﻿Marsipobranchs 
  of 
  the 
  Order 
  Hyperoartii. 
  197 
  

  

  2. 
  Geotria 
  stenostoma. 
  

  

  Geotria 
  chilensis 
  (part.), 
  Giinth. 
  Cat. 
  Fish. 
  viii. 
  p. 
  509 
  (1870). 
  

   Velasia 
  stenostomus, 
  Ogilby, 
  Proc. 
  Linn. 
  Soc. 
  N.S.W. 
  xxi. 
  1896, 
  p. 
  409. 
  

   Macrophthalmia 
  chilensis, 
  Plate, 
  Sitzungsb. 
  Ges. 
  naturf. 
  Fr. 
  Berlin, 
  

  

  1897, 
  p. 
  137. 
  

   . 
  Geotria 
  chilensis, 
  Plate, 
  Zool. 
  Jahrb. 
  Suppl. 
  v. 
  1902, 
  p. 
  660, 
  pi. 
  xix. 
  

  

  tigs. 
  7-16. 
  

   Geotria 
  stenostomus, 
  Plate, 
  t. 
  c. 
  p. 
  671, 
  pi. 
  xix. 
  fig. 
  21. 
  

  

  Australia; 
  New 
  Zealand 
  ; 
  Chile. 
  

  

  1. 
  510 
  mm. 
  Otago. 
  Otago 
  Mus. 
  

  

  2-3. 
  500-530 
  mm. 
  New 
  Zealand. 
  W. 
  Colenso, 
  Esq. 
  

  

  4. 
  540 
  mm. 
  Swan 
  River. 
  

  

  In 
  all 
  these 
  the 
  middle 
  cusp 
  of 
  the 
  anterior 
  lingual 
  lamina 
  

   is 
  well 
  developed, 
  but 
  shorter 
  and 
  weaker 
  than 
  the 
  lateral 
  

   cusps. 
  Ogilby 
  (p. 
  410) 
  describes 
  the 
  median 
  cusp 
  as 
  being 
  " 
  as 
  

   long 
  as 
  the 
  outer 
  pair," 
  but 
  elsewhere 
  (p. 
  416) 
  he 
  states 
  that 
  

   the 
  middle 
  cusp 
  is 
  absent 
  in 
  one 
  of 
  his 
  three 
  examples. 
  Four 
  

   of 
  Plate's 
  specimens 
  agree 
  in 
  this 
  character 
  with 
  those 
  listed 
  

   above, 
  but 
  in 
  a 
  fifth 
  the 
  median 
  cusp 
  is 
  as 
  long 
  as 
  the 
  others, 
  

   and 
  in 
  a 
  sixth 
  (his 
  G. 
  stenostomus) 
  not 
  only 
  as 
  long 
  but 
  as 
  

   strong 
  as 
  the 
  lateral 
  cusps. 
  

  

  3. 
  Geotria 
  saccifera, 
  sp. 
  n. 
  

   New 
  Zealand. 
  

   1. 
  420 
  mm. 
  (type 
  of 
  the 
  species). 
  Otago. 
  Otago 
  Mus. 
  

  

  4. 
  Geotria 
  australis. 
  

  

  Geotria 
  australis, 
  Gray, 
  Chondropt. 
  p. 
  142, 
  pi. 
  ii. 
  (1851), 
  or 
  Proc. 
  Zool. 
  

  

  Soc. 
  1851, 
  p. 
  238 
  ; 
  Giinth. 
  Cat. 
  Fish. 
  viii. 
  p. 
  508 
  (1870) 
  ; 
  Ogilby, 
  

  

  Proc. 
  Linn. 
  Soc. 
  N.S.W. 
  xxi. 
  1896, 
  p. 
  422; 
  Plate, 
  Zool. 
  Jahrb. 
  

  

  Suppl. 
  v. 
  1902, 
  p. 
  668, 
  pi. 
  xix. 
  figs. 
  17-19. 
  

   Velasia 
  chilensis, 
  Philippi, 
  Arch, 
  f. 
  Nat. 
  1857, 
  p. 
  266, 
  and 
  1863, 
  pi. 
  x. 
  

  

  fig- 
  a. 
  

   Thysanochilus 
  valdivianus, 
  Philippi, 
  t. 
  c. 
  p. 
  268. 
  

   Geotria 
  allportii, 
  Giinth. 
  Proc. 
  Zool. 
  Soc. 
  1871, 
  p. 
  675, 
  pi. 
  lxx. 
  

  

  Australia; 
  Chile. 
  

  

  1. 
  480 
  mm. 
  (type 
  of 
  the 
  species). 
  Inkaspinki. 
  R. 
  A. 
  Pain, 
  Esq. 
  

  

  2. 
  410 
  mm. 
  S. 
  Australia. 
  Army 
  Med. 
  Coll. 
  

  

  3. 
  350 
  mm. 
  (type 
  of 
  G. 
  allportii). 
  Tasmania. 
  M. 
  Allport, 
  Esq. 
  

  

  5. 
  Geotria 
  macrostoma. 
  

  

  Petromyzon 
  macrostomus, 
  Burmeister, 
  Ann. 
  Mus. 
  Buenos 
  Aires, 
  pt. 
  5, 
  

   1868; 
  Act. 
  Soc. 
  Pakeont. 
  p. 
  xxxvi 
  ; 
  Giinth. 
  Cat. 
  Fish. 
  viii. 
  p. 
  506 
  

   (1870). 
  

  

  