REPORT OX THE BRACHYURA. 289 



112. Plagusia depressa ( Fabric /us). 

 Spanish Wells. Bahamas. 



113. Leiolophus plantssimus (Herbst). 

 Egg Island. Bahamas. 



CALAPPID.E. 



114. Caeappa flammea ( Herbs! 1. 

 Tortugas . 



Calappa sulcata sp. nov. PI. ix. Figs. 3 and j. 



Teeth of posterior margin produced : mantis with a smooth 

 sulcus . 



This species is closely related to C. flammea (Herbst). 

 The two specimens collected by the •• Albatross'" are not 

 mature, but I have compared them with specimens of flam- 

 mea equally small. The proportions of the carapace are 

 similar to those of flammea; so also are the larger tubercles 

 which ornament the longitudinal elevations, the smaller inter- 

 vening tubercles are, however, much flatter and less conspicu- 

 ous than in flammea. The posterior two-fifths of the carapace 

 is very finely granulate, the granules barely visible to the 

 naked eye. while in flammea they are always evident. The 

 most striking difference in the carapace of the two species is 

 the great length and slenderness of the median pair of teeth 

 of the posterior border and also the spiniform teeth at the 

 postero-lateral angle. In flammea there is a small tooth just 

 outside the median pair; this tooth is absent in sulcata. The 

 margin of the orbit is subentire; in flammea. incised with 

 tuberculiform teeth. 



The chelipeds differ as follows from those of flammea. 

 Above the inferior margin of the palm (Fig. 4 ) there is an 

 oblique row of four or more large granulated tubercles; above 

 this row there is a broad and deep sulcus having a smooth 

 surface, and continued in a direction subparallel to the distal 

 margin of the palm. In -flammea. the area above the inferior 

 margin is granulate and has one or two small tubercles; above 

 iv — ^ 2 A 



