Contents 



Introduction 1 



Distribution, Relationships, and Origins 13 



Ecological Discussion 32 



Local Importance of Dominican Species 45 



Explanation of Measurements 48 



Key to the Families 50 



Family Penaeidae 51 



Family Atyidae 56 



Family Palaemonidae 87 



Family Hippolytidae 116 



Family Astacidae 117 



Family Porcellanidae 121 



Family Coenobitidae 123 



Family Portunidae 127 



Family Pseudothelphusidae 136 



Family Trichodactylidae 152 



Family Xanthidae 153 



Family Grapsidae 156 



Family Gecarcinidae 194 



Family Ocypodidae 202 



Glossary of Terms 224 



Literature Cited 228 



Index 244 



Plates facing p. 42 



