28 (27) Form somewhat lobsterlike; rostrum long and narrow Family Galatheidae, Munida . . A 



A (28) Second (apparent first) abdominal segment armed with tiny anterior spines 



M . iris 



Figure 59. — Munida iris, dorsal view 

 with abdomen flexed. 



A (28) Both second (apparent first) and third abdominal segments armed with series 



of tiny anterior spines (a large species) M. valida 



Figure 60. — Munida valida. dorsal view 

 with abdomen flexed. 



28 (27) Form crablike; rostrum short and broad or absent Family Porcellanidae 29 



29 (28) Carapace distinctly broader than long, front smooth in dorsal view Polyonyx gibbesi 



Figure 61. — Polyonyx gibbesi, 

 carapace and chelae. 



22 



