86 POMPECKJ. JURASSIC FAUNA OF CAPE FLORA. [NORW. POL. EXP. 



demonstrated 1 Cad. Tchefkini d'Orb. sp., secondly, that Cad. sublceve Sow. 

 has a narrow umbilicus similar to that of Cad. Tchefkini, and, that in 

 consequence, this observation of Newton is but of slight importance. 



The specimens of Cadoceras Tchefkini d'Orb. sp. collected by Prof. 

 Nansen are partly embedded in yellowish-gray clay, of a rusty colour through 

 weathering (PI. II. fig. 7, several impressions, and the above-mentioned frag- 

 ments of body-chambers). Most of the specimens were found loose on July 

 12th 1896, near the margin of the glacier, north west of Elmwood. One 

 fragment of a body-chamber was found at a height of ca. 550 feet, north 

 of Elmwood, and an impression of a small specimen on the talus 100 feet 

 above the sea. 



Newton's Amm. (Cadoceras) Tchefkini d'Orb. 1. c. PI. XXXIX. fig. 5, 

 was found in situ in "clay-sandstone" at Elmwood, 50 feet below the 

 basalt, consequently at a height of about 550 feet above sea-level. 



Cadoceras Nanseni n. sp. 



PI. II. figs. 13, 5, 6. Letterpress figs. 16, 17. 



1895. "Ammonite nearly resembles some of the varieties of 



A. macrocephalm". E. T. Newton ; in A. Montefiore, 

 'The Jackson-Harm sworth North Polar Expedition, 

 etc.' The Geographical Journal, London, 1895, vol. 

 VI. p. 519. 



1897. Ammonites (Macrocephaliles) macrocephalus Schloth. E. T. 



Newton; E. T. Newton and J. J. H. Teall, 1. c. 

 Quart. Journ. Geol. Soc. London, vol. 53, p. 497, 

 pi. XXXIX. figs. 1, 2. 



1897. Ammonites (Cadoceras) Tchefkini? d'Orb. E. T. Newton; E, 



T. Newton and J. J. H. Teall, 1. c. Quart. Journ 

 Geol. Soc. London, vol. 53, p. 496, c. p. pi. XXXIX. 



fig. 6. 



1 S. Nikitin, 'Rapports entre les ce'phalopodes jurassiques russes et les originaux corrcs- 

 pondants dans les collections de 1'Europe occidentale'. Bull, de la Soc. Belg. de Geo- 

 logic, etc. 1889, vol. III. p. 34. 



