278 Mr. R. Swinhoe on Formosan Ornithology. 
2. M. flavirostris (Horsf.), ( Turdus flavirostris, Horsf. Trans. 
Linn. Soc. xiii. p. 149 : M. metallicus , Temm. PI. Col. 170), with 
a very large yellow bill. Hab. Java. 
3. M. cceruleus (Scop.), (Sclater, ‘ Ibis/ 1860, p. 55), with 
small black bill. Hab. Hills of Southern China. 
The subgenus Arrenga has hitherto comprised only the two 
following forms:— 
1. M. cyaneus (Horsf.). 
Turdus cyaneus , Horsf. Trans. Linn. Soc. xiii. p. 149. 
Pitta glaucina , Temm. Pi. Col. 194. 
A small species from Java, purplish on the upper parts and 
blackish brown on the lower. 
2. M. horsfieldii, Vigors (Gould’s ‘Century/ pi. 20). 
A larger species, dark, with very bright-blue shoulder-mark 
and frontal hand, from the Nilgiri Hills, India. 
To this last group our bird belongs, and to the last species in 
particular it is closely affine. 
Note on a specimen shot at Tamsuy, 27th March, 1861.— 
Length 13^ in.; wing 6-|-; tarsi 2§; tail 5 T ^, of 12 feathers, 
somewhat graduated, giving a rounded form to the tail when 
expanded; rectrices broad and rounded, each feather pointed at 
the shaft, which projects in. beyond the web (this is so in all 
the specimens, and 1 think is partly due to the abrasion of the 
web). Bill, legs, and claws black. Tongue horny, concave, 
rounded at the tip, which is split into two sets of cilia; inside 
of bill and tongue blackish olive, paling into light dingy olive- 
yellow flesh-colour as it descends to the glottis. Iris deep brown. 
Ear very small, round, and white, the aperture being round and 
central. Plumage purplish black. Lore and band over bill 
deep black; above this an obscure band of purplish blue. 
Feathers of breast and belly broadly margined with ultramarine 
or purplish blue; small wing-coverts near the shoulder mar¬ 
gined with a bright tint of the same. Wings and tail black, 
washed with purple, chiefly on the outer webs of the feathers. 
Feathers of the flanks and belly having the greater part of their 
basal webs white; those of the remaining feathers of the body 
