﻿A 
  REVIEW 
  OF 
  THE 
  BEETLE 
  FAMILY 
  PSEUDOMOR- 
  

   PHIDAE, 
  AND 
  A 
  SUGGESTION 
  FOR 
  A 
  REARRANGE- 
  

   MENT 
  OF 
  THE 
  ADEPHAGA, 
  WITH 
  DESCRIPTIONS 
  OF 
  

   A 
  NEW 
  GENUS 
  AND 
  NEW 
  SPECIES 
  

  

  By 
  Howard 
  Notman 
  

   Of 
  Brooklyn, 
  New 
  York 
  

  

  In 
  the 
  author's 
  opinion 
  this 
  group 
  of 
  beetles 
  is 
  entitled 
  to 
  rank 
  

   as 
  a 
  distinct 
  family 
  in 
  the 
  Adephaga. 
  It 
  has 
  been 
  placed 
  hitherto 
  

   as 
  a 
  subfamily 
  of 
  the 
  Carabidae, 
  from 
  which 
  several 
  characters 
  of 
  

   importance 
  distinguish 
  it. 
  The 
  most 
  striking, 
  perhaps, 
  is 
  the 
  

   presence 
  of 
  antennal 
  grooves 
  on 
  the 
  underside 
  of 
  the 
  head 
  between 
  

   the 
  eyes 
  and 
  the 
  maxillary 
  fissures. 
  More 
  important, 
  however, 
  

   systematically 
  is 
  the 
  absence 
  of 
  the 
  suture 
  between 
  the 
  mentum 
  and 
  

   the 
  submentum. 
  This 
  suture 
  is 
  absent 
  in 
  the 
  Amphizoidae 
  also, 
  

   but 
  is 
  present 
  in 
  all 
  the 
  remaining 
  families 
  of 
  the 
  Adephaga. 
  It 
  is 
  

   especially 
  well 
  marked 
  in 
  the 
  Dytiscidae. 
  Another 
  character 
  not 
  

   so 
  well 
  suited 
  for 
  synoptic 
  construction 
  but, 
  nevertheless, 
  more 
  or 
  

   less 
  significant, 
  is 
  the 
  variability 
  in 
  the 
  form 
  and 
  position 
  of 
  the 
  eye. 
  

   This 
  organ 
  is 
  always 
  lateral 
  in 
  position 
  and 
  subrotund 
  in 
  form 
  in 
  the 
  

   Carabidae. 
  In 
  the 
  Pseudomorphidae 
  the 
  genera, 
  which 
  number 
  

   only 
  eight, 
  show 
  the 
  following 
  differences 
  in 
  form 
  and 
  position. 
  In 
  

   Adelotopus 
  the 
  eye 
  is 
  on 
  the 
  upper 
  surface 
  of 
  the 
  head, 
  with 
  a 
  

   well 
  defined, 
  continuous 
  margin 
  beneath 
  it. 
  In 
  Cryptocephalo- 
  

   morpha 
  the 
  eye 
  is 
  lateral 
  in 
  position 
  but 
  by 
  its 
  conformation 
  con- 
  

   tinues 
  the 
  cephalic 
  margin 
  which 
  it 
  structurally 
  interrupts 
  — 
  an 
  ex- 
  

   treme 
  instance 
  of 
  the 
  usually 
  dominant 
  eye-form 
  in 
  subordination 
  to 
  

   the 
  general 
  form 
  of 
  the 
  head. 
  The 
  eye 
  in 
  this 
  genus, 
  as 
  also 
  in 
  

   Pseudomorpha, 
  has 
  a 
  strong 
  angulation 
  beneath. 
  In 
  Silphomorpha 
  

   and 
  Sphallomorpha 
  the 
  eye 
  is 
  round. 
  

  

  It 
  is 
  by 
  no 
  means 
  certain 
  that 
  the 
  genus 
  Adelotopus 
  should 
  not 
  be 
  

   placed 
  in 
  a 
  separate 
  family 
  on 
  account 
  of 
  the 
  difference 
  in 
  the 
  

   position 
  of 
  the 
  eye 
  as 
  described 
  and 
  its 
  position 
  anterior 
  to 
  the 
  

   maxillary 
  fissure, 
  a 
  feature 
  characteristic 
  of 
  the 
  Dytiscidae,' 
  in 
  

   which 
  the 
  maxillary 
  fissure 
  extends 
  as 
  far 
  back 
  as 
  the 
  posterior 
  

   margin 
  of 
  the 
  eye, 
  and 
  also 
  on 
  account 
  of 
  the 
  form 
  of 
  the 
  fissure 
  and 
  

   the 
  form 
  of 
  the 
  antennae. 
  In 
  Silphomorpha, 
  Sphallomorpha, 
  and 
  

  

  No. 
  2586— 
  Proceedings 
  U. 
  S. 
  National 
  Museum, 
  Vol. 
  67, 
  Art. 
  14 
  

  

  27393- 
  

  

  1 
  

  

  