﻿Report 
  of 
  the 
  President. 
  35 
  

  

  typical 
  forms 
  and 
  examples 
  of 
  extant 
  species. 
  The 
  most 
  

   notable 
  specimen 
  mounted 
  was 
  the 
  Titanichthys, 
  the 
  veritable 
  

   monster 
  of 
  the 
  Devonian 
  Age. 
  Important 
  work 
  has 
  been 
  

   accomplished 
  in 
  classifying, 
  labeling, 
  arranging 
  and 
  catalogu- 
  

   ing 
  the 
  study 
  collections, 
  in 
  which 
  there 
  are 
  no 
  less 
  than 
  200 
  

   types 
  and 
  300 
  figured 
  specimens. 
  An 
  illustrated 
  catalogue 
  of 
  

   the 
  collection 
  of 
  type 
  specimens 
  has 
  been 
  prepared. 
  

  

  LIVING 
  INVERTEBRATES— 
  SYNOPTIC 
  COLLECTION. 
  

  

  Department 
  of 
  Invertebrate 
  Zoology. 
  — 
  So 
  many 
  col- 
  

   lections 
  are 
  placed 
  in 
  the 
  custody 
  of 
  this 
  department 
  that 
  the 
  

   mere 
  routine 
  work 
  of 
  cataloguing 
  and 
  preserving 
  the 
  new 
  

   material 
  has 
  taken 
  considerable 
  of 
  the 
  time 
  of 
  the 
  Curator 
  

   and 
  his 
  assistants; 
  nevertheless, 
  several 
  important 
  installations 
  

   have 
  been 
  made. 
  

  

  The 
  collections 
  in 
  the 
  Synoptic 
  Hall 
  are 
  being 
  developed. 
  

   The 
  most 
  important 
  addition 
  is 
  a 
  series 
  of 
  models 
  showing 
  the 
  

   larval, 
  pupal 
  and 
  adult 
  stages 
  (both 
  male 
  and 
  female) 
  of 
  the 
  

   Malarial 
  Mosquito. 
  The 
  models, 
  which 
  have 
  been 
  prepared 
  

   by 
  Dr. 
  B. 
  E. 
  Dahlgren, 
  represent 
  the 
  insect 
  enlarged 
  75 
  diam- 
  

   eters 
  or 
  more 
  than 
  400,000 
  times 
  its 
  normal 
  bulk. 
  These 
  are 
  

   further 
  supplemented 
  by 
  a 
  series 
  of 
  twenty 
  models 
  showing 
  

   the 
  malarial 
  organism 
  and 
  its 
  development 
  in 
  the 
  human 
  blood 
  

   and 
  in 
  the 
  tissues 
  of 
  the 
  mosquito. 
  

  

  Dr. 
  Dahlgren 
  also 
  has 
  completed, 
  or 
  has 
  in 
  preparation, 
  a 
  

   number 
  of 
  models 
  which 
  will 
  greatly 
  improve 
  the 
  synoptic 
  

   collection. 
  

  

  Dr. 
  Wheeler 
  spent 
  the 
  summer 
  abroad, 
  where 
  he 
  continued 
  

   his 
  studies 
  of 
  the 
  Formicidae, 
  did 
  collecting 
  and 
  effected 
  many 
  

   exchanges. 
  He 
  visited 
  the 
  Azores, 
  Gibraltar, 
  Italy 
  and 
  

   various 
  parts 
  of 
  Switzerland 
  and 
  Germany. 
  From 
  all 
  these 
  

   localities 
  he 
  obtained 
  important 
  collections 
  of 
  ants. 
  While 
  in 
  

   Switzerland 
  he 
  was 
  the 
  guest 
  of 
  Professor 
  Auguste 
  Forel, 
  the 
  

   most 
  eminent 
  of 
  living 
  myrmecologists, 
  who 
  presented 
  to 
  the 
  

   Museum 
  a 
  large 
  and 
  valuable 
  collection 
  of 
  ants, 
  consisting 
  of 
  

   3,519 
  specimens 
  and 
  representing 
  1,385 
  species, 
  of 
  which 
  788 
  

   are 
  types. 
  

  

  