Vol. XX Twelfth Supplement to the A, O. U. Check-List. 361 
48tc. Perisoreus canadensis nigricapillus vs. 7. ¢ fumi. 
Srons (cf. Hower, Osprey, 1902, 105). 
485. Perisoreus obscurus vs. /. canadensis obscurus (cf. 
Hower, Osprey, 1902, 105). 
485a. Perisoreus obscurus griseus vs. 7. canadensis (g. 
Howe, Osprey, 1902, 105). 
The proposed changes in the above three cases appear to be 
quite unnecessary. 
SUBGENUS Picicorvus vs. genus /icicorvus (co Cours, Osprey, 
III, 1899, 144). Péeicorvus is not considered worthy of full 
generic rank (cg% Seventh Suppl., Auk, 1895, 167). 
d0la. Sturnella magna hoopesi vs. S. m. mexicana (cf. 
CuHapMAN, Bull. Am. Mus. N. H., XIII, 1900, 298, 303). 
This form is considered to be sufficiently distinct from S. m. 
mexicana to retain its present status in the Check-List. 
590d. Ammodramus maritimus macgillivraii vs. 4. mart- 
timus (gf Hower, Contr. Am. Orn., I, 1902, 32). The Com- 
mittee is unable to find sufficient grounds for reversing its 
decision in this case. 
6220, 6,c. Lanius ludovicianus excubitorides, gambeli, 
and anthonyi vs. Z. /udovictanus (of. Grant, Novit. Zool. 
1902, 461). 
No change is considered necessary in respect to the status of 
these subspecies of Zanzus. 
Dendroica montana vs. D. virens (gf Rineway, Bull. U. S. 
Nat. Mus., No. 50, pt. II, 1902, 784). The identification of 
Wilson’s Sy/via montana with Dendroica virens appears to be 
not without question, and its present position in the Hypo- 
thetical List is thought to best represent its status. 
7138a. Heleodytes brunneicapillus bryanti vs. 77. drunne:- 
capillus and 
