TURDIDA. — CLXXIX. 313 
bbb. Reddish color of back chiefly confined to the tail. 
1023, H. aonalaschkee (Gmelin). Hermit Turvsx. Olive 
brown above, becoming rufous on rump and tail; breast with nu- 
merous, rather distinct, dusky spots; a whitish orbital ring. L. 7. 
W. 34. T. 2}. N. Am., migrating early; a sweet singer. The 
Eastern bird, var. pallasi Cabanis, is more “smoky” in hue, the 
tail a little less red, the bill larger. (From Unalaska Island.) 
533. MERULA Leach. (Lat., merle or blackbird.) 
1024, M. migratoria (L.). Rosin. AMERICAN Rep Breast. 
Olive gray above; head and tail blackish ; throat white, with black 
streaks; under parts chestnut brown. L.93. W.5}. 1.4}. N. 
Am., everywhere abundant; a familiar, easy-going bird. 
534. HESPBROCICHLA Baird. (éo7épa, sunset; 
xixdn, thrush.) 
1025. H. nzevia (Gmelin). Orrcon Rosin. Slate color, or- 
ange brown below ; throat not streaked; @ with black collar. L. 
93, W.5. T.4. Pacific slope, rarely straying E. (Lat., spotted.) 
535. SIALIA Swainson. (cadis, name of some bird ; 
ciados, plump.) 
1026. S. sialis (L.). Common Buus Birp. Bright blue above, 
throat and breast reddish brown (“the sky on its back and the 
earth on its breast”); belly white; 9 usually duller, with a brown- 
ish tinge on back; young, as in others, spotted. L.63. W. 4. 
T. 3. E.N. Am., abundant; breeds everywhere; one of our most 
attractive and familiar birds. . 
1027. S. mexicana Swainson. WersTERN Biue Birp. Head, 
neck all around and upper parts generally, deep bright blue; back 
with more or less chestnut ; breast and sides reddish brown, throat 
bluish; size of last. Pacific slope, rarely E. to Iowa. 
1028. S. arctica Swainson. Rocky Mountarn Bive Birp. 
Rich greenish blue; breast also blue; belly white; 9 with pale 
drab instead of blue, on breast, etc.; size of others, or smaller. 
Rocky Mountains, E. to Missouri R.; the prettiest of thrushes and 
one of the most attractive of our birds. 
With this beautiful bird we close the long series of feathered 
Sauropsida. 
The next class, the Mammalia, is widely different from the birds, 
but its lowest forms, the Monotremes, approach the common rep- 
tilian stock from which both mammals and birds have probably 
sprung. 
