ON THE MOMOTID2E. 427 
70. ON THE SYSTEMATIC POSITION OF THE MOMO- 
TIDZE* 
Iy my paper on certain muscles of birds and their value in classi- Page 100. 
ficationt, I have made an error, which I desire to correct, with refer- 
ence to the systematic position of the Momotide. I there included 
them with the Coraciide as part of a single family, characterized 
among the Anomalogonate by the possession of a nude oil-gland, 
together with colic ceca. Since the time my paper appeared, I have 
had the opportunity. of dissecting several species of Momotids, thanks 
to the kindness of Mr. O. Salvin, including Momotus lessoni, M. equa- 
torialis, M. brasiliensis (a specimen which had lived im the Society’s 
Gardens), Hylomanes gularis, and Eumomota superciliaris; and I find 
that in none of these are colic ceca present. 
Farther, in Hylomanes gularis and Eumomota superciliaris I find a Page 101. 
. minute tuft on the apex of the oil-gland, although in the several 
species of Momotus there is no trace of any tuft; in fact they have lost 
it, evidently since the family was differentiated off. 
Such being the case, the Momotidze must be placed with the Pici- 
~ formes, as defined by me, instead of with the Passeriformes; and the 
amended arrangement may be thus tabulated, the Todide and Momo- 
tidz almost certainly forming a single family, as has been suggested 
by many, and which is confirmed by the observation made by Dr. 
Maurie that in the Todidx the beak is serrate.t 
ANOMALOGONATZ. 
Aves Piciformes. _ Aves Passeriformes. 
Bucerotide. ' ~ Coraciide. 
Alcedinide. Steatornithide. 
Momotide. Caprimulgide. 
Todide. Galbulide. 
Ramphastide. Meropide. 
Capitonide. Trogonide. 
Pici. Bucconide (?). 
Passeres. 
* “Proceedings of the Zoological Society,” 1878, pp. 100-2. Read, Jan. 15, 
1878. 
+ “ Proceedings of the Zoological Society,” 1874, p. 123. (Supra, p. 222.) 
I “ Proceedings of the Zoological Society,” 1872, p. 671. 
