Vol. XIV 
aie ANTHONY, Mew Birds from Lower California. 167 
has a semi-obsolete bar of about 1 mm. The middle rectrices are 
also less plainly barred in the mainland specimen, the bars becom- 
ing somewhat obsolete near the shaft. 
Cerros Island Wrens were not common at any point on the 
island, though more were seen about the pine timber on the 
higher ridges. Mr. L. Belding secured specimens of the species 
several years ago, but owing to their poor plumage no attempt was 
made to separate them. 
COMPARATIVE MEASUREMENTS. 
Aol 
freee iis 
a ae Bat igs Remarks. 
lee fel wey Ol = 
= re, | © = 
Thryothorus b. spilurus. Sy, | 12.5 | 17 Rosalia Bay, L. Calif. 
{ 
T. cerroensis. 48 | 55 | 11-5 | 18 | Type of species. 
T. leucophrys. | 55 | 60 | 16 | 20.5 ib AAT ee 
Harporhynchus lecontei arenicola, subsp. nov. DESERT 
THRASHER. 
Subsp. char.— Ditftering from ZH. lecontez in upper parts being darker and 
grayer, tail blacker and breast gray, tail shorter (?). 
Type, &, No. 7346, coll. A. W. A., Rosalia Bay, Lower California, 
Aug. 20, 1896. Above smoke gray; pileum and cervix between drab and 
broccoli brown; chin and belly white; throat, breast and flanks approach- 
ing drab gray; crissum buffy clay color; tail slaty black, each feather 
marked at tip with gray. Wing,97 mm.; tail, 136; culmen, 31; tarsus, 30. 
The region immediately back from the beach at Rosalia and 
Playa Maria Bays is a series of wind swept sand dunes, with 
scarcely any vegetation. A few hardy shrubs and yuccas struggle 
for existence and afford shelter for quite a number of Thrashers. 
A series of sixteen was secured with little effort, though the 
present race well maintains the reputation of the species for 
shyness. On several occasions they were seen on the beach, and 
a few were found inland, where A. cinereus mearnsi was more 
common. They were nowhere so plenty as in the sand dunes 
