GEN. 53-58 OF KEY. 
131. VIREO BELLII Avup. 
Bell’s Vireo. 
132. VIREO PUSILLUS Cougs. 
Least Vireo. 
133. VIREO ATRICAPILLUS Woopu. 
Biack-headed Vireo. 
134. COLLURIO BOREALIS (V.) Bo. 
Great Northern Shrike; Butcherbird. 
135. COLLURIO LUDOVICIANUS (L.) Bp. 
Loggerhead shrike. 
135a. COLLURIO LUDOVICIANUS (L.) Bp., 
var. EXCUBITOROIDES (Sw.) Cs. 
White-rumped Shrike. 
136. HESPERIPHONA VESPERTINA (Coop.) Br. 
Evening Grosbeak. 
137. PINICOLA ENUCLEATOR (L.) V. 
Pine Grosbeak. ° 
[138.]? PYRRHULA CASSINI (Bp.) Trisrr. 
Cassin’s Bullifinech. 
1329. CARPODACUS PURPUREUS (Gm.) Gr. 
Purple Finch. 
140. CARPODACUS CASSINI Bp. 
Cassin’s Purple Finch. 
141. CARPODACUS FRONTALIS (Say) Gr. 
Crimson-fronted Finch; House Finch. 
14la.* CARPODACUS FRONTALIS (Say) Caz., 
var. HAMORRHOUS (Wagl.) Ridg. 
Mexican Purpie Finch. 

*Not in the Key. See Ridgway, Am. Jour. Sci. Art, v, p. 39. 
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