302 L. F. Spath—Ammonites from Spitsbergen. 
several new forms, externally resembling such species as Nanmnites 
herberti Diener and JN. hindostanus Diener,! but with toothed 
lobes. Prosphingites austent Hyatt & Smith 2 has a similar suture- 
line, but is too involute ; on the other hand, some of the specimens 
greatly resemble the inner whorls of Prosphingites czekanowsku 
Mojsisovics,® though in this form, as also in Paranannites aspenensis 
Hyatt & Smith,* the external lobe is too complicated.’ The radial 
folds and pseudo-constrictions of some examples are pronounced ; 
other forms are quite smooth and globose, but they agree in suture- 
lines. Only one example was attached to a typical Arctoceras, but 
many small specimens came out of the matrix of a large specimen 
of A. lindstrémi (Mojsisovics) from “lowest line of nodules in 
flags, 400-450 feet above camp, Mt. Marmier”’. 
The numerous forms referred to above as gen. nov. (Danubies ?, 
Xenodiscus ?) belong to a group of which “* Dinarites”’ evolutus 
Waagen,° and Ceratites minutus Diener’ [non Dinarites minutus 
Waagen] probably are examples. The former has been compared 
with Bottnerites, and also with Xenodiscus, and some forms referred 
to the latter genus by Diener, e.g. X. cf. lissarensis Diener® and 
X. comptoni Diener,® indeed, greatly resemble the later forms. 
But the Spitsbergen Ammonites, probably, are nearly related to 
Danubites, e.g. D. hyperboreus (Mojsisovics), and to Olenekites, 
though the constrictions and coarse folds of the inner whorls some- 
what resemble the Middle Triassic Cuccoceras. Again, the notched 
periphery of some of the more involute forms has the appearance of 
that of Anasibirites ceratitoides (Waagen),!° but the suture-line of the 
whole group is very close to that of the form described as Xenaspis 
marcour by Hyatt & Smith! There is no resemblance to the Indian 
forms of Xenodiscus, with flattened periphery, in the British Museunt 
Collections, nor to the forms of Xenodiscus, recorded with Paratirolites 
and Stephanites from Djulfa by Stoyanow,!? and supposed to corre- 
spond with those of the Himalayan Hedenstremia-beds. 
On the whole, then, the group is, perhaps, closer to the Arctic 
1“ The Cephalopoda of the Lower Trias’’: loc. cit., Himalayan Fossils, 
vol. ii, pt. 1, 1897, pp. 68, 69, pl. vii, figs. 2, 3. 
2 Loe. cit., 1905, p. 72, pl. vii, figs. 1-4. 
3 Loe. cit., 1886, p. 64, pl. xv, figs. 10-12. 
“ Loe. cit., 1905, p. 81, pl. viii, figs. 1-15; pl. xxiii, figs. 1-30. 
° Prosphingites ali Arthaber (Albania, 1911, pl. xxii, fig. 6) has a similar 
external lobe, but the saddles and lobes are only about half as high in the 
Spitsbergen species. Paranannites mediterraneus Arthaber (ib., pl. xviii, 
fig. 8), on the other hand, has quite a different suture-line. 
Y 10O Ge Gilthe, UES, jo, Bi4s jal, 5c, saher, Si, 
7“ Triad. Ceph. Fauna d. Ostsibir. Kiistenprovinz’’: Mém. Com. Géol. 
St. Pétersb., vol. xiv, No. 3. 1895, p. 15, pl. ii, fig. 6. 
8 Loe. cit. (Kashmir, 1913), p. 5, pl. i, fig. 11. 
1955 105 LOS jails stig ‘thes, 7 
0 Loe. cit., 1895, p. 115, pl. vili, fig. 10. 
11 Loe. cit., 1903, p. 116, pl. vii, figs. 26-38. \ 
12°“"On the Character of the Boundary of Paleozoic and Mesozoic near 
Djulfa’”’: Verh. Russ.-Kais. Min. Ges., ser. 1, vel. xlvii, 1909, pp. 86, 87. 
