Yol. 51.] MR. E. B. NEWTON ON EOSSILS FEOM MADAGASCAR. 75 



Orbitoidcs (like) papyracea, Boubee. 

 Triloculina (like) trigonula, d'Orbigny. 

 Ostrea pelecydion, Fischer, 



like 0. Villei, Coquand, or Pertia Mulleti, Deshayes. 

 Ostrea Grandidieri, Fischer. 

 Neritina Schmideliana, Chemnitz. 

 Terebellmn (like) obtusum, J. de C. Sowerby. 



In 1872 M. Grandidier 1 noticed the enormous development of 

 Jurassic rocks in Madagascar (overlain in parts by a narrow band 

 of Nummulitic limestone containing Neritina Schmideliana, Alveo- 

 lina, etc.), which was stated to extend from the southern border of 

 the Bay of Narrinda to the western slope of the granitic mountains 

 protecting Fort Dauphin (south-east corner). 



Fischer 2 described another series of fossils in 1873, collected by 

 M. Grandidier from the Jurassic rocks of Tullear and Morundava 

 in the south-western portion of the island. His determinations and 

 horizons were as follows : — 



Nerincea leiogyra, Fischer. 



Natica (near to) Clio, d'Orb. [Oxfordian]. 



„ „ canaliculate/,, Morris & Lycett [Great Oolite]. 



„ dubia, Homer [Kimeridge]. 

 Solarium (near to) polygonum, d Archiac [Great Oolite]. 

 Trochus (near to) Ibbetsoni, Morris [Great Oolite]. 

 Cerithium eribote, d'Orb. [Oxfordian]. 



„ (like) russiense, d'Orb. [Oxfordian]. 

 Alaria, sp. 



Ehyncholites (like) gigantea, d'Orb. [Oxfordian]. 

 Ammonites fimbriatus, J. Sowerby [Lias]. 



,, (group) heierophyllus, J. Sowerby [Lias]. 

 „ „ Parkinsoni, J. Sowerby [Inferior Oolite]. 



Astarte excavata, J. Sowerby [Inferior Oolite]. 



,, (group) depressa, Mimster [Oxfordian]. 



„ „ minima, Phillips [Great Oolite]. 



„ „ phyllis, d'Orb. [Oxfordian]. 



„ ,, alta, Goldfuss [Lias]. 



Rhynchonella tetrahedra, J. Sowerby [Lias and Inferior Oolite]. 

 ,, concinna, J. Sowerby [Great Oolite]. 



M. de Fromentel determined the corals as : — 



Montlivaltia trochoides, M.-Edw. & Haime [Inferior Oolite]. 

 Epismilia Grandidieri, n. sp. 1 [No horizons given, 

 Isastrma Fischer i, n. sp. J but probably Lias]. 



In 1877 the Rev. J. Richardson, 3 of the London Missionary 

 Society, published details of his journey through the southern dis- 

 tricts of Madagascar. In the vicinity of Aborano he collected some 

 well-preserved Secondary fossils of Jurassic age [wrongly referred to 

 the Neocomian by the Rev. James Sibree *], which were figured, to 



1 'Madagascar,' Bull. Soc. Geogr. ser. 6, vol. iii. (1872) p. 369. 



2 ' Sur le terrain jurassique de Madagascar,' Comptes-rendus Acad. Sci. 

 Paris, vol. lxxvi. (1873) p. Ill (no figures given). 



3 ' Lights and Shadows : or Chequered Experiences among some of the 

 Heathen Tribes of Madagascar,' 1877. Plate [fossils] and route-map [Antana- 

 narivo]. 8vo. The fossils are referred to on pp. 38 and 68. 



4 ' Observations on the Physical Geography and Geology of Madagascar,' 

 ' Nature,' vol. xx. (1879) pp. 368-372. 



