TROGLODYTES. 137 
Thryothorus ; in fact, connectipg the two; the tail is considerably 
longer than in the two species mentioned, more as in 7. ludovicianus. 
For the opportunity of first examining this species, I am in- 
debted to Mr. Osbert Salvin (No. 15, Salvin’s collection, from 
Oaxaca, type specimen received from Sallé). Since the above de- 
scription based on this specimen was written, the Institution has had 
a skin from Mazatlan, agreeing in all essential respects. 
Smith- Collec: | Sex | 
sonian| tor’s | and | Locality. PD Naa Received from 
No. No. | Ave. 
Collected by 
| 
erases” 
34,015 8 fof Mazatlan, Mex. June, 1862. A. iaiGery Grayson: ) 4 Grayson. 
(34,015.) Iris brown. 
~ TROGLODYTES, Vret1or. 
Troglodytes, Virmtor, Ois. Am. Sept. II, 1807, 52. (Type Troglodytes xdon.) 
By most European authors the European Wren is considered as 
the type of the genus Troglodytes—Gray giving 1807 as the date 
of its creation by Vieillot. In the Ois. Am. Sept., however, the 
true type is the edon there first named—the European species not 
being mentioned at all. . 
The characters of the genus are difficult to define, as they differ 
but little from Thryothorus, and some species connect the two very 
closely. The nostrils are as in Thryothorus, having an incumbent 
thickened scale overhanging the rather linear nostrils. The bill is 
shorter, or not longer than the head; straight, slender, and without 
notch. The tail is considerably graduated, generally shorter or not 
longer than the wings, which are much rounded. 
The bill is straighter, shorter, and more slender than in Thryo- 
thorus ; the size of the species much smaller; the colors plainer, 
more uniform, and almost entirely without the distinct light super- 
ciliary line so general in Thryothorus and Thryophilus. 
The Winter Wren, 7. hyemalis, agrees with the European species 
in proportionably much smaller and narrower tail, only about two- 
thirds the wing. TZ. brunneicollis agrees with it, to some extent, in 
this respect. In the others the wing and tail are nearly equal. 
The following synopsis may serve to illustrate some of the peculi- 
arities of the species :— 
