iSq^^l G\u>i'^K-L\., T/ic Sail i\uo/(is /i'oiA- Wren. 27 J 



Harporhynchus redivivus pasadenensis, new subspecies. 



Southern California Thrashicr. 



Type, $ ad., No. 2056, Coll. J. G., Pasadena, California, Feb. 6, 1S97. 

 General coloration similar to that of the northern form, but plumage 

 ashler or less distincth- brown. Whole upper parts dark sepia, -where in 

 the case of the northern bird there is a well-marked tinge of a brown 

 approximating Isabella color; this difference is most noticeable on the 

 top of the head. Lower parts likewise less brightl}' tinted; pectoi'al band 

 darker and grayer; throat nearly pure white, this character being quite 

 pronounced. 



Measurements. — Average of i3 specimens of //. redivirii": wing, 3.96; 

 tail, 5.52; bill from nostril, 1.17; tarsus, 1.39. 



Average of 17 specimens of //. ;-. pasadc7iensis: wing, 3.92; tail, "5.30; 

 bill from nostril, 1.2 1 ; tarsus, 1.36. 



Nearly all my northern specimens have the throat patch 

 strongly suffused with Isabella color. Unfortunately, I have not 

 been able to obtain specimens from Monterey, but birds from 

 adjoining counties exhibit the character of true redivivus. Speci- 

 mens from the Sacramento Valley (Amador County, etc.) show 

 the most extreme brown type of coloration. My series of pasa- 

 denensis is quite large, but there is remarkably little variation. 

 Badly worn specimens of the two races, however, are scarcely 

 distinguishable. 



THE SAN NICOLAS ROCK WREN. 



BY JOSEPH GRINNELL. 



San Nicolas Island lies between sixty and seventy miles 

 from the nearest point of the southern California mainland, and 

 is the most remote of the Santa Barbara Group. It is seven 

 miles long by three wide, and resembles a huge sand-dune. The 

 yellow shifting sands support but very scant vegetation, and conse- 

 quently insects are few. Yet, in the spring of 1897, I found Rock 

 Wrens to be quite numerous on most parts of the island, frequent- 



