CANCROIDEA. 159 



ATERGATIS FLORIDUS (RumpMus), De Haan. 

 Plate 7, fig. 4, male, natural size. 



From the Paumotu Archipelago, Society and Friendly Islands, and 

 Feejees, in the Pacific. 



Carapax smooth and shining, faint areolation anteriorly, colour 

 deep green, passing into and covered with a network of white or 

 yellowish white. Crests of joints of legs bluish purple. Hand and 

 carpus same colour as carapax externally, fading below to white; 

 following legs clouded and dotted with umber, excepting the purple 

 crests. Length, one to one and a half inches: one male specimen 

 fourteen and a half lines long, twenty-two lines broad ; ratio of length 

 to breadth, 1 : 1'51. The antero-lateral margin is thin, and is faintly 

 divided by very minute emarginations into three lobes. Crest of 

 hand entire, outer surface nearly smooth or faintly reticulated. Eight 

 posterior legs naked, excepting a small tuft on fifth joint near middle 

 of lower margin, and tarsus pubescent. 



Cancer floriilus, RuMPHIUS, Amb., pi. 8, f. 5. 

 Atergatis floridus, DE HAAN, Faun. Japon., 46. 

 Cancer ocyroef HERBST, iii., pi. 54, f. 2. 



GENUS CARPILIUS, Leach. 



The smooth and nearly terete legs, the four-lobed front, the smooth 

 carapax, and antero-lateral longer than postero-lateral margin, with 

 something of an angle between, give the Carpilii a peculiar look. 

 The group would hardly admit of division, even if the furcate cha- 

 racter of the inner branch of the first pair of maxillipeds should fade 

 out in some species. We should rather conclude that this character is 

 not as important as supposed. 



CARPILIUS CONVEXUS. 

 Plate 7, fig. 5 a, animal, natural size ; b, abdomen. 



