94 TEOGLODTTID^. 



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. Eidgway for his kindness in lending us the type specimen 

 of this bird, which, compared with one of M. Boucard's typical examples of T. felix, 

 presents the differences pointed out above. The island habitat of T. lawrencii renders 

 it extremely improbable that these distinctions will be broken down by intermediate 

 links ; and we are therefore of opinion that T. lawrencii should be kept apart. 



7. Thryothorus berlandieri. 



Thryothorus berlandieri, Baird, B. N. Am. p. 362, t. 83. f. 1 ' (ex Couch, MS.) ; Eev. Am. B. i. 



pl24'. 

 Thryothorus ludovicianus, var. berlandieri, Baird, Brew. & Ridgw. N. Am. B. i. p. 144%- Merrill, 



Pr. U.S. Nat. Mus. i. p. 131 *. 

 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 omato ; euper- 

 ciliis albis, supra nigro marginatis ; cervicis lateralibus nigro maculatis ; subtus ruf escens, gula et abdomine 

 medio albicantioribus ; hypochondriis obsolete fusco transfasciatis j rostro et pedibus corylinis. Long. 

 tota 5-7, alse 2-4, caudse 2-1, rostri a rictu 0-9, tarsi 0-9. (Descr. exempl. ex Mexico. Mus. P. L. 

 Sclater.) 



Hah. NoKTH Amebica, Rio Grande valley {Sennett^, Merrill^). — Mexico, Boquillo, 

 Nuevo Leon and San Diego {Couch ^ ^). 



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 Eio 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 T. ludovicianus proper and the full development of T. berlandieri. He 

 decided, however, to associate them with the latter bird, which, according to Messrs. 

 Baird, Brewer, and Eidgway ^, bears to the former about the same relationship that 

 Earporhynchus longirostris does to H. rufus. 



Mr. Sennett procured several nests of this Wren during his stay on the lower Eio 

 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 alhinucha. (Tab. vii. fig. 2.) 



Troglodytes albinucha, Cabot, Pr. Eost. Soe. N. H. ii. p. 258 \ 



