28 Oti some Jurassic MoUusca from Arabia, 



Madagascae. 



Lemoine, p. :6tude9 G^ologiques dans le iiord de Madagascar, 1906, 



pp. 146, 147. 8vo, Paris. 

 Newton, R. B. Notes on Fossils frona Madagascar &c. Quart. 



Journ. Geol. Soc. 1889, vol. xlv. p. 334. 

 . On a Collection of Fossils from Madagascar obtained by the 



Ptev. R. Baron. Quart. Journ. Geol. Soc. 1895, vol. li. pis. ii. & 



iii. pp. 72-82. [Contains list of all the recognized fossils from 



Madagascar.] 



EXPLANATION OF THE PLATES. 



Plate I. 



ParaUelodo7i e(jertonianus, Stoliczka, sp. (Page 5.) 



Fig. 1. External lateral view of a left valve. 



Fig. 2. Interior of the left valve of another specimen, showing partial 



dental characters. 

 Fig. 3. Magnified view of external surface-structui-e. 

 Fig. 4. Dorsal aspect of a smaller specimen with both valves. 



Nucnla cuneiformis, J. de C. Sowerby. (P. 7.) 



Fig. 5. Dorsal view of specimen with both valves. 



Fig. 6. Internal section of another specimen with both valves, showing 



dentition. 

 Fig, 7. Posterior end of another form with both valves, showing the 



wide lunule, X 2. 



Troclms arabiensis, sp. n. (P. 8.) 



Figs. 8, 9. Views of separate specimens, fig. 9 being more inflated at 

 the base. 



Nerincea cf. desvoidgi, Orbigny. (P. 9.) 

 Fig. 10. Natural cast, showing the median excavation of the whorls. 



Plate II. 



Fig. 1. Beleinnites ci. Aaste^?^*, Blaiuville. 1 a, ventral aspect, exhibiting 

 the naiTow ventral groove, widening out and becoming shal- 

 lower at the posterior end ; 1 b, view of anterior end of the 

 same ttpecimen ; 1 c, view of posterior end of the same. The 

 specimen is labelled " Nobat.'" (P. 19.) 



Fig. 2. Nautilus cf. hexagoniis, J. de C. Sowerby. Lateral aspect, 

 showing subangular margin of periphery and the growth-lines 

 of the test. Near the villages of Al-Kura and Samma, 

 1.5 miles N.E. of Dihala. (P. 11.) 



Fig. 3. Ferisphinvtes cf. subdulus, F. Foutannes. Lateral aspect of 

 specimen, the inner whorls of which are obscured by matrix. 

 Near the Aillagt's of Al-Kura and Samma, 15 miles N.E. of 

 Dihala. (P. 17.) 



