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276 - Scientific Intelligence. 
inches long, and a portion of a tibia or leg-bone, which when perfect 
must have been between four and five feet long. : 
18. Notice of what appears to be the Embryo of an Ichthyosaurus in 
the Pelvic cavity of Ichthyosawrus (communis ?) by J. Cuanine Pearce, 
(Ann. Mag. Nat. Hist., vol. xvii, pp. 44, 45, 46.)—In developing an 
ichthyosaurus which { took up from the rock in the brown laminated 
lias clay of Somersetshire, and having reversed the animal so as to 
lay bare that surface which was downwards in the quarry, I removed 
the clay with great care and exposed to view an Ichthyosawrus.commu- 
nis? about eight and a half feet long, lying on its back in the highest 
state of preservation, and with the exception of a slight dislocation in 
the middle of the tail and the deficiency of its point, every part is most — 
perfectly preserved. In cautiously lifting the laminze of clay between 
‘the two hinder paddles, my attention was first arrested by a series of 
. small vertebra lying on three or four of the posterior ribs ; on remov- 
ing another portion of the clay, ribs, the rami of the jaw, and the other 
parts of the head were visible. In carefully cleaning this delicate little 
skeleton, it was found to rest on black, finely corrugated integument, 
which is preserved around the small skeleton, and passes underneath 
the posterior ribs and some other parts of the large animal. 
The little animal, somewhat dislocated, lies at full length in the cavity 
of the pelvis, with its head towards the tail of the large one, and rests 
on the internal surface of its integument, and on the internal surfaces 
of three of its posterior left ribs, and is about five and a half inches 
long. The rami of the jaw and one of the longest ribs (of which only 
five or six are discernible) are each about an inch long; and of the 
thirty vertebree which can be counted, the largest is the eighth of an 
inch in its longest diameter. It is bounded on either side by the ilium, 
ischium and pubis, and by the right and left posterior paddles, and on 
the right side by the vertebral column and right ribs; and while the 
posterior two-thirds of the little animal is within the pelvis, the head 
appears to protrude beyond it, and apparently in the act of being ex- 
pelled at the time of death. 
So singular a circumstance as an embryo being found in the pelvis 
of its parent in a fossil state, should Jead to the greatest care in arriving 
at such a conclusion; but when we consider that the large animal was 
developed on its under surface—consequently it is nothing that has 
fallen upon it—and the remarkably correct position of the little skele- 
ton in the pelvis, between the right and left ribs, with its head protrud- 
ing, and the little vertebrae so exactly corresponding in shape to the 
large ones, and the other bones resembling those of a saurian, it ap- 
pears fair to conclude. that it cannot be anything else but a foetal ichthy- 
‘osaurus ; and if it be suggested that it may have been swallowed by 
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