124: Transactions of the Royal Society of South Africa. 
Nowakites, gen. nov. 
(genotype : N. carezi, de Grossouvre sp., loc. cit., 1894, p. 190, pi. xxv, fig. 3), 
attaching itself to such contemporaneous (Coniacian) forms as ' Puzosia ' 
le marchandi, Grossouvre. NoivaJcites draschei, Redtenbacher sp., N. yolco- 
yamai, Jimbo sp., N. canali, N. linderi, Grossouvre sp., and N. paillettianus, 
d'Orbigny sp., probably all belong to this genus, the last apparently entirely 
different from the Texas A. flaccidicosta, Homer, with which Thomas and 
Peron and Nowak (loc. cit., p. 354) had identified it. 
Nowakites savini, Grossouvre sp., represents a lateral offshoot. The 
forms also bear some resemblance to certain tuberculate Madrasites, Pseudo- 
Jcossmaticeras, and Canadoceras, all of which, however, are of uppermost 
Senonian age. On the other hand, the Lower Utatur 
Holcodiscoides, gen. nov. 
(genotype : A. cliveanus, Stoliczka, " Foss. Ceph. Cret. Rocks S. India," 
1865, p. 157, pi. lxxvii, fig. 3), which also includes H. moraviatoorensis, 
papillatus, and paravati, Stoliczka sp., and which has wrongly been in- 
cluded in Kossmaticeras, is not directly related either to Nowakites or to 
Madrasites. 
For ' Sonneratia ' janeti, Grossouvre, which forms a separate develop- 
ment, allied to Noivakites, 
Pachydiscoides, gen. nov. 
(loc. cit., 1894, p. 145, pi. xxii, fig. 4) is proposed. ? Pachydiscoides 
pervinquierei, n.n. = P. n. sp. cf. P. janeti, Pervinquiere non Grossouvre,* 
probably belongs to the same stock. 
From the Coniacian stock, here separated as Nowakites, forms with 
increasingly strong ornamentation, like Redtenbacher's A. isculensis, result, 
for which the genus 
Eupachydiscus, gen. nov. 
(genotype : 'P.' isculensis (Redtenbacher), Grossouvre, pi. xxvi, fig. la, b 
only), is proposed. Nowakites linderi (Grossouvre, pi. xxiv, fig. 4), one of 
the largest species of that genus, already foreshadows the present develop- 
ment ; on the other hand, Eup. levyi (Grossouvre) and Eup. grossouvrei 
(Kossmat) are transitional to the later and much more abundant Parapachy- 
discus, in which tuberculation seems to begin already in the smooth 
initial stage. Eup. jeani (Grossouvre) is another species, and a Japanese 
example, studied by the writer, apparently allied to ' Pachydiscus ' haradai 
and P. teshionensis, Jimbo, may belong to the same stock. 
* " Et. de Pal. Tunis., I, Ceph. d. Ter. Second." (1907), p. 174, pi. vii, fig. 11. 
