45g CRUSTACEA. 



smooth, without tubercles or hairs, the left much the larger and 

 black or brownish black above near articulation, while the lower 

 part is white. The legs of the next two pairs have a clear brownish 

 yellow colour, approaching burnt sienna, with a longitudinal line of 

 sepia-brown. (These colours fade in alcohol, the dark part of the 

 hand becoming pale brown or even purplish, and the following legs, 

 an orauge, with a darker longitudinal line.) The peduncles of the 

 eyes are ochre yellow, except the basal half, which is bright blue ; 

 outer antennae, orange; inner, bright blue, tips brownish red; carapax 

 green to olive-green. 



The carapax has a small median point in front; the anterior region 

 is slightly oblong, and is marked like that of the elegans. Posterior 

 region membranous, excepting anterior margin. Peduncles of the 

 eyes longer than the front margin of carapax, more than twice as 

 long as the acicle of the outer antennae, which is quite short ; scale of 

 basal portion subtriangular, acute, the two nearly in contact on the 

 median line. The larger hand is very large, subquadrate, and rounded 

 above ; fingers neatly spoon-excavate. . The tarsus of the following 

 four legs has a few tufts of hairs, and a single brown spot either side, 

 which often meets on the medial line so as to become a single spot ; 

 preceding joints naked, with the exception of a few hairs at lower 

 apex. The male abdomen has four pairs of slender ciliate appen- 

 dages, proceeding from dorsal plates that are nearly or quite mem- 

 branous. 



Cancer tibicen, Herbst, ii. 25, pi. 23, f. 7. 



Pagurus tibicen, Edwards, Crust., ii. 229, and Cuv., Regne An., pi. 44, f. 3. 



Payurus levimanus, Randall, Jour. Acad. Nat. Sci. Philad., viii. 135. 



Calcinus elegans {Edwards), Dana. 



Plate 28, fig. 10a, animal, natural size; b, enlarged view; c, part 

 of larger hand, enlarged. 



Paumotu Archipelago, at the islands Clermont Tonnerre, Carlshoff, 

 and Waterland ; also, Hawaiian Islands ; Wakes Island. 



Length, one and three-fourths inches. This beautiful species is 

 strongly marked in the preserved or dead specimen, by the bands of 



