NO. 22G5. THE WREN GENUS NANNU8 BILLBERG—OBERUOLSER. 229 



Female ;! wing, 48-49 (average, 48.4) mm.; tail, 27-32 (29.3) ; ex- 

 posed culmen, 14-15 (14.3); tarsus, 18; middle toe without claw, 

 13.5-14.5 (13.9). 



Type-locality. — Kiska Harbor, Kiska Island, Aleutian Islands, 

 Alaska. 



Geographic distribution. — Kiska Island and Little Kiska Island, 

 Aleutian Islands, Alaska. 



Remarks. — This race shows its subspecific relationship with N annus 

 troglodytes 7nelige?^s by its individual variation, which, in occa- 

 sional specimens, practically bridges over the difference between it 

 and the latter, though normal specimens are decidedly different. 

 One example from Kiska Island (No. 65480, U.S.N.M.) is much more 

 rufescent than the rest and shows a tendency toward intergradation 

 with the bird from Unalas'ka Island. 



Detailed measurements of examples of this race arc given below : 



ileasuremcntfi of speciiiiev.s of N(in7iu>! trofjioilyics kisJcciisis. 



Used in measurement averages on pp. 228-229. 



NANNUS TROGLODYTES ALASCENSIS (Baird). 



("Type. 



Troglodytes alascensis B.mkd, Trans. Cliitago Acud. Sci., vol. 1, pt. 2, 1SG9, 

 p. 315, pi. 30, fig. 3. 



jSubspecific characters. — Similar to N annus troglodytes kiskensis, 

 but wing and tail longer; bill decidedly, tarsus and middle toe with- 

 out claw somewhat, shorter; upper parts darker, more rufescent; 

 lower parts rather more deeply ochraceous, and posteriorly with 

 narrower, less deeply blackish bars. 



Measurements. — Male:^ wing, 53-55 (average, 54) mm.; tail, 32,5- 

 35.5 (34); exposed culmen, 13-13.5 (13.3); tarsus, 18-18.5 (18.2); 

 middle toe without claw, 13-14 (13.5). 



1 Four specimens, from Kiska Island, Alaska. 



* Four specimens, from the Pribilof Islands, Alaska. 



