THE DEC APOD A 



315 



Sub-Tribk 1. Bkachyhhvncha. 



Body not narrowed in front ; rostrum reduced or wanting ; orbits well 

 formed. 



Fiiniilv CoRYSTiDAK . Corystex, Latreille. Family Portuxidae . 

 Sub-Family Carcimnai!;. C'arciniis, Leach (Carcinides, Rathbun). Sub- 

 Family PoRTUMNiNAE. Portumnus, Leach. Sub-Family Catoptrinae. 

 Catoptruii, A. Milne-Edwards. Siib-Family Carupinak. Carupa, Dana. 

 Sub-Family Portunixae. Portiinua, Fabricius. Sub-Family Caphyrinae. 

 Caphyra, Guerin. Sub-Family Thalamitinae. Thalamita, Latreilh-. 

 Sub-Family Podophthalmixae. Podophtltabntui, Lamarck. Family 

 PoTAMoxiDAE, Sub-Fumily Deckeniixae. Deckenia, Hilgendorf.^ Sub- 

 Family PsKri)()THKi.PHrs[\-AF . Pscudothelphusa, Saussure. Sub-Family 

 Potamoxinae. Potamon, a&vigny (= TJielphusa, Latreille). Sub-Family 

 Trichodactyi.ixae. Trichod((ctylus, Latreille. Family Atf:lecyct.idak 

 Sub-Family Acaxthocyclixae. Acanthocydus, Milne-Edwards and Lucas. 

 Sub-Family Thiinae. Thia, Leach. Sub-Family Atklecyclixae. Atele- 

 cyclus, H. Milne-Edwards. Family Caxcridae . Sub-Family Cancrinae. 

 Cancer, Linnaeus. Sub-Family Pirimelixae. Pirime.la, Leach. Family 

 Xaxthidae . Sub-Family Xanthixae. Xantho, Leach. Sub-Family 

 Carpiliixae. Carpilius, Leach. Sub-Family Etisinae. Etisus, H. 

 Milne-Edwards. Sub-Family ]\Iexippixae. Menippe, de Haan. Sub- 

 Family OziiXAE. Ozim, H. Milne-Edwards. Sub-Family Eriphiinae. 

 Eriphia, Latreille. Sub-Family Trapeziixae. Trapezia, Latreille. 

 Family Goxoplacidae . Sub-Family Rhizopixae. Ehi::(ypa, Stimpson. 

 Sub-J^amily Prioxoplacixae. Prionoplax, H. Milne-Edwards. Sub- 

 Family GoxoPLACiXAE. Gonoplax, Leach. Sub-Family Carcixoplacinae. 

 Carcinoplax, H. ^lilne-Edwards. Sub-Family Hexapodixae. Hexapus, 

 de Haan. Family Pixxotheridak . Sub-Family Pixxotherixae. Pinno- 

 there!^, Latreille. Sub-Family Pixxothereliixae. Pinnotherelia, Milne- 

 Edwards and Lucas. Sub-Family Xexophthalmixae. Xenophthahnus, 

 White. Sub-Family AsTHENOCiXATHiXAE. Asihenorjnathm, Stimpson. 

 Faniily Ptexoplacid.u.^ Ptenopilax, Alcock and Anderson. Family 

 Palicidae. Palicus, PlTH^pi {=CymopoIia, Roux). Family Grapsidae. 

 Sub-Family Plagusiixae. Plagusia, Latreille. Sub- Faniily Sesar- 

 MiXAE. Sesarma, Say. Sub-Family Grapsixae. Grapsiis, Lamarck ; 

 rianes, Bowdich (= Nautilo(jrapsiis, H. Milne-Edwards). Sub-Family 

 A'aruxinae. Varmia, H. iMilne-Edwards. Family Gecarcixidae. 

 Gecarcinus, Leach ; Cardisoma, Latreille. Family Ocypodidae . Sub- 

 Family ]\Iacrophthat,mixae. Macrophthalmas, Latreille. Sub-Family 

 OCYPODIXAE. Ocypoda, Fabricius (Fig. 155, p. 264); Gcladmus, Latreille. 

 Sub-Family Myctirixae. Mtidiris, Lativille. Family Hapal(K'ar- 

 cixiDAE. Hapalocarcinns, Stimpson. 



Sup-Tribe 2. Oxyrhyxcha. 



Body narrowed in front ; rostrum usually distinct ; orbits generally 

 incomplete. 



