
Sclater.) 
Hab. Norta America, Rio Grande valley (Sennett®, Merril/*)—MeExico, Boquillo, 
Nuevo Leon and San Diego (Couch 12). 
The original specimens of this race of the Carolina Wren (T. ludovicianus) were 
obtained by Lieut. Couch at Neuvo Leon and San Diego, in Mexico; and it has since 
been found in abundance in the valley of the lower Rio Grande. Its distinctness from 
T. ludovicianus is not very pronounced; and Dr. Coues, in examining Mr. Sennett’s 
specimens °, speaks of them as being rather puzzling, owing to their being intermediate 
between TZ. ludovicianus proper and the full development of 7. berlandieri. He 
decided, however, to associate them with the latter bird, which, according to Messrs. 
Baird, Brewer, and Ridgway *, bears to the former about the same relationship that 
Harporhynchus longirostris does to H. rufus. 
Mr. Sennett procured several nests of this Wren during his stay on the lower Rio 
Grande. These were found near the ground, in hollow trees, stumps, and even in dead 
limbs lying on the ground. The eggs are described as being of a white or pinkish 
colour, with brown and purple specks and blotches distributed over the whole surface. 
We have no record of the occurrence of the species in Central or Southern Mexico. 
8. Thryothorus albinucha, (Tab. VII. fig. 2.) 
Troglodytes albinucha, Cabot, Pr. Bost. Soc. N. H. ii. p. 2587. 
