﻿628 
  

  

  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  [24] 
  

  

  Lambrus 
  Verrillii 
  Smith. 
  

  

  Proc. 
  National 
  Mus., 
  iii, 
  p. 
  415, 
  1881; 
  vi, 
  p. 
  14, 
  1883. 
  

   (Plate 
  II, 
  Fig. 
  2.) 
  

   Specimens 
  examined. 
  

   [Locality: 
  Off 
  Martha's 
  Vineyard. 
  J 
  

  

  [Locality: 
  Off 
  Cape 
  Hatteras.] 
  

  

  py-M. 
  

  

  gy. 
  M. 
  

   crs. 
  S. 
  

  

  Oct. 
  19 
  

   Oct. 
  19 
  

   Oct. 
  21 
  

  

  2 
  s. 
  

   1*. 
  

   11. 
  

  

  Measurements 
  in 
  millimeters. 
  

  

  Catalogue 
  number 
  8655 
  

  

  Station 
  2244 
  

  

  Sex 
  Young. 
  

  

  Length 
  of 
  carapax 
  9. 
  6 
  

  

  Breadth, 
  including 
  lateral 
  spines 
  10. 
  4 
  

  

  Breadth, 
  excluding 
  lateral 
  spines 
  9.7 
  

  

  Length 
  of 
  cheliped 
  21.0 
  

  

  Length 
  of 
  merus 
  7. 
  3 
  

  

  Length 
  of 
  propodus 
  10. 
  

  

  7217 
  

   2268 
  

  

  c? 
  

   12.7 
  

   14.3 
  

   13.0 
  

   29.0 
  

   11.0 
  

   13.5 
  

  

  7218 
  

   2208 
  

  

  d 
  

   13.7 
  

   16.4 
  

   15.0 
  

   35.0 
  

   12.5 
  

   16.0 
  

  

  8655 
  

   2244 
  

  

  d 
  

   14.6 
  

   17.6 
  

   15.8 
  

   36.0 
  

   13.5 
  

   10.5 
  

  

  7217 
  

   2268 
  

  

  d 
  

   15.7 
  

   18.9 
  

   16.5 
  

   38.0 
  

   14.0 
  

   17.5 
  

  

  7255 
  

   2301 
  

  

  d 
  

   28.4 
  

   35.0 
  

   30.8 
  

   88.0 
  

   34.0 
  

   41.0 
  

  

  Some 
  of 
  these 
  specimens 
  vary 
  considerably 
  from 
  those 
  originally 
  de- 
  

   scribed. 
  The 
  small 
  male, 
  721S, 
  is 
  armed 
  with 
  fewer 
  and 
  much 
  less 
  con- 
  

   spicuous 
  tubercles 
  and 
  teeth, 
  all 
  the 
  spiniform 
  elevations 
  of 
  the 
  dorsal 
  

   surface 
  of 
  the 
  carapax 
  being 
  reduced 
  to 
  low 
  and 
  inconspicuous 
  tuber- 
  

   cles, 
  the 
  teeth 
  of 
  the 
  anterior 
  part 
  of 
  the 
  antero-lateral 
  margin 
  are 
  

   nearly 
  obsolete, 
  and 
  the 
  marginal 
  teeth 
  of 
  the 
  chelipeds 
  are 
  much 
  shorter 
  

   and 
  some 
  of 
  them, 
  especially 
  on 
  the 
  outer 
  edge 
  of 
  the 
  chela, 
  are 
  obso- 
  

   lete. 
  On 
  the 
  other 
  hand, 
  in 
  the 
  two 
  small 
  males, 
  7217, 
  and 
  the 
  large 
  

   male, 
  7255, 
  the 
  tubercles 
  of 
  the 
  dorsal 
  surface 
  of 
  the 
  carapax 
  and 
  many 
  

   of 
  those 
  of 
  the 
  chelipeds 
  are 
  much 
  more 
  x)rominent 
  than 
  in 
  the 
  speci- 
  

   mens 
  originally 
  described, 
  the 
  rostrum 
  is 
  more 
  abruptly 
  constricted 
  and 
  

   the 
  terminal 
  portion 
  narrower, 
  longer, 
  spiniform, 
  and 
  armed 
  with 
  lateral 
  

   tubercles. 
  

  

  These 
  variations 
  incline 
  me 
  to 
  the 
  belief 
  that 
  this 
  species 
  is 
  really 
  the 
  

   L. 
  Pourtalesii 
  of 
  Stimpson 
  and 
  that 
  A. 
  Milne-Edwards's 
  figure 
  of 
  that 
  

   species 
  is 
  either 
  incorrect 
  or 
  based 
  on 
  some 
  other 
  species. 
  

  

  Lambrus 
  agonus 
  Stimpson. 
  

  

  Bull. 
  Mus. 
  Comp. 
  Zool., 
  ii, 
  p. 
  131, 
  1870. 
  A.M. 
  -Edwards. 
  Crust. 
  Region 
  Mex- 
  

   icaiue, 
  p. 
  151, 
  pi. 
  28, 
  figs. 
  3-36, 
  1878. 
  

  

  Station 
  2296, 
  October 
  20, 
  off 
  Cape 
  Hatteras, 
  north 
  lat. 
  35° 
  35' 
  20", 
  

   west 
  long. 
  74° 
  58' 
  45", 
  27 
  fathoms, 
  coarse 
  gray 
  sand 
  ; 
  one 
  male 
  (7250). 
  

  

  