76 POMPECKJ. JURASSIC FAUNA OF CAPE FLORA [norw. pol. exp. 



the small forms, which he designates Amm. Kdnigii Sow., Quenstedti states 

 that it may perhaps be a young form of his Amm. subloevis (under which 

 name several Cadoceras species are comprised, but none of them identical 

 with Amm. subloevis Sow.) These small ammonites, however, are neither 

 young forms of the species comprised in Amm. subloevis Quenst. nor do 

 they belong to the genus Cadoceras at all. They belong to the specimens 

 designated by Quenstedt as Amm. Konigii Sow.^, and are probably identical 

 with the species described by Morris and Lycett ^ as a young form of Amm. 

 subcontractus Morr. a. Lycett. These are forms with peculiar, irregularly 

 divided ribs, and much undulated on the outside, which have to some extent 

 very distinct parabolic lines and nodes. From their form, sculpturing and 

 lobe-line, these ammonites — together with an undescribed species now before 

 me from Lower Bavaria — cannot be designated as Cadocerates; they ought 

 rather to be regarded as a new, hitherto not particulary characterised group 

 of the Stephanoceratidac. 



The very sensible deficiency in the ammonite literature, in the present 

 case was fortunately, to some extent, made up by the rich treasures of the 

 Munich Museum. I succeeded in obtaining the innermost whorls of, in some 

 cases very early stages of a large number of species: 

 Cadoceras subloeve Quenst. sp. (now Sow. sp.) — from the Suabian Jura. 



„ Tchefkini d'Orb sp. 



Mila^chewici Nik. 

 Elatmae Nik. 

 Frearsi (d'Orb) Nik. 



from the Russian Jura, 



„ subloeve Sow. sp. 1 



„ modiolare d'Orb sp. / ^™™ *' ^"^^^^^ J'^'"^- 



Only by the help of this material was it possible to determine the Ca- 

 docerates from Franz Josef Land that I have before me. At the same time. 



* F. A. Quenstedt, 'Ammoniten des Sctiwabisclien Jura.' p. 674, pi. 72, figs 9—15, especi- 

 ally fig. 10. 



2 F. A. Quenstedt, 1. c. pi. 87, figs. 31, 32—7. I Sierairadzki (0 mieczakach glowonogich 

 brunatnego jura W. Popielanach, etc. Cracow, 1889, p. 6.) designates both these pieces 

 as Quenstedtoceras carinahim Eichw. sp. Form, sculpturing and lobe-line absolutely 

 preclude the possibility of regarding these specimens as juvenile forms of Eichwald's 

 Amm. carinatus. 



8 Morris and Lycett, 'IVIonograph of the Mollusca from the Great Oolite,' p. 11, pi. IL 

 fig. 2. 



