Muniia //-o//; Xeic Zealand . 3 



times the greatest breadth. Head not broader tlian tlie fir.st 

 segment of pereion, deeply notched on each side for the bases 

 of the antennjE, produced anteriorly between the antennae ; 

 front margin straight, with rounded upper lip attached. The 

 lateral ])ortion behind the insertion of the antennai with the 

 anterior angle somewhat acute, the posterior angle rounded, 

 somewhat produced, and bearing the moderately-sized eyes. 

 First four segments of the pereion subequal in length, grad- 

 ually increasing in width up to the fourth, which is the 

 widest; next three segments subequal and slightly shorter 

 than the preceding, curving slightly backwards at the sides. 

 All the segments having the lateral margins straight or 

 slightly rounded. Pleon as long as the four preceding 

 segments of the thorax, pear-shaped, narrowing posteriorly, 

 extremity rounded. 



Antennules with the first two joints stout, others slender, 

 reaching a little beyond the end of the third joint of the 

 antennae. Antennas considerably longer than the body. 

 First ])air of legs very large and strong and of peculiar shape, 

 the ischios being very thick and strong and hollowed ante- 

 riorly to receive the distal part of the limb when bent back ; 

 carpus expanding distally, mallet-shaped at the end ; pro- 

 podos small and rounded. Succeeding legs of usual shape, 

 the last three pairs longer than the others, about as long as 

 the body. 



Female with the body of the same shape as in the male ; 

 differs from the male in the first pair of appendages of the 

 pereion, which are short and imperfectly subchelate ; carpus 

 broader than the propodos, having the inner edge armed with 

 six strong spiniform setge. 



Colour brownish, more or less closely covered with darker 

 dots and stellate markings. 



Length of body of largest specimens about 3 raillim. 



Hah. Port Chalmers and Brighton, New Zealand, between 

 tide-marks. 



Remarks. — In the shape of the body and in the fact that 

 the male and the female have the body of the same form, this 

 species appears to resemble M. maculata, Beddard, but the 

 form of the iirst pair of legs is evidently very different; it 

 also differs in the antennules and in other points. It seems 

 to be quite different from M. pallida, Beddard. 



Detailed Description. 



The head (PI. I. figs. 1 and 3) is broad, about twice as 

 broad as long, and longer than the two succeeding segments 



1* 



