BUREAU OF AMERICAN ETHNOLOGY BULLETIN 177 PLATE 21 
Type sherds of Aruka Incised, Mabaruma Phase. a-b, Motif 1: unzoned, rectilinear. 
c-f, Motif 2: unzoned, curvilinear. g—1, Motif 3: zoned incisions. j-/, Motif 4: bands 
of incised lines on interior of everted rims. m-—o, Motif 5: lines on exterior of rims. 
