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2. DEscRIPTION OF A NEw Species or Momorus. 
By Joun Govuxp, F.R.S. Etc. 
Mr. Gould exhibited a species of Momotus, which he had had in 
his collection for many years, and which he believed to be entirely 
new to science. It is most nearly allied to the Momotus Mewicanus, 
but differs from that species in its much larger size, in the deeper 
chestnut-colour of the head, and in having a greyish-white mark 
under the eye, in lieu of the rich blue one observable in M. Mevwica- 
nus. These differences induce Mr. Gould to consider it to be distinct ; 
in which opinion he was greatly confirmed by finding other examples, 
precisely similar in colour, in the fine collection of the late Earl of 
Derby, now in Liverpool. He therefore proposed for it the name of 
Momorus CASTANEICEPS. 
Crown of the head very deep chestnut, gradually blending on the 
back of the neck into the reddish grass-green of the back and wing- 
coverts ; primaries and secondaries bluish green on the external web 
and next the shaft on the internal web, the remainder of the feathers 
being brownish-black, largely margined with buffy-yellow at the base, 
and with black shafts; upper tail-coverts and tail bluish-green, the 
latter with black shafts, and the spatulate terminations of the two 
centre feathers largely tipped with black ; lores and lengthened ear- 
coverts black, the latter bounded above by a narrow line of blue; 
beneath the eye a narrow streak of greyish-white, bounded above by 
a finer streak of blue; under surface very pale green, becoming of a 
still paler and more buffy hue on the vent; on the centre of the 
breast a few lanceolate pendent feathers of a deep velvety black, 
narrowly bordered with pale blue; bill black ; feet brownish-black. 
Total length, 153 inches; bill, 2; wing, 54; tail, 82; tarsi, 11. 
Hab. Guatemala. 
3. On THE ANATOMY OF THE GREAT ANTEATER 
(MyRMECOPHAGA JUBATA). 
By Proressor Owen, F.R.S., V.P.Z.S. 
Professor Owen read a paper on the Anatomy of the Great Ant- 
eater (Myrmecophaga jubata). The animal dissected was a full- 
grown female ; it was received at the Gardens September 29, 1853, 
and died July 6, 1854. It weighed 62lbs.; the weight of the brain 
was 30z. avoir. The nipples were two in number, post-pectoral in 
position ; the vulva and vent opened by a common cloacal aperture. 
The integument was thick ; well-developed dermal muscles attached 
it to parts of the skeleton: the extent and attachments of these were 
described. The position of the viscera on opening the abdominal 
cavity was detailed. The intestinal canal is supported by one broad 
fold of peritoneum, as in reptiles. A long narrow continuous gland 
extends along the base line of the mesenteric part of the fold, and a 
parallel series of detached glands along the mesocolic part. Other 
