l8o Oberholser, The Wrens oj the Genus Anorf/iiira. LApr 



birds from the British Isles. ^ There is a surprisingly small amount 

 of geographical variation in this species, considering its extensive 

 range. 



Olbiorchilus troglodytes bergensis {Stejriege/-). 



Troglodytes parviclus bergensis, Stejneger, Zeitschr. Gesam. Orn. I, 

 1884, pp. 9, 10. 



Type locality. — Bergen, Norway. 



Geographical distribution. — Norway and probably Sweden. 



This race is closely allied to true troglodytes, though apparently 

 separable on the average characters of more distinct dark barring 

 on back and rump and duller, less rufescent color of the upper parts. 

 The type is extreme in these respects, and is by no means equalled 

 by any of the several other specimens examined. 



Olbiorchilus troglodytes borealis {Fischer). 



Troglodytes borealis Fischer, Journ. f. Orn. 1861, p. 14, pi. i. 



Type locality. — Faeroe Islands. 



Geographical distribution. — The Faeroe Islands and Iceland. 



This form is so closely connected with true troglodytes, by 

 individual variation of both color and markings, that notwith- 

 standing its island home, a trinomial better expresses its relation- 

 ship. There seems to be no difference in size. 



Olbiorchilus troglodytes pallidus {Hume). 



Troglodytes pallidus Hume, Straj' Feathers, 1875, p. 219, note. 

 Type locality. — Kashgar, Eastern Turkestan. 



Geographical distribution. — Western part of eastern Turkestan, with 

 probably the adjoining region of central Asia. 



A perfectly good form, though apparently but subspecifically 

 distinct from true troglodytes . 



Elachura Oates. 



Elachura Oates, Faun. Brit. India, I, 1SS9, p. 339. 



Type. — Troglodytes punctatus Blyth. 



Range. — Cachar and vicinity of Darjeeling, northeastern India. 



* Cf. Dresser, Ibis, 1886, p. 43. 



