J. H. Cooke — Globigerina Limestones of Malta. 509 



portion of H, have a composition of from 70 to 90 per cent, of 

 calcium carbonate, and are made up for the most part of shallow- 

 water organisms. These limestones, together with the underlying 

 transition bed and the upper portion of the Lower Coralline Lime- 

 stone, were laid down on a sinking sea-floor and in about 300 

 fathoms of water. 



II. The subdivisions D, E, F, G, and the upper portion of H, are 

 composed of from 80 to 90 per cent, of calcium carbonate, the 

 greater portion of which consists of Globigerina and other pelagic 

 organisms. These were probably deposited in about 1000 fathoms. 



III. The subdivisions A, B, and G contain from 50 to 70 

 per cent, of lime. These, together with the overlying " Marls," 

 are considered by Dr. John Murray to have been laid down on 

 a rising sea-floor and to have been within the influence of river 

 waters and their detrital products. They were probably laid down 

 in about 800 fathoms. 



The following is a list of the fossils of the formation, about 

 one-half of which are new to the palaeontology of the Maltese 

 Miocene, and many are new to science. 



Palceontology. — The figures 1, 2, 3 placed after the names of the 

 fossils indicate the occurrence of the fossils in the three sections 

 referred to in the conclusion. 



Mammalia : 



Camivora — ■ Sirenia l — Cetacea — 



Phoca rugosidens, Owen, PHalicore, 1,3. Zeuglodon, 3. 



1, 2. Halitlierium, 1, 2, 3. Delphinus, 1, 2, 3. 



P. Scillse*, Capellini, 1. PManatus, 1, 2, 3. Cetacea (gen. ?), 1, 2, 3. 



Reptilia — 



? Ichthyosaurus gaudensis, Hulke, 3. Crocodilus gaudensis, Hulke, 1, 3. 



Tomistoma champsoides, Lyd., 1, 3. Tryonx Melitensis, Lyd., 3. 



Pisces — 



Stereodon Melitensis, Owen, 1,2. Sphrerodus, 3. 



Notidanus primigenius, L. Ag., 1, 2, 3. Sphenodus, 3. 



Platax Woodwardi, L. Ag., 1. Hemipristis serra, L. Ag., 1, 2, 3. 



Oxyrhina xiphodon, L. Ag., 1, 2, 3. H. paucidens, P. Gerv., 2, 3. 



O. hastilis, L. Ag., 1, 2, 3. Lamnidae, 1, 2, 3. 



Carcharodon megalodon, L. Ag.,1,2, 3. Diodon Scilhie, L. Ag., 2. 



Carcharias, 1, 2, 3. iEtobates, 3. 



Holocentrum Melitense, A. S. "Woodw. Chrysophrys, 1, 2, 3. 



Odontaspis Hopei, L. Ag., 1, 2, 3. Scyliidse, 1, 2, 3. 



Mollusca: (1) Cephalopoda — Aturia aturii, Basterot, 3. Nautilus, sp. ? 2, 3. 



(2) Pteropoda — 



Vaginella depressa, Daudin, 1, 2, 3. Hyalea taurinensis, Sisra., 1. 



Cavolina Cookei, Sinionelli, 2. H., sp., 1, 2, 3. 



(3) Gasteropoda^— 



Conus Melitensis, De Greg., 2, 3. Conus Russigeri, Haues, 1, 2, 3. 



C. Mercati, Brocchi, 2, 3. C. betulinoid.es, Lamarck, 1, 2, 3. 



C. dubius, Gulia, 1,3.. C. (casts indet.), 3. 



C. Melitosiculus, De Greg., 3. Dolichotoma cataphracta, Brocc, 3. 



C. Ruschi, Michelotti, 1, 2, 3. D. ramosa, Brocc, 3. 



1 Most probably all the Sirenian remains found in Malta are referable to the 

 genus Kalitherium. — Edit. Geol. Mag. 



