Notices of Memoirs — MM. Hehert ^ Munier-Chalmas. 165 



"I have named it Penceus Sharpn, after Mr. Samuel Sharp, F.S.A., 

 F.G.S., who is the discoverer of the fossil." 



My present object in again calling attention to this specimen is to 

 correct an error made in 1868, when I described it as from "the 

 Loiver Lias " — the fact being, as pointed out by my friend Mr. Sharp, 

 that it occurs in the very top zone of the Upper Lias at Kingsthorpe, 

 in a bed in which Ammonites serpentinus, A. communis, and A. hifrons, 

 are abundant. 



This important correction also enables me to avail myself of the 

 two carefully drawn views of Penceus Sharpii by my friend Miss 

 Edith Jeyes, to whom I desire to express my best thanks. 



The specimen, together with a fine series of Northamptonshire 

 and Lincolnshire Fossils, from Mr. S. Sharp's Museum, now form a 

 part of the National Collection. 



3SrOTIO:ES OIF- IMIiElVnOII^S. 



" Eecherches stir les terrains tertiaires de l'Europe mekidio- 

 NALE." Par MM. Hebert et Munier-Chalmas. (Comptes 

 Rendus des Seances de I'Academie des Sciences, tom. Ixxsv.) 



A DIFFERENCE of opinion between M. Bayan and M. Hebert 

 with respect to the relative position of the lower Eocene beds 

 of Rouen and San-Giovanni Ilarione, led the latter observer to 

 undertake a personal survey of the district of Vicenza. Accordingly, 

 in company with M. Munier-Chalmas, who carried on the palseonto- 

 logical portion of work, he not only paid a visit to that locality, but 

 extended his observations to the Tertiary beds of Hungary. The 

 results of these researches are embodied in the paper, or rather series 

 of papers, now before us. The authors first visited Hungary, and 

 there, aided by Herr Max von Hantken, the Director of the Hun- 

 garian Geological Institute, they made a careful examination of the 

 Tertiary strata. These they describe with some minuteness, and 

 come to the conclusion that the Nummulitic deposits all belong to 

 the Middle and Upper Eocene, are divisible into five well-marked 

 zones, of which four are characterized by different species of Num- 

 mulites ; whilst the Lower Miocene is represented by two beds, 

 respectively characterized, as in the Paris Basin, by Cyrena convexa 

 and Pectunculus obovatus. 



Proceeding to Yicenza, a parallel series of deposits was made out, 

 which are described with the same exactitude as the others. The 

 volcanic rocks of this district, held by many to be contemporaneous, 

 are considered by the authors to belong to a later period ; and the 

 intercalation, so often cited, of basalts with the beds of limestone, they 

 maintain is merely apparent. No notice, therefore, is taken of them. 



M. Hebert's opinions concerning the synchronism of these two 

 series of deposits with each other, and those of the Paris Basin, to- 

 gether with the various zones into which they are divided, will be 

 best seen by referring to the table appended to the paper, which is 

 here reproduced for the convenience of our readers. (See p. 166.) 



B. B. W. 



