136  SMITHSONIAN    MISCELLANEOUS    COLLECTIONS  VOL.    96 
slight  shoulder  or  notch;  there  are  two  more  of  these  shoulders  or 
ornamental  barbs  at  the  center ;  at  the  top,  two  lines  converge  to  the 
blade  slit,  and  on  the  lower  end  a  decorative  effect  is  provided  by  two 
oblique  lines. 
Type  2a  (pi.  34,  fig.  4).- — -Rounded  to  oval  in  cross-section;  end 
blade ;  two  opposite  barbs  near  the  tang. 
Two  examples,  of  bone,  from  cut  i8,  60  inches  (pi.  34,  fig.  4)  and 
cut  23,  72  inches.  In  both  of  these  the  barbs  are  close  to  the  body, 
and  a  deep  line  continues  upward  as  in  type  2.  In  plate  34,  figure  4, 
decoration  is  restricted  to  a  long,  deep  line  between  the  barbs  and 
another  down  one  edge. 
Type  J  (pi.  34,  fig-S). — No  end  blade ;  a  single  barb  near  the  tang. 
Two  examples :  Cut  21,  38  inches.  Cut  27,  26  inches  (pi.  34,  fig. 5). 
The  first  is  of  ivory,  with  a  longitudinal  ridge  down  both  sides,  giving 
it  a  squarish  cross-section.  The  second,  of  bone  (pi.  34,  fig.  5),  is 
roughly  triangular  in  cross-section,  apparently  unfinished ;  the  single 
barb  (with  tip  broken)  lies  very  close  to  the  body,  and  as  a  continua- 
tion of  it,  a  deeply  cut  straight  line  extends  upward,  almost  meeting 
a  similar  line  opposite,  which,  however,  does  not  end  in  a  barb ;  between 
the  two  lines  are  three  short,  oblique  lines,  with  a  similar  one  lower 
down.  In  the  form  of  the  barb  this  type  of  arrowhead  shows  a  close 
relationship  to  types  2  and  2  a. 
Type  4  (pi.  34,  fig.  6). — Rounded  in  cross-section;  no  end  blade; 
two  opposite,  prominent  barbs  at  about  center. 
Three  examples,  all  of  bone:  Cut  19,  17  inches;  24  inches;  34 
inches  (pi.  34,  fig.  6).  The  other  two  of  this  type  have  deeply  cut 
lines  above  the  barbs  like  plate  34,  figures  2-5. 
Type  5  (pi.  34,  figs.  7-9). — Flat,  or  somewhat  rounded  in  cross- 
section  ;  no  blade ;  a  single,  prominent  barb  at  about  center. 
Eight  examples,  seven  of  bone,  one  of  ivory :  Cut  4,  25  inches. 
Cut  9,  36  inches.  Cut  17,  12  inches;  20  inches  (pi.  34,  fig.  7).  Cut 
18,  25  inches.  Cut  19,  38  inches;  42  inches  (pi.  34,  fig.  8).  Cut  20, 
12  inches  (pi.  34,  fig.  9). 
Type  6  (pi.  34,  fig.  10). — -Mat;  neither  blade  or  barbs. 
Five  examples,  four  of  bone,  one  of  ivory :  Cut  4,  depth  68  inches. 
Cut  9,  24  inches.  Cut  19,  12  inches  (pi.  34,  fig.  10).  Cut  22,  36 
inches  (2). 
There  remain  two  arrowheads  which  do  not  fall  into  any  of  the 
above  types.  Plate  34,  figure  11  (cut  25,  61  in.),  is  of  bone  and  is 
2 1. 1  cm  long.  There  are  three  prominent  barbs  on  one  side,  which 
were  made  in  the  same  manner  as  those  of  plate  34,  figures  2-6,  with 
an  opposite  line  in  place  of  another  barb  as  in  plate  34,  figures  2,  3, 
