1922. j S. Kemp : Notes on Crustacea Decapoda. 165 



palm ; each is broadly spatulate with the inner margin finely 

 pectinate throughout. 



The left second leg is missing in the single specimen examined, 

 The right (text-fig. 30c) reaches beyond the antennal scale by less 

 than half the length of the chela. The merus is about 3 times 

 as long as wide and only two-thirds the length of the ischium ; 

 it bears a strong tooth at the distal end of the lower border. 

 The carpus is short and conical, two-thirds the length of the me- 

 rus and about r6 times as long as its distal breadth. The chela 

 is about 3'6 times the length of the carpus; the palm is a little 

 more than 3 times as long as wide. The ringers (text-fig. 30^) are 

 rather more than half the length of the palm and have inturned 

 tips ; the dactylus is unarmed, but there are four small teeth on the 

 fixed finger. There are long sparse hairs on all the segments. 



The three posterior legs (text-fig. 29c) are short and stout; the 

 third reach about to the end of the antennal scale. The merus in this 

 pair is nearly 3^5 times as long as wide and bears a strong tooth 

 at the distal end of its lower border; the propodus is 4*5 times 

 as long as wide and from 5*5 to 6 times as long as the dactylus. 

 The propodus bears spinules on its posterior margin and at the 

 distal end is thickly clad with hairs that partially conceal the 

 dactylus. The dactylus (text-fig. 29^) is small and curved, with 

 the accessory claw found in most species of the subgenus re- 

 placed by a conspicuous rounded lobe. 



The sixth abdominal somite is scarcely longer than the fifth. 

 The anterior of the two pairs of spines on the dorsum of the 

 telson is placed at about the middle of its length, the second pair 

 midway between the first and the apex. 



The single specimen is an ovigerous female about 16 mm. in 

 length. 



P. noverca is closely related to Nobili's P. soror. but is distin- 

 guished, as shown below, by a number of well-marked characters. 



The type and only known example of this species was found 

 at New Caledonia and is the property of the Paris Museum. 



Periclimencs (Periclimenes) soror Nobili. 



1904. Periclimenes soror, Nobili, Bull. Mus. Paris, X, p. 232. 

 1906. Periclimenes soror, Nobili, Ann. Sci. nat., Zool. (9) IV, p. 50, 

 pi. ii. fig. 6. 



This species, which I have not seen, agrees with P. noverca 

 and differs from all other members of the subgenus Periclimenes 

 in possessing a comb of fine teeth on each finger of the first peraeo- 

 pod. According to Nobili's description it differs from the aliied 

 species in the following points : — 



(i) There are 11-13 teeth on the upper margin of the rostrum. 



(ii) The tooth at the outer distal angle of the basal anten- 

 nular segment is short. 



(iii) The first peraeopods are more slender, with carpus 4 

 times as long as its distal breadth. 



