WILD ANIMALS IN CAPTIVITY 
attentive watching for the purpose of detecting and ascer- 
taining in what other animals this habit may be found. 
The result of close observation has brought to light the 
same habit in two species of birds belonging to a family 
far removed from the Biiccrotidm or hornbills, viz. in the 
darter {Plotus cmliinga) and the Brazilian cormorant 
{Phalacocoraxhrasilictnus). I first found the ejected stomach- 
lining from the darter, and in a short paper read at the 
meeting of the Zoological Society, February 1, 1881, 1 com- 
municated the fact. The cast epithelial lining of the 
stomach was exhibited and described by the prosector of 
the Society, Mr. Forbes. In my notice I called the atten» 
tion of other observers to this singular discovery, as I 
suspected the same might be met with in many other 
birds. I since find the cormorants have the same habit 
and power. 
REMARKS UPON THE HABITS OF THE DARTER. 
{PLOTUS ANIIINGA.) 
At a meeting of this Society, 1867 (see Proceedings of 
the Zoologiccd Soeiety, 1867, p. 142), I read a paper upon 
habits of the hornbill, and called attention to the fact 
that, from time to time, these birds cast up a substance 
that is found, upon examination, to be the epithelial 
lining of the gizzard. I now bring before the Society’s 
notice another instance of this remarkable habit, in a 
very different group of birds. A darter {Plotus anhinga), 
the bird I now speak of, was received on July 18, 1880 
and since that time has appeared to be in jyerfeet health, 
and has fed regularly. It has thrown up the lining 
of its stomach on three or four occasions during this 
period ; but unfortunately the keeper, not being aware of 
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