CANCROIDEA. 233 



Carapax transverse, the antero-lateral margin shorter than the pos- 

 tero-lateral. First joint of outer antennae not reaching to the front, 

 as in Pseudocarcinus. Praalabial area divided throughout by a ridge, 

 as in Ozius. Fingers pointed. 



The species have the outer antennas of Pseudocarcinus, and the 

 praelabial area of Ozius. The following, here described, have a de- 

 pressed or nearly flat back, and smooth surface. 



PSEUDOZIUS PLANUS. 



Carapax latus, Icevis, fere planus, non areolatus, antice prope marginem 

 leviter impressus ; fronte fere recto, paulo emarginato; margine antcro- 

 laterali paulo acuio,fere integro, levissime 4-?o5afo, margine postero- 

 laterali recto. Pedes antici paulo incequi, Iceves et nudi, carpo non 

 rugato, manu supra rotundatd, digitis sat longis, non canaliculatis, 

 digito mobili prope basin armato cum dente crasso obliquo. Pedes 

 posticifere nudi, tarso hirsuto. 



Carapax broad, smooth, nearly flat, not areolate, anteriorly near front 

 margin somewhat impressed ; front nearly straight, a little emar- 

 ginate ; antero-lateral margin somewhat acute, nearly entire, very 

 faintly four-lobed ; postero-lateral margin straight. Anterior feet a 

 little unequal, smooth, and naked, carpus not rugate, hand rounded 

 above, fingers rather long, not channeled, moveable finger having 

 a large stout basal tooth. Posterior feet nearly naked, tarsus 

 hirsute. 



Plate 13, fig. 6 a, male, enlarged one and a half diameters ; b, front 

 view of front, showing outer antennse ; c, outer maxilliped ; d, fingers 

 of hand, one and a half diameters ; e, f, male and female abdomens, 

 one and a half diameters; g, tarsus of second pair of legs, in another 

 specimen ; h, palate and adjoining parts, enlarged. 



Waterland Island, Raraka Island, and elsewhere, Paumotu Archi- 

 pelago ; also Wakes Island, North Pacific. 



Length of carapax, in one specimen, 4'3 lines; breadth, 7'1 lines; 



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