PART 4.] 
Waagen : Ammonite-fauna of Kufch. 
93 
Stephanocercts Polyphemus, Waagen, n. sp. This species grows enormously large, 
1 2 feetin diameter, and seems identical with d’Orbigny’s drawing of St. tumidum (Orb. non 
Hein.). It differs from the real St. tumidum by very broad rounded ribs and a smooth body- 
chamber, while Reinecke’s species has fine sharp ribs and a plicated body-chamber. 
Stephanoceras Chareeense, Waagen, n. sp. Allied to St. Morrisi, Opp., but much 
broader near the umbilicus and with a very narrow siplional side, on account of which the 
transversal section of the whorl is nearly triangular. There are also some differences in the 
sutures. 
Stephanoceras arenosum, Waagen, n. sp. Of a very flat lenticular form, with faint, 
broad rounded ribs somewhat resembling St. Lalandeanum, Orb., but the ribs are not un¬ 
divided, and only few of them reach to the umbilical margin. The lobes are also quite 
different. 
The second group includes the following species: 
Stephanoceras dimerum, Waagen, n. sp. (golden oolite, Keera hill; gray marl rock, 
Jumara; sandy iron rock, Kaora ; doubtful, Jooria). 
„ suhtrapezinmn , Waagen, n. sp. (golden oolite, Keera bill). 
„ eucyclum, Waagen, n. sp. (brown oolite, Keera hill, Jooria hills). 
„ opts, Sow. (iron nodules, Keera hill; brown oolite, Jooria; oolite, 
Dhosa). 
„ fissum, Sow. (red iron rock, Kuntkote ; brown oolite, Lodai, Jooria ; 
oolite, Dhosa; iron nodule, Keera hill). 
„ Nepalense, Gray (red iron rock, Kuntkote; brown sandstone, 
Trammo river), 
Stephanoceras dimerum, Waagen, n. sp. Allied to St. Herveyi , Sow., hut with smaller 
umbilicus and with the ribs curved in front on the siphonal side. The ribs are broad and 
prominent; the general shape of the specimens somewhat globular. Body-chamber with 
strongly curved, high, lamellose ribs. The species attains scarcely more than a diameter 
of 50-60 m m. 
Stephanoceras suhtrapezinmn, Waagen, n. sp., very much like the preceding species, 
but with much finer ribs, and with flattened sides of the whorls; the aperture having 
a somewhat trapezoidal shape and the form of the whole shell being more lenticular. It 
attains a little larger size than the preceding species. 
Stephanoceras eucyclum, Waagen, n. sp. Full grown specimens with preserved body- 
chamber have a slight resemblance to similarly preserved specimens of Cosmoeeras ornatum 
or Duncani, but the examination of the inner whorls shows that the species belongs to 
Stephanoceras. The umbilicus is very wide, the whorls a little compressed, and covered with 
polytome fine ribs; the lobes are very short and broad. 
The last group of Stephanoceras is that of Steph. modiolare, Luid., only represented 
in Kutch by a single species. 
Stephanoceras diadem at um, Waagen n. sp. (golden oolite : Keera hill). 
Stephanoceras diadematum, Waagen, n. sp. The species attains nearly one foot in 
diameter. Full grown specimens are entirely smooth, and closely resemble large individuals 
of St. modiolare, Luid., except that the umbilicus is always wider; small specimens, how¬ 
ever, are entirely different, as they never have the “ Lamherti-like’' shape, which characterises 
young individuals of the last mentioned species. St. diadematum has always very broad, 
depressed whorls, which are covered in the first youth with diohotomo ribs becoming after¬ 
wards polytome, and passing with a slight curvature in front over the flat siphonal side; 
the lateral lobes are situated on this latter portion of the shell. 
