Table of Contents. 



Sub-Order — Asellota . 



,, Phreatoicidea 



„ Flabellifera 



„ Valvifera 



,, Oniscoidea 



,, Epicaridea 



Order — Amphipoda 



Sub-Order — Gammaridea 

 ,, Hyperiidea 



,, Caprellidea 



Division^ — HoPLOCARIDA 



Order — Stomatopoda 

 Division — EuCARlDA 

 Order — Euphausiacea 

 ,, Decapoda . 

 Sub-Order — Macrura 

 Tribe — Penaeidea 

 ,, Stenopidea 

 ,, Caridea 

 ,, Astacidea (Nephropsidea) 

 ,, LoRicATA (Scyllaridea) 

 ,, Eryonidea 

 ,, Thalassinidea 

 Sub-Order — Anomura . 

 Tribe — Paguridea . 

 ,, Galatheidea 



,, HiPPIDEA 



Sub-Order — Brachyura 

 Tribe — Dromiacea . 

 ,, oxystomata . 

 ,, oxyrhyncha . 

 ,, Cyclometopa 

 ,, Catometopa . 



Class 2.— TlilLOBITA 



Class 3— AEACHNIDA 



Sub-Class— EUARACHNIDA 



Division — Delobranchia 

 Order — Xiphosura . 

 ,, Gigantostraca 

 Division — Embolobeanchia 

 Order— Scorpiones . 

 ,, Pedii'alpi . 



