Note on two Skulls from the Wealden and Purbeck Formations indicating a new Subgroup of Crocodilia

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Abstract
A n examination of the crocodilian skull exhibited last session by Mr. Willett, and of an undescribed skull in the British Museum, No. 41,098*, has brought to light a peculiarity in the posterior nares which, so far as I am aware, had been previously recognized only in the small crocodilian skull from Brook, Isle of Wight, in the Jermyn Street Museum, described by Prof. Huxley in a paper communicated to this Society on 28th April, 1875, and figured in the Quart. Journ. Geol. Soc. vol. xxxi. pl. xix. fig. 3. This, and the great probability of the correctness of Mr. Willett's reference of his acquisition to Goniopholis crassidens , the skull of which was before quite unknown, have seemed to me to invest these skulls with sufficient interest to warrant me in offering a short account of them to the Fellows. I. Mr. Willett's Crocodilian Skull (Goniopholis crassidens, Owen ?). (P1. XV. figs. 1 & 2.) Viewed from above, the outline of this skull has the form of a slender isosceles triangle, the base of which, taken between the extreme outer posterior angles of the quadrate bones, measures about 13 inches, and the nearly straight sides from the same points to the premaxillary suture 25 inches. The uniform convergence of the sides is broken by a slight inbend in front of the orbits, by a small outbend at the 6th, 7th, and 8th maxillary teeth, reckoned from before backwards, and by the abrupt expansion of the præmaxillæ occasioning a deep lateraI notch

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