On Cretaceous Cephalopoda from Zululond. 



243 



suture-line agrees with the South American Lenticems and Paralenti- 

 ceras included by Hyatt in the family Euloplwcerat'ulae* These 

 genera, however, include more or less smooth forms, whereas the new 

 genus here proposed is characterised by strong ornament. The latter 

 consists of very prominent umbilical tubercles, each connected by 

 obscure broad ribs with about five outer tubercles. This type of 

 ornament is found in the Senoniau in certain Pseudoschloenbachia 

 (P. papillata, G. C. Crick MS.), in JRnrrolslceras (desmoulinsi) and in 

 certain Tissotids. The first genus has a highly complex suture-line, 

 characterised by a very deep principal lobe, whereas the suture-line of 

 the new genus shows signs of simplification in the peculiar rounding 



separating the forms he described from Enln^lmn-i-as. Eulophoceratidae maybe 

 distantly related to the contemporary Sphcnodiscidae (not the Turonian Ccnlo. 

 poceratidae, often confused with Sphenodiscidae), but there is no connection 



TEXT-FIO. C. 1. Sijhenisrocervs, G. C. Crick (MS.), Upper Senonian, 

 Umtanivuna River, Natal. (After drawings, of the natural size, by the 

 late G. C. Crick.) 1 a. S. <//"//><( /MO/I, Crick MS. (genotype), B.M. No. 

 C194.21. 1 b. S. minor, Crick MS. (B.M. No. C19422). 1 c. S. tenue. Crick 

 MS. (B.M. No. C19423). 2. Eulophoceras natalense, Hyatt (after Woods), 

 Pondoland. For comparison. 



whatever between Spheniscoceras or any other Eulophoceratid and the 

 Placenticeratidae. 



* Loc. cil., 1903 (Pseudoceratites), p. 16, also wrongly including Tegoceras, 

 Hyatt, which is a Hystatoceratid. 



