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  OF 
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  atomic 
  weight 
  and 
  physiological 
  action, 
  is 
  so 
  large, 
  that 
  that 
  there 
  can 
  be 
  no 
  

   doubt 
  that 
  these 
  molecular 
  properties 
  of 
  inorganic 
  elements 
  are 
  closely 
  connected 
  

   with 
  their 
  physiological 
  action* 
  

  

  Mr. 
  Stearns, 
  after 
  describing 
  the 
  general 
  characteristics 
  of 
  the 
  

   Nudibranchiata, 
  submitted 
  the 
  following. 
  

  

  Descriptions 
  of 
  a 
  New 
  Genus 
  and 
  two 
  New 
  Species 
  of 
  Nudi- 
  

   branchiate 
  Mollusks 
  from 
  the 
  Coast 
  of 
  California. 
  

  

  BY 
  ROBERT 
  E. 
  C. 
  STEARNS. 
  

  

  Genus 
  LATERIBEANCHIiEA, 
  Stearns. 
  

   Animal 
  like 
  Triopa, 
  with 
  a 
  single 
  series 
  of 
  gills 
  on 
  each 
  side, 
  central 
  or 
  sub- 
  

   central 
  and 
  opposite. 
  

  

  Fig. 
  1, 
  (3). 
  

  

  Fig. 
  2,f). 
  

  

  LATERIBRANCHI^A 
  FESTIVA, 
  SteamS, 
  FiG. 
  1. 
  

  

  Body 
  slug-shaped, 
  about 
  one 
  inch 
  long 
  ; 
  of 
  a 
  translucent 
  cream 
  white 
  color 
  on 
  

   back, 
  ornamented 
  with 
  looped 
  linear 
  markings 
  on 
  ea 
  ch 
  side, 
  of 
  an 
  opaque 
  c/ta% 
  

  

  *NoTE.— 
  In 
  these 
  experiments 
  which 
  were 
  conducted 
  to 
  ascertain 
  the 
  general 
  

   effects 
  of 
  the 
  substances 
  used, 
  the 
  quantities 
  employed 
  were 
  usually 
  injected 
  in 
  

   four 
  or 
  five 
  doses, 
  and 
  therefore 
  do 
  not 
  probably 
  indicate 
  the 
  miuimum 
  doses 
  

   that 
  would 
  be 
  fatal. 
  

  

  