4 REVIEW OF AMERICAN BIRDS. [PART I. 
fectly distinct. Even in the first section individuals, in nearly all 
the species, may be noted with indications of separate scutelle. 
The Turdus gigas of Fraser has been placed among the typical 
Thrushes, but realJy differs in many important points, as does still 
more the 7. aurantius of Jamaica, in shorter wings, much longer 
lst primary, very long tarsi, and other characters of Mimocichla. 
I have accordingly been obliged to consider as a good genus the 
section Semimerula of Sclater, although I would prefer to consider 
aurantius as the type rather than g?gas and its allies :— 
A. Turdinze.—Tarsus covered anteriorly with a continuous plate. 
1. Wings decidedly longer than the tail,! which is nearly 
even. Bill considerably shorter than the head. 
First quill one-half to one-third the second. Wings 
rounded. Tarsus longer than the head; out- 
stretched toes reaching beyond the tail . . Catharus. 
First quill usually not one-fourth the second. Wings 
pointed. Tarsus hardly the length of head, but 
yet longer than middle toe; outstretched toes 
falling short of tip of tail : : : - Turdus. 
Wings as in Turdus. Tarsus shorter than middle 
toe. Sill short and very broad; width greater 
than distance from nostril to tip» - . Platycichla? 
First quill more than one-third the second. Wings 
rounded. Tarsus considerably longer than 
head ; outstretched toes falling short of tip of 
tail. Billlengthened . ; - = . Semimerula. 
2. Wings about equal to the tail, which is somewhat 
graduated. Bill stout, nearly as long as the head. 
Tarsus lengthened, considerably longer than mid- 
dle toe and claw. 
First quill more than one-third the second. Rictal 
bristles very short . - . - ‘ . Mimocichila. 
3. Wings longer than the tail, which is considerably 
rounded. Bill longer than the head, and slightly 
decurved. 
First quill more than half the longest . : . Ehamphocinclus. 
B. Miminz.—tTarsi scutellate anteriorly ; scutellee seven. 
4. Wings decidedly longer than the tail, which is nearly 
even. Tarsus as long as the head. 
Tarsus hardly longer than middle toe and claw. 
Bill about equal to the head, decidedly notched ; 
1 In the present work the length of the tail is measured from the coccyx, 
inside of the skin, and not, as usually the case, from the base of the quills at 
their insertion. The wings are measured from the carpal joint, with dividers. 
2 Possibly Cichlopsis, Cab., but differing much from his description. 
