1886. ] Geology and Paleontology. 155 
cesses of the sternum and not anterior. The evidence for this 
position rests primarily, I repeat, on the position of the bones 
observed by Dollo, and the character of the corresponding ele- 
ment in Monoclonius. 
But it may be that the bone figured by Hulke is a different 
element from that figured by Dollo, as supposed by the latter.* 
The proximal end of the scapula of Dizclonius mirabilis resem- 
bles very much that which I have figured and described as 
belonging to Hadrosaurus foulkei? excepting that it possesses a 
strong tuberosity on the anterior border (spina scapule), which is 
wanting in that species. It is represented as weak in the two 
species of Iguanodon by Dollo, and as rather strong in the same 
genus by Hulke.—Z. D. Cope. 
Corrections oF NOTES on DinocerAta.—In the NATURALIST 
for June, 1885, I gave a synopsis of the, genera of this suborder, 
which was partly based on new information derived from 
Professor Marsh’s work, then recently published. Among them 
was included the supposed genus Tetheopsis, whose character 
consisted in the absence of inferior canine and incisor teeth. The 
discovery of species presenting such a peculiarity would not 
be at all surprising in view of the reduction which the roots of 
these teeth display in some of the species, and the absence of 
superior incisors in all of them. The character on which the genus 
was predicated is figured by Professor Marsh in the skull referred 
to Tinoceras stenops Marsh, without comment in the description 
which follows. I now learn on good authority that the sym- 
physeal region in the specimen in question is entirely constructed 
of plaster of Paris. I saw the specimen, and a rather close 
examination did not reveal the line of separation between the 
plaster and the bone, which it is colored to imitate, and which is 
not indicated in either Professor Marsh's figures or description. 
The genus Tetheopsis must then be regarded as an artifact! 
I add that the basal part of a skull which I described under the 
head of Uintathertum lacustre Marsh (U. S. Geological Survey, 
Terrs., 111, p. 592) turns out to belong to a Palzosyops. The 
skull was found in a broken. condition mingled with loose frag- 
ments and teeth of the Uintatherium in such a way as to lead 
to the belief that they belonged together.—Z. D. Cope. 
DISCOVERY OF LAMELLATE THORACIC FEET IN THE PHYLLO- 
CARIDA.—In a genus of Phyllocarida, allied to Ceratiocaris, which 
is represented by a specimen from the Carboniferous beds 
Mazon creek, Illinois, kindly loaned me by Mel Carr, of 
Morris, Ill., there are plain indications of broad lamellate feet like 
the thoracic feet of Nebalia. os 
Of these limbs there are traces of four pairs. They are broad : 
l Revue des Questions Scientifiques, 1885, p: 8, top. 
ransactions American Philosophical Society, 1869, XIV, p. 92. 
