554 Scientific Proceedings, Royal Dublin Society. 



at extremity, two-thirds the length of the cephalic segment ; false 

 legs with long claws and non-denticulate spines ; ambulatory legs 

 with the second coxal joint slightly longer than the two others 

 taken together ; femora and tibise, in male, with strong conical pro- 

 jections at their extremities ; legs with numerous long hairs and 

 smooth spines. 



Length of the proboscis, 1*5 mm. ; of the cephalic segment and 

 trunk, 5 mm. ; of the abdomen, 1*5 mm. ; of a false leg (male), 

 5 mm. ; of a false leg (female), 4 mm. ; of an ambulatory leg of 

 the second pair, 18 mm. 



One male and one female specimen were taken by Professor 

 Haddon. 



The body of this species is smooth, slender, and elongated, but 

 not so extremely attenuated as that of P. aicstraliensis. The 

 cephalic segment is about twice as long as a trunk segment ; 

 the neck is short, rapidly widening into the broad frontal part 

 (figs. 1-2). The oculiferous tubercle (fig. 3) is low, with an 

 evenly rounded apex (in P. australiensis it is more prominent, 

 with a pointed apex). The lateral processes are about as long 

 as the width of the body. The caudal segment is as long as a 

 trunk segment, erect and bifid at its extremity. The proboscis is 

 swollen at its base, constricted in the middle, and again swollen at 

 its extremity, which is bluntly conical (PI. xxii., fig. 2.) The 

 chelifori are well-developed, with scape reaching beyond the end 

 of the proboscis, stout rounded palm, and short strong fingers ; all 

 joints armed with spines. The false legs (fig. 4) are very similar in 

 the two sexes ; the fourth joint about once and a half as long as the 

 three first together, it is stout in both sexes and has a central 

 protuberance in the male ; the fifth joint two-thirds as long as the 

 fourth ; the sixth two-thirds as long as the fifth ; the seventh 

 three-fourths as long as the sixth ; the eighth, ninth, and tenth, 

 each slightly shorter than the sixth ; the tenth joint bears a 

 slender claw longer than the joint, with a few very slight serra- 

 tions on its inner edge ; the last four joints bear stout, smooth 

 spines (fig. 5) (in P. australiensis the spines are denticulate on one 

 edge). The ambulatory legs are long, but not so long relatively 

 as in P. australiensis. The second coxal joint is rather more than 

 twice as long as the first or third (in P. australiensis it is three 

 times as long) ; it is armed with a few spines, and swollen distally 



