^"l8jr''] PROCEEDINGS OF THE NATIONAL MUSEUM. 65 



H' Second aud third joints of iiuteiiii;c dilated >'(■«/■« 



li" Secoud Jiiid third Joints of iintenu;o not dihited. 



K' (I'iihns elonj-jitcd) : . SoloUquiH 



K" (Pahns rohnst) Rochinia 



D" Pra'ocnhir spini! absi^nt. 



E' iJasal autennal Joint elongated, its distal portion visihlc! from al)(>ve. 



I'dia 

 E" Basal antennal Joint with its distal }>ortion not visible fioin above. 



F' (Spines of rostrnni snbjjaralk'l) Vi^okUja 



F" Spines of rostrum laminate at base, slightly divergent Euri/iiome 



F'" (Spines of rostrum deflexed) ; Micippoidcs 



Hchizophrysiuu.* 



A' (Fingers acute at tips) Tcmuonolus 



A" Fingers excavate at tips. 



IV Spines of rostrum with one or nunc aceessury spines SrhizouhrijH 



B" (Si)iues of rostrum .simple) .^ Cyclax 



MicippiiKi . 



A' Orbits very incomi)let(^, dehned above, o])en l)elnv, . 

 B' Orbits tubular. 



C (Praiocular spiu<^s small) •....CriocarcinuH 



C" (Pra-ocular spines much enlarged) '. . ; Picrocerns 



B" Orbits not tubu lar I'seudomwippa 



A" Orbits luirrowly oval, well defined Micippd 



A'" (Orbits scarcely defined either above or below) iaramicippa 



KEY TO .Sl'ECIi:.S EXAMINKI). 



HeiHiifi. 



Ambulatory legs with the nunnis Joints dilated in winglikc expansions . . .criiitiiVnics 



Hi/as. 



A' Carapace subtriangular; hepatic region not dilated laterally. Ikisal antennal 



Joint subtriangular untncns 



A" Carapace lyrate; laepatic region dilated laterally. Basal antennal Joint with 

 sides nearly parallel. 

 B' Posterior angle of In^patic projection rounded. Basal antennal Joint without a 



large tuberehi at the antero-external angle coarclatun 



B" Posterior angle of hepatic projection subacute. Basal antennal Joint with a. 

 largo tubercle at the antero-external angle hjralus 



('hionwcetes. 



A' Carapace tuberculose ; branchial regions flattened opilio 



A" Carapace -spinose ; branchial regions dilated ianncri 



Herhsiid. 



A' Inferior orbital margin not toothed. Legs not spinose condyliatq 



A" Inferior orbital margin toothed. Legs s])inoso {Ilcrbuliclla) camptavuittlia 



"The genus rhnrophrlcHx, A. Milne Edwards, which Miers places in this divisiou 

 pf the Maiida', is classe<l I)y Ortmaiin among the Corystoidea, 



Proc. N. M. 93 5 



