460 Trmisactions. 



margin of lateral lobes, which reach nearly to the cervical groove. 

 No lateral tooth behind the eyes. Abdomen with 1st segment 

 narrow, the 6th segment the longest, the 1st the shortest, the 

 others subequal. Lateral margins of the segments mostly free 

 from setae but with some on the 3rd, 4th, and 5th segments. 

 Dorsal surface smooth. 



Imier antennae with the flagella shorter than the last joint 

 of the peduncle. Outer antennae about as long as the abdomen, 

 the peduncle a little longer than the peduncle of inner antennae. 



Chelipeds subequal, merus about as long as the propod, its 

 lower margin bearing 5 or 6 small teeth on the proximal 

 portion ; carpus about half as long as merus, triangular, lower 

 surface produced distally into a sharp tooth ; propod fairly 

 broad, with outer surface smooth, lower margin with a row 

 of small teeth, the fixed finger somewhat stout and in- 

 curved, arising at some little distance from the distal end of 

 the propod and scarcely projecting beyond it, some long hairs 

 on the upper margin of propod, on the upper part of the inner 

 surface and along the lower margin ; dactyl slender, more 

 than half as long as the propod, and covered with dense rows 

 of long hairs. 



Telson broader than long, its posterior margin rounded and 

 fringed with setae. Both branches of uropods longer than the 

 telson, the outer longer and broader than the inner, which is 

 subtriangular in outline ; the posterior margins of both fringed 

 with setae ; both branches with a median ridge, a small tooth 

 on the base of this ridge on the outer branch, and another small 

 tooth on the basal joint just over the proximal end of the ridge 

 of the inner joint. 



Length of specimens examined, about 25 mm. Dana gives 

 the length of his specimen as " nearly 2 in." 



Hah. — Bay of Islands {Dana) ; Auckland Harbour {Suter) ; 

 Plimmerton {H. B. KirJc) ; Stewart Island (coll., Canterbury 

 Museum). 



Remarks. — The history of this species has already been given 

 along with that of the preceding species. Judging from the 

 specimens I have seen, it is much smaller than that species, and 

 may be readily distinguished from it by the trilobed front and 

 by the characters of the chelipeds. 



In my specimens (sex uncertain) there are no pleopods on 

 the 1st segment of abdomen; the 2nd, 3rd, 4th, and 5th seg- 

 ments bear pleopods of the usual type. 



In his description, as quoted by Miers, Dana says, " Caixdal 

 segment not broader than long " ; but in the two specimens that 

 I have been able to examine closely it is appreciably though 

 not greatly broader. 



