( 51 ) 



Antennal acicle stout, non-setose, just overlapping the base of the terminal 

 joint of the peduncle : flagellum about as long as the carapace. 



Chelipeds subequal, or the left very slightly larger, a little longer than the 

 carapace, the wrist and hand sparsely beset with long silky, but stiff, set^e : 

 the outer and under surfaces of the merus are studded with vesiculous 

 granules : the exposed (extensor) surface of the wrist, hand and fingers is 

 thickly studded with stout, discrete, conical spinules, which extend also 

 on to the inflated under surface of the palm, and are not enlarged along the 

 inner border of any of the joints. Similar conical spinules beset the upper 

 surface of the three terminal joints of the and pair of legs, but on the 3rd 

 pair are represented by granules and pocks. 



The 2nd, 3rd and 4th pairs of legs are sparsely beset with long, stiff, silky- 

 looking setae : in the male the and pair are about a dactylus, and the 3rd pair 

 about half a dactylus, longer than the chelipeds : in both pairs the dactylus, 

 though it looks shorter, is equal in length to the subcylindrical propodite. 



In the female both rami of the 4th abdominal appendage (appendage of 

 5th somite) are nearly equally well developed. 



Colours in spirit : anterior part of carapace, eyestalks and antennary 

 peduncles pink, mottled : chelipeds and next three pairs of legs bright red, 

 each with three broad white cross-bands involving the articulations of the 

 four terminal joints : finger-tips and claws of dactyli of and and 3rd legs 

 black with white base : the red ground of the chelipeds and legs profusely 

 but minutely spotted with yellow. 



Length of carapace 12 millim. 



Inhabits broad-mouthed shells of Tritonidea delicata, in one case encrusted 

 with a worm-tube. 



i^21z^ Off C. Comorin, 102 fath. " Investigator." 



10 



Calcinus, Dana. 



Cnlcinus, Dana, U. S. Expl. Exp., Crust., pt. I., 1852, p. 456; Stimpson, Proc. Acad. Sci. 

 Philad. (1858) 1859, p. 234 : Haswell, Cat. Austral. Crust., 1882, p. 158: Henderson, Challenger 

 Anomura, 1888, p. 61 : Chevreux et Bouvier, Mem. Soc. Zool. France, .1892, p. 126 : Ortmann 

 in Bronn's Thier Reich, Malacostraca, p. 1146. Young, Stalk-eyed Crust. Br. Guiana, etc., 

 1900, p. 361. 



Carapace elongate, broadened posteriorly, its anterior part very firmly 

 calcified, but its posterior part — even sometimes the cardiac region — flaccid. 

 Rostrum small but very distinct. 



