CONTENTS 



General Discussion 1 



Introduction 1 



Source of Materials 2 



Method of Study 3 



Acknowledgment 5 



In Memoriam 6 



Systematic Discussion 7 



Historical Review 7 



Sexual Dimorphism 10 



Growth and Sexual Maturity 12 



The Male First Pleopod 13 



Summary of Additions and Changes 14 



Territory Covered 16 



Faunal Relationships 18 



Extensions of Range 19 



Method of Treatment 25 



Explanation of Measurements 27 



Abbreviations 29 



Superfamily OXYRHYNCHA 29 



Family HYMENOSOMIDAE 30 



Genus Halicarcinus White 30 



Halicarcinus planatus (Fabricius) 31 



Family MAJIDAE 35 



Subfamily Inachinae 36 



Genus Eurypodius Guerin 39 



Eurypodius latreillei Guerin 40 



Eurypodius longirostris Miers 46 



Genus Anomalothir Miers 48 



A nomalothir hoodensis Garth 48 



Genus Eucinetops Stimpson 51 



Eucinetops lucasi Stimpson 52 



Eucinetops rubellula Rathbun 56 



Eucinetops panamensis Rathbun 58 



Genus Euprognatha Stimpson 60 



Euprognatha bifida Rathbun 61 



Euprognatha granulata Faxon 65 



Genus Collodes Stimpson 67 



Collodes gibbosus (Bell), n. comb 68 



Collodes granosus Stimpson 72 



Collodes tenuirostris Rathbun 74 



Collodes tumidus Rathbun 77 



Collodes robsonae, n. sp 78 



vii 



747' 



