CANCROIDEA. 



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The specimens from Upolu are closely like Ruppell's figure (Op. 

 cit., 26, pi. 5, f. 6).* The whole surface is rough with short bristles, 

 rather shorter than in Ruppell's figure (projecting above the granules 

 about as much as the diameter of the granules), and the legs have the 

 same hirsute character. The under surface of the body is very short 

 hirsute throughout. The fingers of the hand are striate and scabrous, 

 and also minute hirsute, like the hand. Length of carapax of a 

 female, 615 lines; greatest breadth, 9 lines; ratio of length to 

 breadth, 1 : 1-46. There is no long ciliation to the upper margin of 

 the posterior legs, this margin being short and rough hirsute, like the 

 lateral surface of these legs. Fingers channeled, and inner margin 

 denticulate. The intervals between the areolets are not pubescent. 

 The antero-lateral margin is five-lobed, as observed after removing 

 the hairs, and not before (Plate 8, fig. 3). These lobes are the nor- 

 mal ones, D, E, N, T, S. They are broad and truncate (excepting S), 

 with the margin irregularly denticulate. Between D and E, but on a 

 lower level, there is another small prominence, d' . This description 

 does not agree entirely with that by Milne Edwards (Crust., i. 389) ; 

 but the specimens answer so well to Ruppell's figure and description, 

 that we forbear naming it anew. It has many of the characters of 

 the rufopunctatus of Edwards ; but the postero-lateral margin is very 

 concave, and its proportions are those of Ruppell's figure, instead of 

 being "beaucoup moins ovoide;" and the pterygostomian region is 

 sulcate, very distinctly so, the sulci corresponding to the intervals 

 between the marginal lobes. 



Another smaller specimen from the Sooloo Sea has similar cha- 

 racters. The length of the carapax is but 2*6 lines; and the ratio of 

 length to breadth, is 1 : 1'43. The under side of the body appears 

 smoother, and the outer maxillipeds nearly naked ; but this may be 

 owing to its younger state. The general colour of the carapax is 

 light, yet the short hairs are dark. The specimen resembles much 

 the figure referred to CEgle rugata by Adams and White (Crust. 

 Samarang, pi. 8, f. 5), but the fingers are pointed. 



Genus XANTHUS. 



The groups Xantho, Paraxanthus, Euxanthus, and Xanthodes, are 



* Not pi. 4, fig. 8, as in Milne Edwards's Crust., i. 389. 

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