( 138 ) 



with and just outside of the inner border is quite smooth : the palm is longer 

 than broad, but hardly as long as the dactylus ; its upper border is spinose, 

 and there are several longitudinal rows of spinules in the lower half of its 

 outer surface, but the upper half is smooth : the cutting edges of the fingers 

 are corneous in almost half their extent. 



The 2nd and 3rd legs are stout and surpass the larger cheliped by about 

 half the length of their dactyli : the upper surface of their joints is trans- 

 versely rugulose: the dactyli are stout, curved, and at least as long as the 

 two preceding joints combined. 



In the female the anterior ramus of the first three abdominal appendages 

 is slender and of remarkable length. 



Colours in spirit: the thoracic appendages and the calcified part of the 

 carapace are of the dull chalk-white colour seen in Munidopsis. 

 Length of carapace about 20 millim. 



l^. Off Colombo, 142—400 fath. ] 



10 I , 



on9Q Q I "Investigator." 



/uz»— a . Qjf Travancore coast, 360 fath. 

 10 -* 



C0EN0BITID/I2, Dana. 



CoenobitidcB, Dana, U. S. Expl. Exp., Crust., pt. I., 1852, pp. 432, 435; Stsmpson, Proc. Ac. 

 Nat. Sci. Philad, (1858) 1859, p. 232 : Haswell, Cat. Austral. Crust., 1882, p. 159 : Henderson, 

 Challenger Anomura, 1888, p. 49 : Stebbing, Hist. Crust., 1893, p. 155 : Ortmann, in Bronn's 

 Thier Reich, Malaeostraca, 1900, p. 1146: Young, Stalk-eyed Crust. W. Indies, p. 357. 



Carapace well calcified ; either elongate, or greatly broadened in its 

 posterior half. Rostrum either almost obsolete, or very prominent and com- 

 pletely concealing the ophthalmic somite. Thoracic sterna broad behind the 

 chelipeds. 



Abdomen either soft and spirally coiled in adaptation to a mollusk shell, 

 or broad, symmetrical, dorsaliy well-calcified, and simply flexed. 



Ophthalmic scales present. The antennular peduncle is of great length, 

 the first joint deflexed and stout, the other two joints slender and cylindrical ; 

 the fiagella compressed and truncated at tip. Antennal peduncle compressed, 

 the acicle inconspicuous. 



External maxillipeds approximated at base, the flagellum of the exopodite, 

 as also of that of the 2nd maxillipeds, very much reduced. 



Chelipeds massive, the left larger than the right. Legs of the 2nd and 

 3rd pairs elongate, those of the 4th and 5th pairs reduced, the 4th pair being 

 cheliform or subcheliform, the 5th pair cheliform. 



