AUSTEALIAN MALACOSTRACA. 241 



the carpus broad, with a slight angular projection on its posterior 

 border, to which are attached a number of long hairs ; propodos 

 nearly equal in length to the carpus, narrow ; dactylos small. 

 Third pair with its coxa extending forward nearly to the anterior 

 boundary of the fourth segment ; basos broader at its distal than 

 at its proximal end ; meros produced posteriorly, broader than 

 long, armed behind with five large, triangular teeth ; carpus as 

 long as the meros, but narrower, armed behind with four triangular 

 teeth ; propodos rather louger than the carpus, about half as 

 broad ; dactylos almost straight, acute ; all the segments except 

 the first and last fringed with long hairs. Fourth pair longer 

 than the third, hairy ; basos broadly ovate ; meros very large, 

 twice as broad as long, with seven teeth on its posterior border ; 

 carpus as long as the merus,not quite so broad, narrowing distally ; 

 propodos long, narrow. Fifth pair much smaller than the other ; 

 basos expanded posteriorly, the posterior border finely serrated ; 

 meros and carpus sub-equal, not expanded ; propodos equal in 

 length to the carpus, but narrower ; dactylos straight, acute. 

 Rami of posterior pleopoda lanceolate, serrated on the edges. 

 Halves of telson ovate, armed with a few hairs on the outer side 

 and a terminal spine. Length f in. 

 Bondi, New South Wales. 



Genus Lphimedia, Rathke. 



Cephalon produced and anteriorly depressed. Pereion dis- 

 tended. Pleon compressed. Eyes two. Antenna? simple, sub- 

 equal. Oral appendages projecting anteriorly. Mandibles having 

 an appendage. Maxillipedes not unguiculate. First pair of gnatho- 

 poda feeble, having the dactylos rudimentary, subapical ; second 

 also feeble, subchelate. Coxae gradually increasing in depth to 

 the second pair of pereiopoda, which, together with the preceding, 

 are produced inferiorly to an angle. Coxa? of the third pair of 

 pereiopoda not half as deep as the second. Pereiopoda having 

 the dactylos strong and curved. Posterior pair of pleopoda 

 biramous, clean. Telson single, squamiform, emarginate. 



430. Iphimedia ? ambigua. A.M. 



Ipliimedia ambigua, Haswell, 1. c, p. 327, pi. xxiv., fig. 2. 



Cephalon with a long, pointed rostrum. First segment of the 

 pereion broad ; the second to the sixth, inclusive, very narrow, 



P 



