II. Abteil.: Eucyphidea Fani.: Pasipliaeidae , Acanthepyridae, Atyidae, 



Alpheidae , Pandalidae , Hippolytidae, 

 Latreutidae, Rhynchocinetidae, Pontoni- 

 idae , Palaemonidae , Processidae, Cran- 

 gonidae, Gnathophyllidae. 



III. Stenopidea Stenopidae. 

 Unterordnung : Reptantia. 



IV. AbteiL: Eryonidea Fam.: Eryonidae. 



V. Loricata Glypbaeidae. Palinuridae, Scyllaridae. 



VI. Nephropsidea Nephropsidae i), Parastacidae , Potamo- 



biidae. 

 VII. Thalassinidefi (?) Axiidae, Calocaridae,Thaumastochelidae, 



Thalassinidae, Callianassidae. 

 VIII. Paguridea (?) Parapaguridae, Paguridae, Coenobitidae, 



Lithodidae. 

 IX. Galatheidea Acgleidae, Galatheidae, Chirostylidae, 



Porcellanidae. 



X. Hippidea Albuueidae, Hippidae. 



XI. Dromiidea f Homolidae, Dynoraenidae, Dromiidae. 



XII. Oxystomata 



1. Unterabteil. : Dorippinea Fam.: Cyclodorippidae, Dorippidae. 



2. Calappina Calappidae, Orithyidae, Matuticlae. 



3. Leucosiinea r Raninidae, Leucosiidae. 

 XIII. Abteil. : Brachyura 



1. Unterabteil: Majoidea (?) Fain.: Corystidae, Nautilocorystidae, Inacbidae, 



Majidae,Periceridae, (?) Hymenosomidae, 

 (?) Cheiragonidae. 



2. Cancroidea 



1. Sect.: Portuninea Fam.: Platyonycbidae, Polybiidae, Carupidae, 



Portunidae, Thalamitidae , Lissocarcini- 

 dae, Podophthalmidae. 



2. Cyclometopa 



1. ftubsect. : Parthenopiui 



Fam.: Parthenopidae, Eumedonidae. 



2. n Cancrini Atelecyclidae, Carcinidae, Cancridae. 



3. Xantbini (?j Thiidae, Menippidae, Xantbidae, Oziidae, 



Trapeziidae, Potamonidae ). 



3. Sect. : Catametopa 



1. Subsect. : Carcinoplacini 



Fam.: Carcinoplacidae, Gonoplacidae. 



2. , Pinnotherini 



Fam. : Pinnotheridae. 



3. B Grapsini Grapsidae, Gecarcinidae, Ocypodidae. 



Als wesentliche Unterschiede der Decapoden von den nachst- 

 verwandten Euphausiaceen werden angesehen: 1. die scbarfe 

 Dift'erenzierung der Maxillarfiisse von den Pereiopoden, 2. die Ent- 



!) - ; Homaridae Bate. 



-) =: Thelphusidae Dana, da Thelphusa Latr. = Potamon Sav. ist. 



