156 CRUSTACEA. 



as the Valparaiso species was first made distinct from the other species 

 by Poeppig, his name is adopted above. 



Cancer irroratus, BELL, Zool. Trans., i. 340, 1835. 

 Cancer pleleius, PcEPPiG, Wiegm. Archiv., 1836, p. 134. 



CANCER PRODUCTUS (Randall). 



Plate 7, fig. 3 a, animal, natural size ; b, under view of head ; c, 

 outer view of hand of right side ; d, abdomen ; e, outline of part of 

 front of a large specimen, natural size ; /, outer maxilliped of same ; 

 /', part of fouette ; g, second pair of maxillipeds ; h, first pair of max- 

 illipeds. 



Puget's Sound, N. W. America, C. Pickering. Exp. Exp. 



Length of carapax, thirteen lines ; greatest breadth, twenty lines ; 

 and ratio of length to breadth, 1 : I 1 54. The carapax is faintly areo- 

 late in part, and has a broad shallow depression either side of the 

 areolet 2 M. The front is slightly arcuate in outline, and is very 

 evenly crenate with five nearly equal low crenatures. The antero- 

 lateral margin has nine teeth, with none posterior to S, though there 

 is a slight emargination ; the transverse line connecting the two pos- 

 terior of the teeth, is twice as far from the front as from the hinder 

 margin of the carapax. The teeth are very even, though low or like 

 lobes, and increase in size rather regularly from the second to the 

 posterior, and at the bottom of the interval, between each there is a 

 short suture marked on the carapax. The postero-lateral margin is 

 concave and short. The hand is cristate ; above, the surface is small 

 tuberculous, externally it is somewhat carinate. The posterior legs 

 are naked excepting the tarsus. The outer maxillipeds have the 

 inner angle of the third joint rounded, with an acute emargination 

 below it. 



The first joint of the outer antennae is thin and oblong, with the 

 sides nearly parallel, and the summit somewhat truncate ; it reaches 

 as far forward as the edge of the front. 



The furrow on the second joint of the outer maxilliped is placed 

 obliquely as in the Cancers, and not parallel to the margin as in most 

 of the Xanthinae, &c. 



