298 8. S. Buchman — Jurassic Ammonites. 



enlarging whorls, much deeper and narrower umbilicus, direction 

 of the flattening of the tubercles, acutely elliptical form of the trans- 

 verse section of the whorls, and forward instead of backward wave 

 of the edge of the septa at the middle of the periphery." We have 

 examined J. Sowerby's type of Nautilus tuberculatus, which is in the 

 British Museum (Nat. Hist.), and have no doubt that it is specifically 

 distinct from M'Coy's species. 



De Koninck,^ in describing the present species from Yise, Belgium, 

 compares it with N. liangulatus, J. de C. Sowerby [?= Coelonautibis 

 cariniferus, J. de C. Sowerby], and with Nautilus tuberculatus, J. 

 Sowerby, and Nautilus latus, Meek and Worthen. He distinguishes 

 M'Coy's species from Sowerby's and Meek and Worthen's by its 

 smaller size, the greater relative height of its aperture, the depth 

 of its umbilicus, and the form of its septa. As far as can be judged 

 by the figures there seems much to justify de Koninck's identifica- 

 tion of the Vise fossil with Temnocheilus coronatus ; and Mr. Garwood 

 in a letter to one of the writers expresses the same view, he having 

 seen the specimens in the Natural History Museum at Brussels last 

 autumn. 



There is a small but well-preserved specimen in the Woodwardian 

 Museum, Cambridge, from the Carboniferous Limestone, Settle, 

 Yorkshire, which we think belongs also to this species. 



Finally, our best thanks are due to Mr. W. W. Watts, of the Geo- 

 logical Survey, through whom we obtained access to Mr. Garwood's 

 specimens, and to Prof. Hughes and his assistants, Messrs. Woods 

 and Eeed, for their kindness in allowing one of us to examine M'Coy's 

 types in the Woodwardian Museum, Cambridge. 



IV. — Jurassic Ammonites : Notes on a Pamphlet by Professor 

 GuiDO Bonarelli.^ 



By S. S. BucKMAN, F.G.S. 



ITALIAN geologists have made several valuable contributions 

 to our knowledge of the Jurassic strata of their country. 

 Unfortunately some of their works are not known here as they 

 deserve to be, and seem difBcult to obtain. At the same time I 

 have to acknowledge with thanks the receipt of some valuable 

 memoirs which have been of particular service ; and one of the 

 latest arrivals is the present pamphlet. 



This memoir deals with what has usually been called "Upper 

 Lias " and " Lower Inferior Oolite " ; but these terms the author 

 proposes to replace by "Toarcian" and "Aalenian." He deals, first, 

 with the palaeontology, and mentions various well-known species, 

 some of which we are familiar with in this country, but others are 

 peculiar to the districts adjacent to the Mediterranean. In this con- 

 nection it may be noted that Hammatoceras in a great measure, and 



^ Faime du Calcaire Carbonifere de la Belgique (Annales du Mus. Roy. d'Hist. 

 nat. de Belgique, vol. ii.), part i. 1878, p. 115, pi. xxiv. ff. 2a, b. 



^ Osservazioni sul Toarciano e I'Aleniano dell' Apennino centrale. Boll. d. Soc. 

 geol. italiana, vol. xii. fasc. 2, pp. 195-254. Borne, 1893. 



