37 



Carapace sub-cylindrical, longer than broad ; the regions hardly indicated, 

 though the branchial groove is fairly plain. 



Front triangular, deflexed, dorsally concave ; its apex is in close contact 

 with that of the epistome, and is surmounted by a horizontal spine similar to the 

 larger spines of the surface of the carapace. Supraorbital borders tumid. 



Antennal flagellum nearly as long as the carapace. 



Chelipeds equal, a little longer and stouter than the first three pair of legs, 

 and not much longer than the carapace. The fingers are short and stout, and 

 meet throughout their extent. 



The last pair of legs are slender rudiments, hardly longer than the basal 

 joints of the other legs. 



Colours in spirit, milk-white ; eyes deeply pigmented. 



In the single small male the length of the carapace is 5 millim., the greatest 

 breadth a little over 4 millim. 



^ , r Andaman Sea. "1 _. , , 



(Type of the spec.es). | ^^^^ ^g, ^^, ^_ ^3, g, ^_j. .0 fathoms. '• Investigator. 



Family DkomiidJ'; ■■^.r. 



Ccomuiie (partim), Dana, U. S. Expl. Exp. Crnst , pt. ii., p. 1428: Henderson, Challenger Anomnra, p. 2 : 

 Ortmann in Bronn's Thier Reich, Malacostraca, p. 1154. 



Dromiime (partim), Milne Edwards and Bouvier, Crast. Decap. Hirondelle et Princesse Alice, Monaco, 1899 

 p. 9. 



Dromiidie, Alcock, J. A. S. B., LXVIIL, pt. 2, 1899, p. 128. 



Carapace variable, sometimes as long as or even a little longer than broad, 

 sometimes slightly broader than long; generally strongly convex in both direc- 

 tions, sometimes flat ; commonly ovoid or subcircular, occasionally pentagonal : 

 the lateral borders well defined in most of their extent. 



Front usually cut into 3 teeth, the middle one of which is always on a much 

 lower plane than the others and is often of insignificant size or even absent : the 

 front is rarely triangular, \vithout lateral teeth. Antennal flagella shorter than 

 the carapace. 



External maxillipeds typically opercular, completely closing the buccal cavern. 



Chelipeds equal, generally much stouter than the legs. 



First two i^air of legs generally stout, not much shorter than the chelipeds. 



Last two pair of legs, subdorsal and prehensile, generally much reduced in 

 length and slender. There is a tendency for the fourth (last) pair to be a little 

 longer than the third pair, and occasionally the fourth pair are as long as either 

 of the first two pair. 



The abdomen in both sexes consists of 7 segments, and there is a pair of 

 lateral platelets intercalated between the last two segments. 



