1881.] MR, IJARTLETT ON THE HABITS OF THE DARTER, 
2-17 
Bimemions. niilUm., 
Total leiigth (the tip of the tail is broken off) ...... 310 
From tip of aiiout to ear-opening 43 
„ „ tt fore limb 53 
™t . . 135 
Length of fore Hmb 72 
„ „ third fingpt 17 
„ fourth finger 19 
,j ., hind limb 9-5 
^, „ third toe 19 
„ ,j fourth toe 28 
This species is allied to E. heteroteph, E. microtepu, and E* prm- 
Habith, hwi differs from all three in the higher dorsal crest* from 
E. heterolepu in the scales of the bodj^, which are smaller (about 
42 vertically in the present species, and 29 in E. heterolepu) a«d not 
intermixed with eonical ones, and m the absence of a second lateral 
series of large scales ; from E. microfepis in the larger, slightly or 
not keeled dorsal scales ; from /:''. pfeBsfabifis in the shape of the 
dorsal scales, and especially in the strongly keeled pectoral and 
ventral ones. 
EXPLANATION OF PLATE SXTI. 
Fig, 1. Enytdim o^havffhne^i. 1 a, scutollAtiou of the nde of ditto. 
Fig, 2. SoutolltttioD of the *ide of E. 7mcrol4tpis. 
6. Kemarks upon tlie Habits of the Darter {Ploivs an- 
hinga)* By A. D. Bartlett, Superintendent of the 
Societ/s GardettB. 
[BecsivDd Jaix, 6, 1881.] 
At a meeting of this Society in 1869 (see P.Z.S. 18C9, p. 142) I read 
a paper upon the habits of tlie Ilornbilts^ and called attention to the 
fact that^ from time to time, these birds cnst up a substance that is 
found upon examination to be the epithelinl lining of the gisiaard. I 
now bring before the Society a notice of another instance of this re- 
markable habit, in a very different group of birds. A Darter (Piotus 
anhinffa)t the bird 1 now speak of, was received on the 1 8th of July 
1 880, and since that time has appeared to be in perfect health, and 
has fed regularly. It has thrown up the lining of its stowiach on 
three or four occasions during this period ; bnt unfortunately the 
keeper, not being aware of the interest that would be attached to the 
circumstance, and not knowing the nature of the substance, care- 
lessly threw the castings away. I happened, however^ to be present 
when the last sac was thrown np, and secured it for examinaHon, 
and hare banded it over to our Prosector, Mr, Forbes, for that pur- 
pose. 
This remnrbable fact being now known to occur in two widely 
