Diagram  of  cochineal  insect  of  commerce  showing  an  ovoid  sac-like  membraneous  cradle 
enclosing  numerous  young  larvas  (I).  Parts  of  the  mother  insect  :  m,  mouth  part  ;  b,  beak  or 
proboscis  ;  a,  antennas  ;  /,  three  pairs  of  legs  ;  r,  respiration  channels  or  breathing  pores  ;  s,  seg- 
ments in  abdominal  region  ;  w,  wax-pores. 
