BY WILLIAM A. HA.SWELL, M.A., B.SC. 1031 



the body proper ; the length and breadth of the segments of the body 

 are nearly equal. The proboscis is as broad as the body behind, 

 conical, coming gradually to a point in front. The abdomen is 

 short, shield-shaped, slightly notched in the middle behind. The 

 first pair of appendages are very large ; more than twice as 

 long as the proboscis, the first joint is thick, a little narrower at 

 the proximal than at the distal end, as long as the proboscis ; the 

 penultimate joint is very large, somewhat longer than broad, 

 laterally compressed ; its digital process is stout, and presents a 

 rounded lobe towards the middle of its inner border ; the last joint 

 (dactyl us) is of a similar form to the digital process of the 

 preceding and has a similar rounded lobe on its inner border. The 

 third pair of appendages have the four basal joints stout, the third 

 and fourth longer than the first and second ; the fifth is as long as 

 the third and fourth together, narrower, curved, and provided with 

 a conical process standing out at right angles at its distal end ; the 

 sixth joint is about a fifth of the length of the fifth ; the following 

 four joints are each ornamented with a small number — half-a-dozen 

 or fewer — of compound setaj ; the seventh and eighth are longer 

 than the ninth and tenth ; the last is succeeded by a long pointed 

 claw. In the following pairs of appendages the basal joint is equa 

 in length to the lateral process ; the second joint is about twice the 

 length of the first, constricted at the proximal end ; the third joint 

 is about the size of the first ; the fourth, fifth and sixth joints are 

 nearly equal, the fifth being the smallest ; each of them presents 

 two constrictions ; the seventh joint is very small, ornamented 

 with a few strong seta? : the eighth joint is rather strongly curved, 

 its palm provided at the base with five or six stout spines, and 

 distally a few small irregular spines ; all the joints are ornamented 

 with minute tubercles. The total length of the body and proboscis 

 is an eighth of an inch ; of one of the posterior appendages three 

 eighths. This species, which I have found in Port Jackson is 

 rather nearly related to P. Iteois of Hoeck, but differs from it 

 strongly in the small number of spines on the third pair of appen- 

 dages, and the presence of the process on the fifth joint, the 

 constrictions on the fourth, fifth and sixth joints of the posterior 

 appendages, etc. 



