Geological Society of London. 37 



He next treated of the so-called Saliferous beds of the district, 

 and gives his reasons for regarding them as later in age than the 

 J^n^o}^^a-sandstones above alluded to, and therefore not equivalent 

 to that part of the series named " Wood-beds " by Dr. Atherstone. 



Other researches of the author related to the Tertiary beds both 

 inland and on the coast. He distinguished three zones on the coast 

 later in date than the high-level shell limestones (Pliocene ?) of the 

 Grass Eidge and other parts of the interior. One of the coast-zones 

 he named the Alcera-hedi, from the prevalence of a delicate species of 

 that genus. Another zone was described as following the river- 

 valleys in the form of raised terraces, characterized by the presence 

 of a large Panopcea. The latest shell -banks have been thought to 

 be Kitchen-middens, but the author regarded them as shore-deposits 

 in place. The author concluded by tracing the probable climatal 

 and geographical changes in this region during geological times, and 

 indicated, as far as his material allows, the probable migrations of 

 the MoUusca, especially of the Venericardia characterizing the 

 Pliocene Limestone. 



DiscTTssioN. — Mr. Gwyn Jeffreys remarked tliat all the shells belonging to the 

 genus Akera which he had examined were shallow water or littoral shells. 



Dr. Duncan remarked on one of the corals as being of a well-known Crag form, 

 the Balanophyllia calyculus. 



Mr. Searles Wood, Jun., observed that there appeared some probability on the 

 face of the paper of the shells of the older Post-tertiary beds denoting a warmer 

 climate than the present, instead of, as here, a colder. 



2. "Note on some Eeptilian Fossils from Grozo." By J. W. 

 Hulke, Esq., F.E.S., F.G.S. 



The author described the remains of two reptiles said to have 

 been brought from Gozo by the late Captain Strickland. One of 

 them was a fragment of the symphysial part of the slender mandible 

 of an Ichthyosaurus; having teeth of precisely the same character as 

 those of the form from the Kimmeridge Clay described by the 

 author under the name of Enthehiodon. For this species the name 

 of Ichthyosatirus gaudensis was proposed. The other was the skull 

 of a species of Crocodile, for which the author proposed the name 

 C. gaudensis. 



Discussion. — Dr. Duncan suggested that the Ichthyosauri an fossil might be deri- 

 vative from some Secondary rock. He mentioned that Dr. Leith Adams had once 

 sent him an Aspidiscus crista tus from the Hippurite Limestone, which was stated to 

 have come from Malta. To account for this, he suggested that the Miocene of Malta 

 might have been supported on beds of Cretaceous age, so fossils from that source 

 might have become imbedded in the coral reefs of the later date. 



Capt. Spratt expressed a doubt of the fossil having really come from Gozo. He 

 did not recognize the Cretaceous-looking matrix among any of the rocks of that 

 island, with all of which he was acquainted. The nearest approach to that kind of 

 rock was to be found in the lowest of the deposits near Cairo, which were probably 

 Eocene. 



Prof. T. Rupert Jones suggested an examination of the Foraminifera in the matrix, 

 with the view of determining its Secondary or Tertiary age. He mentioned the oc- 

 currence of rolled nodules of older rocks in beds of later age at Gozo. 



Mr. Busk stated that a S'tone of similar character to the matrix occurred in Malta, 

 if not in Gozo, but probably in both. 



Mr. Hulke, in reply, observed that he had in this paper intentionally left the 

 stratigraphical part of the question untouched, and confined himself to the palreonto- 

 logical aspect of the remains. 



