370 DE. W. T. CALMA^" OX NEW OR EAEE 



two-tliirds longer than the telson, slightly thickened distally, where the diameter is 

 about one-third of the length. The exopod is about five-sixths as long as the 

 peduncle ; it bears two unequal stout seta3 at the tip and two or three, more slender, 

 on the inner edge, while the outer edge is clothed with very fine setae. The endopod 

 is about four-fifths as long as the exopod and is composed of two segments, the distal 

 less than one-half as long as the proximal ; it has a long terminal spine and four 

 spines, each with a secondary seta, on the inner edge. 



In the immature female there is no marked interval between the second and third 

 pairs of legs. 



Adult 2Iale.— Total length 2-85 mm. 



In general form the male resembles an immature female so closely as to be readily 

 mistaken for one. It diff"ers in having the ridges on the carapace somewhat more 

 marked and especially in having strong paired dorso-lateral ridges on all tlie free 

 thoracic somites instead of only on the last two. The pseudorostrum is narrowly 

 truncated at the tip. The antero-lateral angle is rounded and obscurely serrated, and 

 projects laterally so as to be visible from above. 



The antennules have the outer flagellum composed of three segments. 



The antennse are very short, wholly concealed, in the natural position, by the 

 carapace ; the flagellum is composed of only eight segments and hardly exceeds in 

 length the last segment of the peduncle, but its segments are well-defined and bear 

 long sensory filaments. 



'J'he third maxilliped has an exopod which, in the adult male, is well-formed and 

 carries long set;r, but in immature specimens is imperfectly segmented and has only 

 rudimentary sette at the tip. 



The first legs are shorter than in the adult female, especially as regards the carpus, 

 which is much less than twice as long as the two preceding segments together. 



The third pair of legs have the basis stouter than in the female, expanding inwards 

 just above the base so as to form a projecting shoulder. The setae on the distal 

 segments of this and the succeeding pairs of legs are stouter than in the female. 



The uropods difi"er from those of the female in the fact that the rami are nearly 

 equal in length and that the endopod has its proximal segment but little longer 

 than the distal ; the inner edge of the endopod has five spines including the 

 subterminal one. 



^Remarks. — In addition to the characters whicli have been mentioned in the generic 

 definition and in the key to the species, attention may be called to the peculiar tuft of 

 long setae on the propodus of the first legs and to the reduction of the antennal 

 flagellum in the male. 



Occurrence.— '' Lyttleton Harbour, 1-5 fathoms, 8/97, H. Suter Coll." Copenhagen 

 Museum. Co-types in British Museum. 



