﻿264 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  96 
  

  

  Remarks. 
  — 
  Three 
  well-known 
  species 
  have 
  a 
  very 
  uniform 
  outer 
  

   facies. 
  Although 
  unicinctus 
  of 
  Japan 
  has 
  only 
  two 
  pairs 
  of 
  nephridia, 
  

   it 
  is 
  indistinguishable 
  by 
  external 
  features 
  from 
  small 
  examples 
  of 
  

   caupo. 
  The 
  details 
  of 
  skin 
  and 
  setae 
  are 
  practically 
  identical. 
  The 
  

   alimentary 
  canal, 
  except 
  for 
  minor 
  details 
  of 
  mesenteries, 
  is 
  closely 
  

   similar 
  in 
  the 
  two 
  species. 
  Apparently 
  umcindus 
  does 
  not 
  reach 
  the 
  

   large 
  size 
  of 
  caupo 
  and 
  chilensis, 
  both 
  of 
  which 
  have 
  a 
  third 
  (posterior) 
  

   pair 
  of 
  nephi'idia. 
  The 
  anterior 
  setae 
  of 
  chilensis 
  are 
  blunt 
  and 
  

   scarcely 
  tapered 
  while 
  in 
  the 
  other 
  two 
  species 
  they 
  are 
  strongly 
  tapered 
  

   and 
  sharp. 
  In 
  chilensis, 
  as 
  compared 
  to 
  caupo, 
  dorsoventral 
  muscle 
  13 
  

   is 
  weaker, 
  the 
  crop 
  and 
  gizzard 
  are 
  longer, 
  and 
  the 
  interval 
  between 
  

   end 
  of 
  stomach 
  and 
  beginning 
  of 
  siphon 
  is 
  about 
  three 
  times 
  greater. 
  

   The 
  attachment 
  of 
  the 
  anterior 
  end 
  of 
  the 
  respiratory 
  portion 
  of 
  

   midgut 
  (pi. 
  36, 
  figs. 
  1, 
  2) 
  presents 
  important 
  differences. 
  

  

  Urechis 
  chilensis 
  (Miiller), 
  synonym 
  U. 
  farcimen 
  (Baird), 
  is 
  found 
  

   at 
  Sandy 
  Point, 
  Strait 
  of 
  Magellan. 
  My 
  specimen, 
  taken 
  by 
  the 
  

   Hassler 
  Expedition, 
  was 
  kindly 
  donated 
  by 
  the 
  Museum 
  of 
  Com- 
  

   parative 
  Zoology. 
  

  

  A 
  fourth 
  species, 
  Urechis 
  novae-zelandiae 
  (Dendy), 
  awaits 
  detailed 
  

   investigation 
  (Dendy, 
  1898; 
  Poche, 
  1920). 
  

  

  Dr. 
  Carlos 
  E. 
  Porter, 
  of 
  Santiago, 
  Chile, 
  has 
  called 
  attention 
  {in 
  

   lift.) 
  to 
  the 
  name 
  Pinuca 
  edulis 
  Claudio 
  Gay 
  (1854, 
  p. 
  475). 
  Dr. 
  W. 
  

   L. 
  Schmitt, 
  to 
  whom 
  Dr. 
  Porter 
  sent 
  the 
  information, 
  had 
  photo- 
  

   graphs 
  made 
  of 
  the 
  five 
  pages 
  covering 
  the 
  section 
  on 
  "Sipunculides" 
  

   in 
  the 
  "Historia 
  . 
  . 
  . 
  de 
  Chile." 
  Four 
  of 
  these 
  are 
  pages 
  53-56 
  of 
  volume 
  

   3 
  published 
  in 
  1849 
  and 
  list 
  Sipunculus 
  lagena 
  and 
  S. 
  cylindricus. 
  

   Pinuca 
  edulis 
  is 
  described 
  in 
  supplementary 
  volume 
  8, 
  published 
  in 
  

   1854, 
  as 
  follows: 
  

  

  Afiade 
  tomo 
  III, 
  pdg 
  56. 
  Pinuca 
  edulis. 
  Por 
  haber 
  perdido 
  los 
  ejemplares 
  

   que 
  teniamos 
  de 
  este 
  singular 
  Sipunculiano, 
  es 
  precise 
  d 
  lo 
  menos 
  senalarlo 
  & 
  la 
  

   atencion 
  de 
  los 
  naturalistas 
  y 
  viajeros. 
  Segun 
  nuestro 
  diario 
  es 
  de 
  un 
  bianco 
  

   pardusco 
  siicio 
  y 
  tiene 
  de 
  dos 
  d. 
  tres 
  pulgadas 
  de 
  largo 
  y 
  como 
  una 
  de 
  ancho. 
  Su 
  

   cuerpo 
  es 
  subcilfndrico, 
  ligeramente 
  hinchado 
  en 
  el 
  medio 
  y 
  adelgazado 
  en 
  anabas 
  

   puntas, 
  siendo 
  la 
  anterior 
  mucho 
  mas 
  obtusa 
  que 
  la 
  posterior. 
  El 
  cuero 
  es 
  grueso, 
  

   coridceo, 
  un 
  tanto 
  arrugado 
  en 
  al 
  traves, 
  16 
  que 
  proviene 
  de 
  la 
  reunion 
  de 
  una 
  

   infinidad 
  de 
  pentitos 
  mas 
  6 
  menos 
  prominentes. 
  La 
  boca 
  es 
  pequena, 
  arugada, 
  

   rodeada, 
  d 
  poca 
  distancia, 
  de 
  muy 
  pequenos 
  aguijones 
  apenas 
  visibles, 
  subre- 
  

   tractiles 
  y 
  dispuestos 
  en 
  circulo. 
  El 
  ano 
  se 
  halla 
  d 
  la 
  otra 
  extremidad 
  y 
  es 
  

   bastante 
  grande, 
  liso, 
  circular 
  y 
  un 
  poco 
  hendido. 
  Un 
  diseiio 
  hecho 
  en 
  el 
  lugar, 
  

   senala 
  hdcia 
  el 
  medio 
  una 
  reunion 
  de 
  pequenos 
  cuerpos 
  dispuestos 
  en 
  una 
  banda 
  

   circular 
  de 
  una 
  linea 
  poco 
  mas 
  6 
  menos 
  de 
  ancho. 
  

  

  Este 
  animal 
  que 
  los 
  habitantes 
  comen 
  cocido 
  en 
  la 
  brasa 
  despues 
  de 
  haberle 
  

   quitado 
  las 
  dos 
  extremidades, 
  se 
  halla 
  en 
  las 
  arenas 
  de 
  la 
  isla 
  de 
  Chiloe 
  cerca 
  de 
  

   Castro, 
  etc. 
  En 
  mi 
  diario 
  hallo 
  notado 
  que 
  hace 
  el 
  pasaje 
  de 
  los 
  Priapos 
  d 
  los 
  

   Sipunculos. 
  

  

  Without 
  specimens 
  from 
  Chilo6 
  Island 
  it 
  is 
  not 
  possible 
  to 
  determine 
  

   whether 
  Pinuca 
  edulis 
  is 
  the 
  same 
  animal 
  as 
  Urechis 
  chilensis, 
  which 
  

   has 
  not 
  been 
  reported 
  so 
  far 
  north. 
  If 
  Pinuca 
  is 
  an 
  Urechis 
  it 
  is 
  

  

  