LETTERS TO THE EDITOR. 171 
but you will see when you compare your examples with the 
above dimensions. I think I would discard Horornis assi- 
milisas a bad species. TZribura flaviventris also appears rather 
doubtful, for we have not met with the bird since Hodgson 
got it. 
On looking at my Muddapur killed Stonechats, one, an 
autumnal bird, turns out to be leucura. So the bird zs 
found about that part of the country after all. It is a redder 
one than those I got in Sind. Itis not moulted and in ragged 
summer plumage. 
14th April 1881. W. E. Brooxs. 
Extract from Ann. and Mag. of Natural History, Vol. XVIII, 
1846, p. 252. 
M. SuNDEVALL ON THE BirDs oF CALCUTTA. 
18.—Acanthiza trochiloides, n. 
Olivaceo-viridis, subtus alba, antice flavo tincta; cauda 
integra penna extima breviora, apice intus alba. Linea per 
oculos fusca. 
3 15th February.—Caput paullulum fusco tinctum ; superci- 
lia elongata pallide flava. Ala subtus alba; tectrices superiores 
apice pallescentes. Cauda fuscescens, obsolete transversim - 
undato-micans. Rostrum subtus album, superne et pedes 
pallide fusci. Long. 5 poll; ala 47 millim; tarsus 19; cauda 
45; rostrum efronte 9. Rostrum apice leviter compressum. 
Remiges 3 antice gradate ; 2a—10a; 4 et 5 reliquis longiores. 
Penne cubiti ad 5-6 alee flexe extense. 
This little bird has a greater interest for us on account of 
its remarkable resemblance to our Sylvia trochilus. I have 
only seen the above described specimen, and can say nothing 
else about its way of living than that even in its actions 
it has an extraordinary resemblance to Sylvia trochilus, so 
that I fully believed I had found that species until an 
examination of its flattened, much broader beak, and the some- 
what different formed wings proved my mistake. These are 
the only points in which the genus Acanthiza (Vig. e¢ Horsf.) 
differs from our Sylvia. The beak is even unlike that of our 
S. hippolais. 
In New Holland there are several species to be found. 
I heard no note from the bird described. This is most likely 
the bird to which authors allude who speak about the Indian 
Sylvia trochilus. (For example, Edwards in the text to 
plate 278). 
