PHYLLOBRANCHIATE CRUSTACEA-MACRUEA. 435 



species (fig. 3) the basal joint bears a sliovt appendage (l)asecpliysis) not reaching to the 

 extremity of the meros. The iscliium is very sliort and almost completely merged into 

 the next joint, the meros. The carpus is about half as long; wh'iU) the terminal joint is 

 again elongated, bearing a few spines on tlie lower margin among tiie numerous hairs, 

 and ending in two very short spines. 



The first pair of pereiopoda have the meros (tig. 1) keeled on tlie upper margin and 

 produced into an acute spine, the lower margin being flattened and Avingcd to partially 

 receive the hand when bent inwards. The hand is about three times as long as broad, 

 and its inferior margin ends in a straight spine ; the palm is very oblique. 



The second pair of pereiopoda are very short and feeble, only about half as long as the 

 succeeding pair ; both fingers of the slender chela; are subequal and fringed with liairs. 



The third pair are long, very slender, and stiliform, and extend beyond the extremity 

 of the flagella of the first antennte. 



The fourth and fifth pairs are strong, witli long aiid acute dactyla. 



The posterior pair of pleopoda (fig. 5) are subequal with the telsou; the outer branch 

 has the outer margin terminating in a short subapical tootii ; the inner is narrower and 

 rather longer. 



The colour is a uniform sandy grey ; occasionally the fifth segment of the pleon 

 is coloured dark brown or has patches of brown coloration on it. 



The following are the dimensions of a large ovigerous female : — 



mm. 



Extreme lengtli 38 



Breadth at second scgnicut of carapace 7 



Lengtli of carapace 1 



o 



„ scajjliocerite of first antcnnrc fi 



„ last segment of pleon ."> 



„ telson 7 



ITahitat. This is a common species on the New Zealand coasts within the 20-fathom 

 line, as the following list of localities shows ; — Dusky Sovuid, Paterson Inlet (Stewart 

 Island), Otago Harbour, Blueskiu Bay, Akaroa, Lyttelton Harbour, and Cook Strait. 

 Also at Napier {Filliol). 



Distribution. Confined to New Zealand. 



2. PONTOPHILUS GRACILIS, Batc. 



1888. Bate, 'Challenger' Macrura, p. 187, pi. 87. 



Hahitat. Off the New Zealand coast, east of Cape Turnagain, in 1100 fathoms. 

 Dtstrihation. Off" Tristan da Cunha, near Torres Straits, and near the riiilippine 

 Islands. 



63* 



