FAUNA OF SOUTH GERMANY AND THE COTE D'OR. 103 



ciated with Cal. rarieostatum, and therefore, according to our classification, are in 

 the Lower Lias. Oxyn. Oppeli and numismale survived in the Middle Lias of 

 Germany, Oxyn. Oppeli alone in the basin of the Rhone, and Oxyn. numismale 

 alone, in England. 



Fauna of South Germany. — Table I. 



The notable facts brought out by this table are the following. The abundance 

 and concentration of schlotheimian forms in the Angulatus zone, and their early 

 appearance in the Rhaetic. The completeness of the Caloceran series in the 

 lower horizons, and the poverty of the faunas existing between the Geometricus 

 or Upper Bucklandi beds and the Raricostatus bed in respect to these series, and 

 also in the vermiceran, arnioceran, and coroniceran series. The asteroceran series 

 reached a high stage of development as regards the number of forms, but is not 

 represented by the extreme modifications noticeable in the basin of the Rhone. 

 The oxynoticeran series is also present, and even passes into the Middle Lias, but 

 has not a full representation of species. 



Fauna of the Cote d'Or. — Table II. ' 



The Ammonites at Semur were named by M. Reynes, and these names have 

 come into circulation through publication by M. Collenot in his " Description 

 Geologique de l'Auxois," and have also been quoted by Zittel and several other 

 authors. Reynes considers many well-marked varieties to be distinct species. 

 This is our principal disagreement with this author, and the following notes, 

 together with the descriptions of species and table, sufficiently explain other 

 differences of opinion. 



Terquem's figures of Hetiangensis 1 show a keeled, broad caloceran form with 

 pilse in the young, which belongs somewhere between Cal. laqueum and rarieosta- 

 tum. The specimens in the Museum at Semur, identified as Hetiangensis by 

 Reynes, do not agree with these figures. The specimens identified as Delmasi 

 belong to several species, and one of these is so exactly like Pirondi, as figured 

 by Reynes in his unpublished plates, that I have quoted this name as a synonym 

 for Johnstoni in the table. 



With regard to the vermiceran series, we traced the relations as follows. 

 Beginning with spiratissimum, the forms appear to grade into Schloenbachi, which 

 represents Conybeari in the Scipionis bed, then into rotator, which is a close ally, if 

 not identical with Amm. caprotinus, D'Orb., and also with the spinous varieties of 

 Conybeari found in Germany. The simpler ribbed forms grade into cony bear oides, 

 Rey., which is not very far removed from spiratissimum, thence into true Conybeari, 

 and thence into Breoni, which last is a stouter and more robust form. Breoni, 

 Rey., exactly agrees with typical Conybeari, and also with German forms of the 

 same name, whereas Conybeari, Rey., is equal to our Bonnardi. Bochardi, Rey., has 

 the form and characters of Conybeari during its earlier and adolescent stages, but 



1 Pal. Lias, de Luxem., etc., Mem. Geol. Soe. France, V., pi. xiii. fig. 1, a, b. 



