4% PSEUDOCERATITES OF THE CRETACEOUS. 
MeTATISSOTIA HAPLOPHYLLA (Redtenbacher). 
Ammonites haplophylla Redtenbacher, 1873, Abhandl. K.-k. geol. Reichsanstalt, Vol. 
V, pl. 23. 
Tissotia haplophylla (pars) Grossouvre, 1893, Ammonites Craie supérieure, pl. 4, 
fio. 5 (not figs. 3, 4). 
This form is compressed, but has heavy fold-lke costa and very stout 
nodes on the umbilical shoulder and ventro-lateral angles, the venter being 
similar to that of M. fourneli, but with a line of nodes instead of a con- 
tinuous keel. The French fossil quoted above may possibly be the same, 
but it has quite a distinct aspect, and the supposition of Grossouvre that 
the sutures will prove to be similar when those of the Austrian specimen are 
better known, is not sustained by the collateral evidence. Grossouvre’s 
figs. 3 and 4 of the supposed neanic stage of bis haplophylla are certainly 
quite distinct, having an entire keel and aspect allied closely to Metatissotia 
fourneli and robini and here treated as distinct under the name of Meta. 
nodosa. 
Locality: Austria. 
Age: Senonian. 
MeETaTISsoTIA EWALDI (von Buch). 
Ammonites ewaldi yon Buch, Abhandl. K. Akad. Wiss. zu Berlin, 1848, pl. 6, 
Tissotia ewaldi (pars) Grossouvre, 1893, Ammonites Craie supérieure, pl. 4, fi 
pl. 9, fig. 5). 
This species is very similar to Meta. robini, but, so far as known by 
the figures of Grossouvre and others, these two species appear to be distinct 
in their sutures. Both species have the first lateral saddles deeply divided 
and the outer arms of these are shorter than the inner ones, but the outlines 
of these outer arms in this species are rounded, phylliform, undivided, and 
straight or parallel with the keel. In robini these outer arms are inclined 
toward the keel and the outlines are subdivided by marginal lobes in 
mature specimens, 
Locality: France. 
Age: Senonian. 
