BURROWING BARNACLE — TOMLINSON AND NEWMAN 521 



2. 



r-0 



L-0.25MM 



Figures 2-4. — Lithoglyptes spinatus: 2, 3, cross-sections through female in regions indicated 

 in figure 1 at levels A and B; figure 3 includes male in pocket on right side of female; 

 4, male. For meaning of abbreviations see figure 1. 



