64 (^i;ai!s of family maiid.i: — K'AiMinrN. 



A'" Ciir.ip.icc siilioltloii-;. Ivoslniin vfilicillN <ir iicail.v Milically di'llcxcd, usually 

 luiiad, l;iuu'll;it<'. I'iiincis iifut(^ ;il lips. iSasal aiilfiiiial JoiiU, xcry unu-li vn- 

 largcd. Eye pcdunck's K>iig, goiiiciilalcd. and latciallv \nt>]vi-tii\g.. MUijtpiuiV 



KKY TO CiHNKKA. 



A' Kostruni vertically c(iiu]>rosscu aiul bitid or uoiclutl at (ho cxtreuiity. Orbits 

 slialldvV and very (>]nu above; eyes when retraetcd visiblo iVom above; eye 

 pcdnueles short and thick. 

 H Ambulatory lej^s cxtrenudy long and slender. 



C (Orbits with two lissures above and below ) F.inrUi 



0" (Orbits with one tissure above and below 1 ChoriUliinia 



H Ambulatory legs of moderate ]enj;tli. 

 C Ambulatory logs with thenierus jointsdilated in winglike expansions.. llcnniK 



C" Ambulatory legs conii)re8sed and llattened ( 'hioiiucciis 



C" Ambulatory legs subeylindrieal. 



])' Seeoiul joint of antenna dilated ////rt» 



D" Second Joint of antenna slender, subeylindrieal. 



E' Kt)strum with lateral margins involuted Cahx'cnis 



E" Ixostrum with lateral margins not involuted Ihihuliii 



A' Rostrum eomjiosed of two more or less distinct divergent sjtiues. Ihbits dcei>; 

 eyes when retracted, conceah>d; eyes small; eye ])eduui'les slender. 

 B Orbits large, directed forward, usually very incomplete below ; upiter margin 

 usually ])romiiient, with two deep tissures and long spines. 



C Flagellum of antenna arising within the orbital cavity Main 



C" Flagellum of antenna arising within the orbital nuirgin, and separated from 

 the cavity of the orbit by a narrow i>rocess of the basal joint. 

 D' Carai)aee pyriform. 



E' (Rostral spines short ) rhucodvs* 



E" ( Ivostral sjiines long) Ojilopisa 



D" ('arajiace subtriangular. 



E' Merusjoint i)f outer maxillipi'ds uotclied for the insertion of the next 

 joint, 



F' Ambulatory legs spinosc Cliloriuoidts 



V" Ambulatory legs umirmed raraiiiillirax 



E" (Merus join t of outer n^ax ill iix'ds with anterior margin cut irt>)./<'(i"//(()/)/iry8 

 15" Orbits small, directed outward. Orbital niaigiu not prominent, with oue or 

 two hiatuses above and one beU)w. 

 C First ambulatory logs very long. 



1> Spines of rostrum with an accessory spinule near the extremity Xaxia 



D Spines of rostrum without an accessi>ry spinule. 

 E' Hasal antennal joint narrow, with or without a spine at the autero- 



cxternal angle Hiiaslvntis 



E" (l>as;il antennal joint dilated and unarmed externally, unidentate ])oste- 



riorly and in the middle) Ltiiidoiuuia 



C" First ambulatory legs of moderate length. 

 D' I'ru'ocular spine* present. 



E' Rostral spines ]»arallel or in lontact to near their extremities I'isa 



E" Rostral spiiu's divergi>nl. 



V Chelipeds much snialler than the ambulat(uy legs I.eptivcti 



F" Chelipeds as large as the ambulatory legs 



(•' Ambulatory legs armed with spines XibiUa 



G" Ambulatory legs unarmed. 



'There is some donld as to the propter position of this genus. 



