ialontolngia ndita,

FAUNA OF KACHH (CUTCH). 235
·compressed form of the transiens group, described below. The measurements
-of these examples compare as follows :-
Lectotype (Waagen's pi. XXVIII, fig. 1).
1 Paratype I (Waagen, p. ll4)
, II (Waagen, p. ll4)
PI. XXVI, figs. 4a, b (transitional to E. axonoides) •
PI. XXXIV, fig. I
210
172
48
133
75
•
50
•47
•48
•48
•48
•38 •16
•46 •16
•42 • 17
•43 •17
•44 •19
As in the proportions, there is considerable variability in the ribbing, but this
is always distinctly projected peripherally, much more markedly than in E.
polyphemus. Of the other species described below, E. axonoides with increased
whorl-thickness is transitional to E. stibtumidus and also has coarser costation.
The compressed E. transiens, as Waagen already pointed out, is distinguished
by its more numerous and finer ribs, a smaller umbilicus, and a less strongly
curved suture-line. E. palmarum G. Bohm sp. (1907, p. 90, pi. XXI, figs.
2a, b) differs in its wider umbilicus and indistinct costation ; but E. stiblemoini,
nov. (=Macrocephalites palman.tm G. Bohm, 1907, pars, pl. XXII, fig. 4
only) is intermediate between that species and the present form.
Macrocephalites waageni Uhlig (1910, non M. waageni Kruizinga, 1926, p. 61)
and M. kitchini which
had been associated with the present species by Uhlig
and Lemoine may not be so closely allied as seems at first sight.
The sutureline
of the latter species has projected umbilical elements but its external
saddle and the presence of only two laterals suggest affinity with true
Macrocephalitids rather than Epimayaites ; and Grayiceras also (to which I
tentatively referred the Spiti
forms in ignorance of the lobes) has a different
·suture-line. The Madagascar form recorded by Lemoine as ' Macrocephalites '
maya was almost certainly misidentifi.ed.
Tornquist's 'M.' panganensis, described
by its author as in some respects transitional between 'M.' maya and 'M.'
polyphemus, is not closely related to the present species.
Horizon.-.Argovian (Kantcote Sandstone) .
Localities.-Waagen recorded this species from Kantcote and the two speci­
.mens here figured as well as an additional example (No. 304) in the Blake
Collection came from the river bed to the west of the same locality. One
specimen in the same collection (No. 320) is from the Tramau River (zone 1)
.and was formerly · (1924, p. 25) listed as Mayaites cf. transiens. The associated
"Xvl . sp. Juv." (No. 321) may however represent the young of that or some other
species of Epimayaites. Whether Waagen's Dhosa Oolite example from north-west
of J arra belongs to the present species is uncertain, but the higher beds of
the Argovian, in that neighbourhood, are brown or greenish and oolitic, not
in the form of red ironstone as in Wagur or Eastern Kachh.
EPIMAYAITES AXONOIDES, sp. nov.
•(Pl. XXV, figs. Sa, b; pi. XXXIV, figs. 3a, b; pl. XLVII, fig. 2; pl. XLVIII,
fig. 4; pl. XLIX, fig. 8.)
This species is based on the large example figured in pl. XLVII, fig. 2,
.and pl. XLVIII, fig. 4, which is still septate at the end. It is connected