212 



Records of the Indian Museum. 



[Vol. XXIV, 



scale by the length of the fingers. The carpus is a little longer 

 than the merus, from 7 to 8 times as long as its distal breadth 

 and from i'35 to 1*5 times the length of the chela. The fingers 

 are unarmed and are about as long as the palm. 



The second peraeopods are equal ; as in the forms already des- 

 cribed they are much longer in males than in females and the pro- 

 portions of the segments differ widely in the two sexes. In adult 

 males (text-fig. 59ft) they reach beyond the scale by the entire 

 length of the chela and carpus. The merus is from 1*25 to 1*35 

 times the length of the carpus and is from 6 to 6*5 times as long as 

 wide ; it bears a conspicuous spine at the distal end of the lower 

 margin. The carpus bears a curved, forwardly directed spine on 



Text-fig. 59. — Periclimenes grandis (Stimpson). 

 First peraeopod. c. Second peraeopod of female. 



Second peraeopod of male. d. Third peraeopod. 



the inner side of the distal border and is from 4 to 5 times as long 

 as its greatest breadth, excluding the spine. The chela in well- 

 grown specimens is from 2 to 2*5 times the length of the carpus. 

 The palm is about 4-5 times as long as wide and is from 16 to 

 twice the length of the fingers. The cutting margins of the fingers 

 are excavate in the middle so that an oval gap is left when the claw 

 is closed. In front of this excavation there is a single tooth on 

 each finger, that on the dactylus being in advance of the other. 

 Behind the excavation there is a large tooth on the fixed finger, 

 succeeded by a variable number of smaller teeth and there is a series 

 of medium-sized teeth, usually 4 or 5, on the proximal part of the 

 dactylus. The tips of the fingers are inturned. The excavation in 

 the ringers is to be seen only in very large males ; usually both 



