486 SHUFELDT. (VoL. Ill. 
allow us to distinguish between the genera in some cases — not 
always an easy matter. For instance, in the numerous skulls 
of Warblers before me, the superior osseous mandible of Den- 
dreca estiva is markedly more like Chamea in this particular 
than is the Prothonotary (Protonotaria), and Mnzoiilia more 
than either. 
In this particular Psaltriparus plumbeus (Fig. 3) is most like 
Chamea ; Accentor agrees better with some of our M/nzotdtide ; 
while a departure becomes evident as we pass to certain Titmice. 
Figure 1.— Chamea fasciata. 
Figure 2.— Accentor modularis. 
figure 3.— Psaltriparus plumbeus. 
Figure 4.— Regulus satrapa. 
Figure 5.— Parus | Lophophanes] tnornatus griseus. 
Figure 6.— Parus gambeli. 
Figure 7.— Salpinctes obsoletus. 
Figure 8.— Certhia familiaris americana. 
These figures are all right lateral views, and life size, by the author, from the 
specimens. 
