FUIsXTIOIsS  OF  THE  HAIRS  OE  THE  CRUSTACEA.  903 
Fig.  4.  More  highly  magnified  view  of  the  outer  extremities  of  three  of  the  tubules, 
from  fig.  3,  with  the  tubular  fibres  passing  through  and  issuing  from  them. 
Fig.  5.  From  the  end  of  the  larger  foot-jaw  of  the  Shrimp: — a,  the  pulp,  made  up  of 
tubular  structure  containing  the  hair-fibres,  has  been  torn  down  from  the 
shell,  h ; towards  the  lower  part,  on  the  right,  the  fibres  are  seen  passing  into 
the  hau’-canals. 
Fig.  6.  More  highly  magnified  view  of  some  of  the  preceding  tubules,  with  their  hair- 
fibres. 
Fig.  7.  Contents  of  the  claw  of  the  shrimp,  the  muscular  tissue  removed : — a,  the  hook- 
like poUex ; h,  the  index ; c,  the  central  lamina  on  which  the  hair-fibres  are 
supported ; <?,  the  nerve  running  up  to  the  tubular  structure  from  which  the 
hair-fibres  are  issuing. 
Fig.  8.  The  flabellum  of  the  tail  of  the  prawn,  showing  the  tubular  arrangement  of  the 
chorium,  and  the  nerve  {a)  dividing  and  passing  towards  the  tubules:  at  some 
parts  the  nerve  can  be  traced  to  the  extremities  of  the  tubules,  and  may  be 
seen  to  be  connected  with  the  hair-fibres. 
6 B 
MDCCCLVIII. 
