382 
Mr. R. F. Tomes on White’s Thrush. 
ii hi 
Length from point of bill to end of tail . . 12 2 
„ of tail ........... 45 
„ of bill, along the ridge *■.... 0 10 
„ of bill, gape line ....... 13 
„ of wing from carpal joint, following 
its anterior curve ...... 73 
,, of tarsus ......... 15 
,, of middle toe and claw.14 
,, of hind toe and claw ..... 12 
Expanse of wings.20 6 
The digestive organs differ somewhat from those of such of 
our British Thrushes as I have been able to make comparison 
with, in being strictly adapted to an insectivorous diet. The 
tongue, tapering to a smooth cleft point, is somewhat horny, 
and rather distinctly serrated on its upper surface near the root. 
(Esophagus of moderate length, without crop or dilatation, but 
rather wide; proventriculus moderately well developed, much 
more so than in the Blackbird, relatively much as in the Song- 
thrush. Stomach membranous, indicative of a more insectivorous 
regimen than the Blackbird; of small size, scarcely exceeding in 
this particular that of the much smaller Song-thrush; irregularly 
oblong, its greatest diameter being at right angles to a line 
between the two orifices. Intestine rather short in relation to 
the size of the bird, only exceeding that of the Blackbird by 
three or four inches, whilst in the bulk of the two birds there is 
manifestly a much greater difference than this. It is of medium 
size, and decreases evenly to the caeca. The latter are much 
more distinct than in the Blackbird, but somewhat like those of 
the Song-thrush. Cloaca large. 
The following are the dimensions of these parts - 
ii in 
Length of the oesophagus.4 3 
Breadth of do. .......... 04 
Length of the proventriculus.0 8 
„ between the two orifices of the stomach 0 4 
„ of the stomach measured at right 
angles to the last dimension . . 0 10 
„ of the intestine . .21 0 
