28o 



Memoirs of the Indian Museum. 



[Voi,. V, 



branches) extends beyond the apex of the antennal scale by two-thirds of its length 

 in the male, by a little less in the female. 



The antennal scale (text-fig. 2jb) is about three and three quarter times as long 

 as broad in large females, about four and a half times as long as broad in males. 

 The outer margin is nearly straight in the female, a little concave in the male, and 

 terminates in a spine which reaches to, or a trifle beyond, the apex of the lamella ; 

 the apical portion of the latter is not strongly narrowed as in P. ensirostris (Dana). 



The mandible is without palp. The molar process is trilobed terminally and the 

 incisor process ends in three sharp teeth. 



The outer maxillipedes reach to the end of the antennal peduncle. The ante- 



Fig. 27. — Periclimenes demani, sp. nov. 



a. Antennule. 



b. Antennal scale of male. 



c. First peraeopod. 



d. Second peraeopod of male from L. Chilka. 



e. Second peraeopod of female from L. Chilka. 



/. Second peraeopod of female from Madras. 



g. Fifth peraeopod. 



A Dactylus of fifth peraeopod. 



i. Apex of telson. 



penultimate segment is exceeded in length by the exopod and its outer margin is as -a 

 rule bare, without spinules or setae. The ultimate segment is about three quarters 

 the length of the penultimate. 



The first peraeopods (text-fig. 27c) reach a trifle beyond the antennal scale. The 

 carpus is about one-fifth longer than the merus and nearly twice the length of the chela. 

 The palm is a little shorter than the fingers and bears on its inner face numerous setae 

 arranged in transverse rows. The fingers also bear a few tufts of setae on their mar- 

 gins and are without teeth on the cutting edge. 



The second peraeopods (text-figs. 27^, e, f) are equal. In the female they extend 

 beyond the apex of the antennal scale by the length of the chela, or, in very large 



