﻿296 
  B. 
  Wade 
  — 
  Upper 
  Cretaceous 
  Fulgur. 
  

  

  Busy 
  con 
  (Protobusycon) 
  cretaceum, 
  new 
  species. 
  

  

  Description. 
  — 
  Shell 
  rather 
  small 
  for 
  the 
  genus 
  ; 
  outline 
  

   typically 
  fulguroid 
  ; 
  spire 
  low, 
  less 
  than 
  one-fourth 
  the 
  entire 
  

   length 
  of 
  the 
  shell 
  ; 
  earlier 
  volutions 
  broadly 
  rounded, 
  later 
  

   whorls 
  broadly 
  and 
  somewhat 
  obliquely 
  shouldered, 
  — 
  the 
  peri- 
  

   phery 
  falling 
  about 
  two-thirds 
  of 
  the 
  distance 
  from 
  the 
  posterior 
  

   to 
  the 
  anterior 
  sutures 
  ; 
  apex 
  obtuse 
  ; 
  protoconch 
  broken 
  away 
  

   in 
  the 
  type, 
  — 
  the 
  scar 
  large 
  ; 
  the 
  remaining 
  four 
  in 
  number, 
  

   increasing 
  rapidly 
  in 
  size 
  to 
  a 
  much 
  inflated 
  body 
  ; 
  external 
  

   sculpture 
  inconspicuous 
  and 
  rather 
  irregular; 
  axial 
  sculpture 
  

   restricted 
  to 
  a 
  series 
  of 
  low, 
  sub-spinose 
  protuberances 
  crown- 
  

   ing 
  the 
  shoulder 
  keel, 
  ten 
  in 
  number 
  upon 
  the 
  last 
  whorl 
  of 
  

   the 
  spire, 
  horizontally 
  elongated 
  and 
  irregular 
  in 
  size 
  and 
  spac- 
  

   ing 
  upon 
  the 
  final 
  half 
  turn 
  of 
  the 
  ultima 
  ; 
  a 
  second 
  obscure 
  

   keel 
  outlining 
  the 
  base 
  of 
  the 
  body, 
  obsolete 
  toward 
  the 
  aper- 
  

   ture, 
  — 
  the 
  keel 
  beset 
  with 
  four, 
  or 
  possibly 
  five, 
  rudimentary 
  

   spines 
  ; 
  incremental 
  vigorous 
  and 
  crowded 
  toward 
  the 
  aper- 
  

   ture, 
  especially 
  upon 
  the 
  shoulder 
  ; 
  spiral 
  sculpture 
  obscure 
  

   and 
  irregular, 
  — 
  the 
  lirse 
  approximately 
  ten 
  in 
  number 
  on 
  the 
  

   medial 
  portion 
  of 
  the 
  body 
  of 
  the 
  type, 
  tending 
  to 
  alternate 
  in 
  

   size, 
  minutely 
  crenulated 
  by 
  the 
  incrementals 
  ; 
  surface 
  of 
  spire 
  

   so 
  badly 
  decorticated 
  that 
  the 
  character 
  of 
  the 
  finer 
  sculpture 
  

   can 
  not 
  be 
  determined 
  ; 
  line 
  of 
  demarcation 
  between 
  the 
  base 
  

   of 
  the 
  body 
  and 
  the 
  pillar 
  outlined 
  by 
  a 
  shallow 
  sulcus 
  ; 
  in- 
  

   crementals 
  very 
  sharply 
  folded 
  along 
  the 
  sulcus, 
  the 
  fold 
  

   directed 
  toward 
  the 
  aperture, 
  and 
  terminating 
  as 
  a 
  slight 
  pro- 
  

   jection 
  at 
  the 
  margin 
  of 
  thelabrum 
  ; 
  posterior 
  portion 
  of 
  whorl 
  

   closely 
  appressed 
  ; 
  suture 
  inconspicuous; 
  aperture 
  pyriform, 
  

   feebly 
  sulcate 
  at 
  the 
  posterior 
  commissure, 
  terminating 
  

   anteriorly 
  in 
  a 
  long, 
  open 
  canal; 
  outer 
  lip 
  broadly 
  arcuate, 
  

   notched 
  at 
  the 
  shoulder, 
  the 
  incrementals 
  produced 
  into 
  a 
  series 
  

   of 
  varix-like 
  spines 
  ; 
  labrum 
  feebly 
  insinuated 
  also 
  at 
  the 
  base 
  

   of 
  the 
  body, 
  directly 
  in 
  front 
  of 
  the 
  basal 
  sulcus 
  ; 
  inner 
  margin 
  

   of 
  the 
  aperture 
  quite 
  strongly 
  excavated 
  ; 
  parietal 
  wall 
  widely 
  

   and 
  heavily 
  glazed 
  ; 
  columella 
  smooth, 
  sinuous 
  ; 
  anterior 
  canal 
  

   broad, 
  slightly 
  recurved, 
  probably 
  feebly 
  emarginate 
  at 
  the 
  

   anterior 
  extremity. 
  

  

  Dimensions. 
  — 
  Altitude, 
  63'2 
  ram 
  ; 
  length 
  of 
  aperture 
  includ- 
  

   ing 
  canal, 
  50 
  mm 
  ; 
  maximum 
  diameter, 
  35*2 
  mm 
  . 
  

  

  This 
  very 
  interesting 
  species 
  is 
  represented 
  in 
  the 
  Coon 
  

   Creek 
  collection 
  by 
  the 
  single 
  specimen 
  figured 
  which, 
  aside 
  

   from 
  the 
  loss 
  of 
  the 
  protoconch, 
  is 
  well-preserved. 
  In 
  shape 
  and 
  

   elevation 
  of 
  the 
  body, 
  angle 
  of 
  the 
  shoulder, 
  sub-spinose 
  angula- 
  

   tion 
  of 
  the 
  posterior 
  portion 
  of 
  the 
  body 
  and 
  in 
  the 
  general 
  

   aspect, 
  it 
  is 
  curiously 
  similar 
  to 
  Fulgur 
  carica 
  (G-melin) 
  so 
  

   abundant 
  in 
  the 
  recent 
  faunas. 
  The 
  impressed 
  line 
  at 
  the 
  base 
  

  

  