ATTSTBALIAIT MALACOSTBACA. 253 



Gnathopoda unequal, second pair much the larger. Pereiopoda 

 slender, subequal. Posterior pair of pleopoda biramous, sub- 

 foliaceous. Telson double. [& B.~] 



445. Mcera Ramsayi. A.M. 



Melita ? Ramsayi, Haswell, 1. c, p. 265, pi. x, fig, 1. 

 Mcera Mamsayi, Haswell, 1. c, p. 332. 



Posterior border of the three first segments of the pleon armed 

 with small serrations and short hairs ; fourth and fifth segments 

 with an acute mesial tooth and a few hairs. Superior antennse 

 as long as the cephalon and pereion ; first two segments of the 

 peduncle elongate, second longer than the first ; third segment 

 very short ; flagellum rather shorter than the peduncle ; 

 appendage seven-jointed. Inferior antennae with the peduncle 

 equal in length to that of the superior pair ; first segment the 

 shorter, second the longest ; flagellum about equal in length to 

 the last segment of the peduncle. Anterior gnathopoda with 

 the carpus and propodos subequal, hairy ; the latter broad ; 

 palm oblique, armed with a few short denticles. Posterior 

 gnathopoda unequal ; right the largest, its carpus closely applied 

 to the propodos ; propodos more than thrice as long as that of 

 the anterior pair, oblong, slightly longer distally than proximally, 

 its length equal to nearly twice its least breadth ; palm nearly 

 transverse, defined by a strong, pointed, slightly curved tooth, 

 and armed with three other large compressed teeth ; left with 

 the propodos about two-thirds of the length of that of the right, 

 of similar shape, but having the palm rather more oblique, 

 slightly convex, minutely crenulated, armed with a single small 

 defining tooth. Three posterior pairs of pereiopoda serrated 

 and hairy, rather shorter than the fourth and fifth. Posterior 

 pleopoda wanting. Telson with each division armed terminally 

 with a sharp tooth and a few long hairs. Length 5 lines. 



Port Jackson (dredged.) 



The posterior gnathopoda of this species are sometimes devoid 

 of teeth, and have the palm very oblique, so that the limbs 

 resemble closely the corresponding appendages in M. rubro- 

 maculata, from which, however, the present species is always 

 distinguished by having a prominent, acute, mesiai spine on the 

 fourth and fifth segments of the pleon. 



