6 Records of the Indian Museum. [Voi,. XVI, 



Mature females bear two egg-sacs each containing 6-8 ova. 



The 1st antenna when folded back reaches to the posterior end 

 of the genital segment of the abdomen. It consists of 21 segments 

 having the following proportional lengths : — 



Segments ^ • ^ • 3 : 4 : 5 : 6 : 7 : 8 : 9 : 10 : 11 : 12 : 13 : 14 : 15 : 16 : 

 65 : 44 : 22 : 31 : 31 : 44 : 22 : 22 : 31 : 51 : 57 : 61 : 63 : 62 : 65 : 57 : 

 17 : 18 : 19 : 20 : 21. 

 48 : 51 : 51 : 57 : 65 = 1000. 



All the antennal setae appear to be bristle-like and devoid of 

 plumose hairs. 



The 2nd antenna is similar to that of P. hickmani. 



The maxillipid consists of two basal joints and an end portion 

 of 5 segments. Basal i bears distally a stout serrated spine ; 

 basal 2 is fringed with a palisade of spines. 



The 1st pair of legs. — Basal i is armed with a transverse row of 

 small spines on its external margin^ and a second row about the 

 junction of the proximal and middle thirds of the segment ; basal 

 2 also bears an oblique row of spines. The exopod and endopod 

 are each of three segments ; exopod i bears a small marginal seta 

 that barely reaches to the distal end of the segment. 



The 2nd and ^^d pair of legs. — Basal i bears a transverse row 

 of spines on the proximal part of the outer margin ; basal 2 bears 

 a longitudinal row of spines on its outer margin. 



The /{th pair of legs. — Both basals are devoid of spines. 



The ^th pair of legs. — Each consists of a three-jointed ramus : 

 the 1st segment bears a row of spines on its outer surface : the 2nd 

 segment is armed at its distal external angle with a single marginal 

 serrated spine, and there is no trace of any internal lamelliforra 

 process such as is found in P. tollingeri and P. lohipes : the 

 3rd segment bears a small marginal spine and three end spines, of 

 which the outer is by far the longest and stoutest and is serrated 

 on both margins. 



cT . Total length = 1*09 mm. 



Proportional length of cephalo-thorax and abdomen- 



67 : 33 = 100. 



The male appears to differ very considerably from the female 

 for the posterior thoracic margin is rounded and is totally devoid 

 of spines, with the single exception of a small spine situated 

 towards the dorsal end of the posterior margin. The abdomen 

 consists of five segments having with the furca the following 

 proportional lengths : — 



II : 22 : 20 : 17 : 9 : 21 = 100. 



The 2nd, 3rd and 4th segments are each armed with a com- 

 plete circle of spines on their distal margins and in addition 

 the 2nd segment also bears a transverse row of small spines on both 

 dorsal and ventral surfaces. The furcal setae are coarsely fringed 

 as in the ? , but the 3rd seta is not expanded : there is a 

 very small dorsal accessory seta. 



