﻿120 
  PKOCEKDINGS 
  OF 
  J'HK 
  MALACOLOGICAL 
  SOCIETY. 
  

  

  (instead 
  of 
  three), 
  of 
  wliich 
  the 
  outer 
  one 
  is 
  situated 
  towards 
  the 
  

   middle 
  of 
  the 
  lateral 
  area, 
  rather 
  far 
  fi'om 
  the 
  median 
  line 
  of 
  the 
  

   periphery 
  and 
  hy 
  the 
  ribs 
  crossing 
  the 
  peripheral 
  area 
  without 
  

   interruption. 
  

  

  For 
  these 
  forms, 
  which 
  according 
  to 
  Kilian 
  may 
  be 
  considered 
  as 
  

   having 
  been 
  derived 
  from 
  Acanthoplites, 
  examples 
  of 
  this 
  genus 
  

   occurring 
  with 
  them 
  in 
  the 
  Aptian, 
  Kilian 
  uses 
  the 
  name 
  Ammo7iitoceras 
  

   proposed 
  by 
  Dumas, 
  and 
  in 
  it 
  he 
  includes 
  the 
  Ammonitoceras 
  iicetice 
  of 
  

   Dumas 
  from 
  the 
  Lower 
  Aptian 
  of 
  Laiiguedoc 
  ; 
  Crioceras 
  iranscaspiaim 
  

   described 
  by 
  Sintzov 
  ' 
  from 
  the 
  Lower 
  Gault 
  of 
  the 
  Mangischlak 
  

   Peninsula 
  on 
  the 
  eastern 
  shore 
  of 
  the 
  Caspian 
  Sea, 
  and 
  which 
  Kilian 
  ^ 
  

   states 
  that 
  he 
  himself 
  had 
  also 
  found 
  in 
  the 
  Aptian 
  of 
  the 
  Basses 
  

   Alpes 
  ; 
  also 
  the 
  form 
  noticed 
  by 
  Kilian 
  ^ 
  (under 
  the 
  name 
  of 
  

   Ancyloceras 
  acJierma^mi) 
  and 
  figured 
  by 
  Krenkel* 
  (under 
  Kilian's 
  

   name 
  of 
  Ancyloceras 
  ackermanm) 
  from 
  the 
  Aptian 
  of 
  Delagoa 
  Bay, 
  

   South-East 
  Africa. 
  

  

  The 
  present 
  specimen 
  seems 
  to 
  be 
  clearly 
  referable 
  to 
  this 
  group 
  of 
  

   forms 
  and 
  may 
  be 
  named 
  Ammonitoceras 
  toviletise, 
  the 
  trivial 
  name 
  

   being 
  suggested 
  by 
  the 
  locality 
  whence 
  it 
  came. 
  

  

  EXPLANATION 
  OF 
  PLATE 
  VI. 
  

  

  Ammonitoceras 
  tovilense, 
  n.sp., 
  from 
  the 
  Lower 
  Greensand 
  (Hythe 
  Beds), 
  

  

  Aptian 
  : 
  Tovil, 
  near 
  Maidstone, 
  Kent. 
  

   Fig. 
  1. 
  Lateral 
  aspect. 
  The 
  body-chamber 
  commences 
  at 
  a 
  point 
  immediately 
  

   above 
  the 
  figure 
  2 
  on 
  the 
  scale. 
  

   ,, 
  2. 
  Apertural 
  aspect, 
  showing 
  the 
  siphuncle 
  on 
  the 
  early 
  portion 
  of 
  the 
  

  

  last 
  whorl. 
  

   ,, 
  3. 
  Peripheral 
  view. 
  

  

  The 
  specimen 
  is 
  in 
  the 
  British 
  Museum 
  collection 
  [reg. 
  No. 
  C. 
  14671]. 
  

  

  ^ 
  I. 
  Sintzov, 
  " 
  Untersuchung 
  einiger 
  Ammonitiden 
  aus 
  dem 
  Unterem 
  Gault 
  

   Mangyschlaks 
  und 
  des 
  Kaukasus 
  " 
  : 
  Verhandl. 
  d. 
  russisch-kaiserlichen 
  

   mineral. 
  Gesellschaft, 
  ser. 
  II, 
  vol. 
  xlv, 
  1907, 
  pp. 
  510-11, 
  pi. 
  vi, 
  figs. 
  9-12. 
  

  

  ^ 
  W. 
  Kilian, 
  " 
  Sur 
  le 
  genre 
  Ammonitoceras 
  " 
  : 
  Bull. 
  Soc. 
  g^ol. 
  France, 
  s^r. 
  iv, 
  

   vol. 
  X, 
  1912, 
  p. 
  799. 
  

  

  * 
  W. 
  Kilian, 
  " 
  Ueber 
  Aptien 
  in 
  Siidafrika 
  " 
  : 
  Centralbl. 
  f. 
  Mineral., 
  etc., 
  1902, 
  

  

  p. 
  466. 
  

  

  * 
  E. 
  Krenkel, 
  "Die 
  Aptfossilien 
  der 
  Delagoa-Bai 
  (Siidostafrika) 
  " 
  : 
  Neues 
  

  

  Jahrb., 
  1910, 
  i, 
  p. 
  150, 
  pi. 
  xvii, 
  figs. 
  10, 
  11. 
  

  

  