1922.] 



W. M. Tattersai.l : Indian Mysidacea. 



467 



(1) There are three nodules in the median dorsal line of the 

 carapace, two in the same positions as in M. gibbosa, the third one 

 in front of the cervical groove. These nodules are present in both 

 sexes though less marked in the male than in the female. 



(2) The frontal plate is more developed than in M. gibbosa, 



Text-fig. 12. — Mysidopsis indica, sp. nov. 



a, antennular peduncle of male ; b, antenna! scale ; c, first pleopod of the 

 male ; d, fourth pleopod of the male ; e, telson and uropods. All X 65. 



more broadly triangular, longer and completely covering the basal 

 joints of the eye-stalks. 



(3) The antennal scale is two and a half times as long as 

 broad, being thus broader than in M . gibbosa. It outreaches the 

 antennular peduncle but not to the same extent as in M. gibbosa. 



(4) Telson shorter than in M. gibbosa, not much more than 

 half as long as the uropods, and hardly longer than wide at the base. 



